./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/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_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/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_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/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 f2dab74649212a3ffb00bb2114fde15cc6c5343aaff8c111997aa1541045c9bd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:06:15,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:06:15,964 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:06:15,970 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:06:15,971 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:06:16,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:06:16,013 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:06:16,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:06:16,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:06:16,023 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:06:16,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:06:16,024 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:06:16,025 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:06:16,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:06:16,027 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:06:16,027 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:06:16,027 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:06:16,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:06:16,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:06:16,029 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:06:16,029 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:06:16,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:06:16,030 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:06:16,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:06:16,031 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:06:16,031 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:06:16,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:06:16,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:06:16,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:16,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:06:16,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:06:16,034 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:06:16,034 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:06:16,035 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:06:16,035 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:06:16,035 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:06:16,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:06:16,036 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:06:16,036 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:06:16,036 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_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f2dab74649212a3ffb00bb2114fde15cc6c5343aaff8c111997aa1541045c9bd [2023-11-19 08:06:16,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:06:16,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:06:16,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:06:16,365 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:06:16,365 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:06:16,367 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i [2023-11-19 08:06:19,556 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:06:19,765 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:06:19,766 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i [2023-11-19 08:06:19,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/data/1866cfc33/31716c25684247a3aa479612ed5e8c9e/FLAG0b728e065 [2023-11-19 08:06:19,805 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/data/1866cfc33/31716c25684247a3aa479612ed5e8c9e [2023-11-19 08:06:19,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:06:19,809 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:06:19,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:19,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:06:19,817 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:06:19,818 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:19" (1/1) ... [2023-11-19 08:06:19,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5871dc88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:19, skipping insertion in model container [2023-11-19 08:06:19,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:06:19" (1/1) ... [2023-11-19 08:06:19,865 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:06:20,034 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_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i[916,929] [2023-11-19 08:06:20,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:20,134 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:06:20,147 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_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-85.i[916,929] [2023-11-19 08:06:20,203 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:06:20,236 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:06:20,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20 WrapperNode [2023-11-19 08:06:20,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:06:20,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:20,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:06:20,237 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:06:20,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,326 INFO L138 Inliner]: procedures = 26, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 457 [2023-11-19 08:06:20,326 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:06:20,327 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:06:20,327 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:06:20,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:06:20,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,340 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,350 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,405 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,415 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:06:20,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:06:20,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:06:20,444 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:06:20,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (1/1) ... [2023-11-19 08:06:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:06:20,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:20,524 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:06:20,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:06:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:06:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 08:06:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 08:06:20,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:06:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:06:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:06:20,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:06:20,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:06:20,761 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:06:20,765 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:06:21,383 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:06:21,404 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:06:21,404 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:06:21,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:21 BoogieIcfgContainer [2023-11-19 08:06:21,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:06:21,418 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:06:21,418 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:06:21,422 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:06:21,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:06:19" (1/3) ... [2023-11-19 08:06:21,423 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417266be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:21, skipping insertion in model container [2023-11-19 08:06:21,424 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:06:20" (2/3) ... [2023-11-19 08:06:21,425 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@417266be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:06:21, skipping insertion in model container [2023-11-19 08:06:21,425 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:06:21" (3/3) ... [2023-11-19 08:06:21,427 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-85.i [2023-11-19 08:06:21,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:06:21,454 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:06:21,520 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:06:21,528 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;@64d3a05c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:06:21,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:06:21,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 08:06:21,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:06:21,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:21,553 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:21,554 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:21,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash 809731980, now seen corresponding path program 1 times [2023-11-19 08:06:21,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415832429] [2023-11-19 08:06:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:21,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:21,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415832429] [2023-11-19 08:06:21,899 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:06:21,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068129085] [2023-11-19 08:06:21,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:21,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:21,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:21,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:21,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:06:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:22,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:06:22,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:22,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-19 08:06:22,360 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:22,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068129085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:22,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:22,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:06:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945291894] [2023-11-19 08:06:22,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:22,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:06:22,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:22,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:06:22,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:22,432 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:06:22,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:22,508 INFO L93 Difference]: Finished difference Result 255 states and 399 transitions. [2023-11-19 08:06:22,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:06:22,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2023-11-19 08:06:22,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:22,526 INFO L225 Difference]: With dead ends: 255 [2023-11-19 08:06:22,526 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 08:06:22,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:06:22,544 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:22,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:22,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 08:06:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-19 08:06:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 08:06:22,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2023-11-19 08:06:22,643 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 179 [2023-11-19 08:06:22,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:22,644 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2023-11-19 08:06:22,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:06:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2023-11-19 08:06:22,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:06:22,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:22,657 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:22,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:22,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:06:22,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:22,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:22,871 INFO L85 PathProgramCache]: Analyzing trace with hash 949240606, now seen corresponding path program 1 times [2023-11-19 08:06:22,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:22,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46656784] [2023-11-19 08:06:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:22,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:23,046 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:23,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22600914] [2023-11-19 08:06:23,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:23,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:23,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:23,056 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:23,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:06:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:23,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 08:06:23,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:24,967 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 13 treesize of output 9 [2023-11-19 08:06:25,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:25,052 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 18 treesize of output 13 [2023-11-19 08:06:25,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:25,112 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 18 treesize of output 13 [2023-11-19 08:06:25,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:25,137 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 18 treesize of output 13 [2023-11-19 08:06:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:25,192 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 18 treesize of output 13 [2023-11-19 08:06:25,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:25,240 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 21 treesize of output 20 [2023-11-19 08:06:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-19 08:06:25,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:25,507 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_142 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_142)) (.cse2 (+ |c_~#unsigned_char_Array_0~0.offset| 1))) (let ((.cse0 (mod (select (select .cse1 |c_~#unsigned_char_Array_0~0.base|) .cse2) 256))) (= .cse0 (mod (select (select (store .cse1 |c_~#signed_long_int_Array_0~0.base| (store (select .cse1 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| (+ .cse0 (- 4)))) |c_~#unsigned_char_Array_0~0.base|) .cse2) 256))))) is different from false [2023-11-19 08:06:25,536 WARN L854 $PredicateComparison]: unable to prove that (forall ((|~#signed_long_int_Array_0~0.offset| Int) (v_ArrVal_142 (Array Int Int)) (v_ArrVal_141 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_141) |c_~#BOOL_unsigned_char_Array_0~0.base| v_ArrVal_142)) (.cse2 (+ |c_~#unsigned_char_Array_0~0.offset| 1))) (let ((.cse1 (mod (select (select .cse0 |c_~#unsigned_char_Array_0~0.base|) .cse2) 256))) (= (mod (select (select (store .cse0 |c_~#signed_long_int_Array_0~0.base| (store (select .cse0 |c_~#signed_long_int_Array_0~0.base|) |~#signed_long_int_Array_0~0.offset| (+ (- 4) .cse1))) |c_~#unsigned_char_Array_0~0.base|) .cse2) 256) .cse1)))) is different from false [2023-11-19 08:06:25,696 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:25,697 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 72 [2023-11-19 08:06:25,807 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 08:06:25,809 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 97768 treesize of output 94410 [2023-11-19 08:06:26,015 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 714 treesize of output 666 [2023-11-19 08:06:26,066 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 712 treesize of output 664 [2023-11-19 08:06:26,095 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 730 treesize of output 634 [2023-11-19 08:06:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:26,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46656784] [2023-11-19 08:06:26,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:26,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22600914] [2023-11-19 08:06:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22600914] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:26,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2023-11-19 08:06:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036253156] [2023-11-19 08:06:26,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:26,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:26,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:26,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=246, Unknown=2, NotChecked=66, Total=380 [2023-11-19 08:06:26,989 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:27,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:27,842 INFO L93 Difference]: Finished difference Result 333 states and 484 transitions. [2023-11-19 08:06:27,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:27,843 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-19 08:06:27,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:27,846 INFO L225 Difference]: With dead ends: 333 [2023-11-19 08:06:27,846 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 08:06:27,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 338 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=444, Unknown=2, NotChecked=90, Total=650 [2023-11-19 08:06:27,849 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 400 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 593 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:27,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 669 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 333 Invalid, 0 Unknown, 593 Unchecked, 0.5s Time] [2023-11-19 08:06:27,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 08:06:27,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 133. [2023-11-19 08:06:27,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 08:06:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2023-11-19 08:06:27,868 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 179 [2023-11-19 08:06:27,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:27,870 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2023-11-19 08:06:27,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:27,871 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2023-11-19 08:06:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:06:27,874 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:27,874 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:27,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:28,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 08:06:28,098 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:28,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:28,099 INFO L85 PathProgramCache]: Analyzing trace with hash -71827748, now seen corresponding path program 1 times [2023-11-19 08:06:28,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:28,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048572483] [2023-11-19 08:06:28,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:28,162 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:28,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984684895] [2023-11-19 08:06:28,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:28,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:28,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:28,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:28,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:06:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:28,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-19 08:06:28,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:29,247 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 13 treesize of output 9 [2023-11-19 08:06:29,312 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 48 treesize of output 34 [2023-11-19 08:06:29,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 60 [2023-11-19 08:06:29,333 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:29,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 25 treesize of output 25 [2023-11-19 08:06:29,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:29,389 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 48 treesize of output 37 [2023-11-19 08:06:29,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:29,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 52 [2023-11-19 08:06:29,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:29,632 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 75 treesize of output 58 [2023-11-19 08:06:29,713 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:29,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 22 [2023-11-19 08:06:29,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:29,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:29,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:29,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048572483] [2023-11-19 08:06:29,730 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:29,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984684895] [2023-11-19 08:06:29,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984684895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:29,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:29,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:06:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644146486] [2023-11-19 08:06:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:29,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:06:29,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:29,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:06:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:06:29,739 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:31,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:31,534 INFO L93 Difference]: Finished difference Result 506 states and 732 transitions. [2023-11-19 08:06:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:06:31,535 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-19 08:06:31,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:31,540 INFO L225 Difference]: With dead ends: 506 [2023-11-19 08:06:31,540 INFO L226 Difference]: Without dead ends: 376 [2023-11-19 08:06:31,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:06:31,542 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 998 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 947 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 1107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:31,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 798 Invalid, 1107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 947 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-19 08:06:31,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2023-11-19 08:06:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 302. [2023-11-19 08:06:31,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 255 states have (on average 1.3568627450980393) internal successors, (346), 257 states have internal predecessors, (346), 43 states have call successors, (43), 3 states have call predecessors, (43), 3 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2023-11-19 08:06:31,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 432 transitions. [2023-11-19 08:06:31,604 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 432 transitions. Word has length 179 [2023-11-19 08:06:31,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:31,605 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 432 transitions. [2023-11-19 08:06:31,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:31,606 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 432 transitions. [2023-11-19 08:06:31,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:06:31,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:31,612 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:31,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:31,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:31,826 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:31,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:31,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1271131125, now seen corresponding path program 1 times [2023-11-19 08:06:31,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:31,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779942867] [2023-11-19 08:06:31,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:31,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:31,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:31,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [276388582] [2023-11-19 08:06:31,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:31,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:31,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:31,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:31,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:06:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:32,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 08:06:32,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:32,435 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 08:06:32,604 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 08:06:32,801 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 08:06:32,971 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 08:06:33,183 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 15 treesize of output 1 [2023-11-19 08:06:33,353 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 08:06:33,521 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 08:06:33,707 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 08:06:33,897 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 08:06:34,080 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 08:06:34,378 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 08:06:34,441 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 35 treesize of output 22 [2023-11-19 08:06:34,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2023-11-19 08:06:34,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 [2023-11-19 08:06:34,542 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 50 treesize of output 34 [2023-11-19 08:06:34,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 52 [2023-11-19 08:06:34,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 25 treesize of output 25 [2023-11-19 08:06:34,650 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 56 treesize of output 41 [2023-11-19 08:06:34,752 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 63 treesize of output 52 [2023-11-19 08:06:34,980 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 76 treesize of output 55 [2023-11-19 08:06:35,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 35 [2023-11-19 08:06:35,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-19 08:06:35,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:35,118 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_302 (Array Int Int))) (< (mod (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 1)) is different from false [2023-11-19 08:06:35,247 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300))) (let ((.cse2 (select .cse1 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse0 (select .cse2 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)))) (or (< 0 (mod .cse0 256)) (< (mod (let ((.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (select (select (store (store .cse1 |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse3 .cse0)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3)) 256) 1)))))) is different from false [2023-11-19 08:06:35,286 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse5 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse2 (select .cse0 .cse3))) (or (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 .cse2)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1) (< 0 (mod .cse2 256)))))) (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse6 (select .cse7 .cse3))) (or (< 0 (mod .cse6 256)) (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse7 .cse1 .cse6)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1))))))) is different from false [2023-11-19 08:06:35,421 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse13 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse14 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (let ((.cse4 (store .cse13 .cse14 0)) (.cse1 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse8 (store .cse13 .cse14 1)) (.cse5 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse2 (select .cse0 .cse3))) (or (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 .cse2)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1) (< 0 (mod .cse2 256)))))) (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse7 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse6 (select .cse7 .cse3))) (or (< 0 (mod .cse6 256)) (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse7 .cse1 .cse6)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1))))) (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse10 (select .cse9 .cse3))) (or (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse9 .cse1 .cse10)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1) (< 0 (mod .cse10 256)))))) (forall ((v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse11 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse8 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse12 (select .cse11 .cse3))) (or (< (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse11 .cse1 .cse12)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256) 1) (< 0 (mod .cse12 256))))))))) is different from false [2023-11-19 08:06:35,659 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse6 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_297 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_297))) (let ((.cse1 (select (store (store .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 1) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse3 (select .cse1 .cse4))) (or (< (mod (select (select (store (store (store .cse0 |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse1 .cse2 .cse3)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2) 256) 1) (< 0 (mod .cse3 256))))))) (forall ((v_ArrVal_297 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_297))) (let ((.cse9 (select (store (store .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 0) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse7 (select .cse9 .cse4))) (or (< 0 (mod .cse7 256)) (< (mod (select (select (store (store (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse9 .cse2 .cse7)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2) 256) 1)))))) (forall ((v_ArrVal_297 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse11 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_297))) (let ((.cse12 (select (store (store .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse11 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 0) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse10 (select .cse12 .cse4))) (or (< 0 (mod .cse10 256)) (< (mod (select (select (store (store (store .cse11 |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse12 .cse2 .cse10)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2) 256) 1)))))) (forall ((v_ArrVal_297 (Array Int Int)) (v_ArrVal_300 (Array Int Int)) (v_ArrVal_302 (Array Int Int))) (let ((.cse13 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_297))) (let ((.cse14 (select (store (store .cse13 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store (select .cse13 |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5 1) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse15 (select .cse14 .cse4))) (or (< (mod (select (select (store (store (store .cse13 |c_~#signed_char_Array_0~0.base| v_ArrVal_300) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse14 .cse2 .cse15)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_302) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse2) 256) 1) (< 0 (mod .cse15 256))))))))) is different from false [2023-11-19 08:06:35,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779942867] [2023-11-19 08:06:35,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:35,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276388582] [2023-11-19 08:06:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276388582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:35,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 08:06:35,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765010488] [2023-11-19 08:06:35,920 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:06:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:06:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=211, Unknown=5, NotChecked=170, Total=462 [2023-11-19 08:06:35,923 INFO L87 Difference]: Start difference. First operand 302 states and 432 transitions. Second operand has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:06:37,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:37,610 INFO L93 Difference]: Finished difference Result 902 states and 1294 transitions. [2023-11-19 08:06:37,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:37,611 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2023-11-19 08:06:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:37,618 INFO L225 Difference]: With dead ends: 902 [2023-11-19 08:06:37,618 INFO L226 Difference]: Without dead ends: 603 [2023-11-19 08:06:37,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=178, Invalid=389, Unknown=5, NotChecked=240, Total=812 [2023-11-19 08:06:37,621 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 979 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:37,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 668 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:06:37,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2023-11-19 08:06:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 367. [2023-11-19 08:06:37,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 317 states have (on average 1.362776025236593) internal successors, (432), 320 states have internal predecessors, (432), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-19 08:06:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 522 transitions. [2023-11-19 08:06:37,669 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 522 transitions. Word has length 179 [2023-11-19 08:06:37,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:37,670 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 522 transitions. [2023-11-19 08:06:37,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.384615384615385) internal successors, (70), 12 states have internal predecessors, (70), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:06:37,670 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 522 transitions. [2023-11-19 08:06:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 08:06:37,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:37,674 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:37,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:37,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:37,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:37,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -49195494, now seen corresponding path program 1 times [2023-11-19 08:06:37,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:37,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178702134] [2023-11-19 08:06:37,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:37,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:37,940 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:37,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389313544] [2023-11-19 08:06:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:37,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:37,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:37,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:06:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:38,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 08:06:38,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:38,174 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:38,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178702134] [2023-11-19 08:06:38,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:38,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389313544] [2023-11-19 08:06:38,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389313544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:38,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:06:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238133946] [2023-11-19 08:06:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:38,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:06:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:06:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:06:38,178 INFO L87 Difference]: Start difference. First operand 367 states and 522 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:38,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:38,235 INFO L93 Difference]: Finished difference Result 734 states and 1045 transitions. [2023-11-19 08:06:38,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:06:38,236 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-19 08:06:38,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:38,240 INFO L225 Difference]: With dead ends: 734 [2023-11-19 08:06:38,240 INFO L226 Difference]: Without dead ends: 370 [2023-11-19 08:06:38,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 176 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 08:06:38,242 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 3 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 535 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 08:06:38,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 535 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:38,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-19 08:06:38,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2023-11-19 08:06:38,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 319 states have (on average 1.3605015673981191) internal successors, (434), 322 states have internal predecessors, (434), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-19 08:06:38,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 524 transitions. [2023-11-19 08:06:38,284 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 524 transitions. Word has length 179 [2023-11-19 08:06:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:38,285 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 524 transitions. [2023-11-19 08:06:38,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:38,285 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 524 transitions. [2023-11-19 08:06:38,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-11-19 08:06:38,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:38,289 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:38,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:38,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:38,511 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:38,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:38,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1630099825, now seen corresponding path program 1 times [2023-11-19 08:06:38,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:38,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103020907] [2023-11-19 08:06:38,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:38,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:38,578 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691500918] [2023-11-19 08:06:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:38,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:38,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:38,580 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:38,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:06:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:38,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-19 08:06:38,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:39,201 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 25 treesize of output 13 [2023-11-19 08:06:39,376 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 25 treesize of output 13 [2023-11-19 08:06:39,566 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 25 treesize of output 13 [2023-11-19 08:06:39,752 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 25 treesize of output 13 [2023-11-19 08:06:39,932 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 25 treesize of output 13 [2023-11-19 08:06:40,121 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 18 treesize of output 13 [2023-11-19 08:06:40,330 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 18 treesize of output 13 [2023-11-19 08:06:40,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:40,491 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 18 treesize of output 13 [2023-11-19 08:06:40,636 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 18 treesize of output 13 [2023-11-19 08:06:40,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:40,831 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 35 treesize of output 23 [2023-11-19 08:06:40,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 165 proven. 532 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2023-11-19 08:06:40,856 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:40,870 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_450 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_450) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 5 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-19 08:06:40,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103020907] [2023-11-19 08:06:40,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:40,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691500918] [2023-11-19 08:06:40,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691500918] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:40,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:40,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 08:06:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309607380] [2023-11-19 08:06:40,892 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:40,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:40,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:40,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:40,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=67, Unknown=1, NotChecked=16, Total=110 [2023-11-19 08:06:40,895 INFO L87 Difference]: Start difference. First operand 369 states and 524 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:41,674 INFO L93 Difference]: Finished difference Result 759 states and 1069 transitions. [2023-11-19 08:06:41,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:06:41,675 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 180 [2023-11-19 08:06:41,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:41,679 INFO L225 Difference]: With dead ends: 759 [2023-11-19 08:06:41,679 INFO L226 Difference]: Without dead ends: 393 [2023-11-19 08:06:41,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=173, Unknown=1, NotChecked=28, Total=272 [2023-11-19 08:06:41,681 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 210 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:41,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 410 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:06:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-11-19 08:06:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 380. [2023-11-19 08:06:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 326 states have (on average 1.3496932515337423) internal successors, (440), 330 states have internal predecessors, (440), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 534 transitions. [2023-11-19 08:06:41,725 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 534 transitions. Word has length 180 [2023-11-19 08:06:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:41,726 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 534 transitions. [2023-11-19 08:06:41,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 534 transitions. [2023-11-19 08:06:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 08:06:41,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:41,730 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:41,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:41,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:41,952 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:41,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:41,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1328749556, now seen corresponding path program 1 times [2023-11-19 08:06:41,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:41,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831960872] [2023-11-19 08:06:41,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:41,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:42,006 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:42,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1168848311] [2023-11-19 08:06:42,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:42,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:42,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:42,008 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:42,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:06:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:42,235 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:06:42,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:42,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:42,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831960872] [2023-11-19 08:06:42,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168848311] [2023-11-19 08:06:42,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168848311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:42,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:42,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:06:42,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895544145] [2023-11-19 08:06:42,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:42,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:06:42,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:42,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:06:42,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:06:42,269 INFO L87 Difference]: Start difference. First operand 380 states and 534 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:42,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:42,351 INFO L93 Difference]: Finished difference Result 756 states and 1063 transitions. [2023-11-19 08:06:42,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:06:42,352 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 08:06:42,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:42,355 INFO L225 Difference]: With dead ends: 756 [2023-11-19 08:06:42,356 INFO L226 Difference]: Without dead ends: 384 [2023-11-19 08:06:42,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:06:42,358 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 6 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:42,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 707 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:06:42,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-11-19 08:06:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2023-11-19 08:06:42,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 329 states have (on average 1.3465045592705167) internal successors, (443), 333 states have internal predecessors, (443), 47 states have call successors, (47), 6 states have call predecessors, (47), 6 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:42,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 537 transitions. [2023-11-19 08:06:42,413 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 537 transitions. Word has length 181 [2023-11-19 08:06:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 537 transitions. [2023-11-19 08:06:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 537 transitions. [2023-11-19 08:06:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 08:06:42,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:42,419 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:42,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:42,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:42,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:42,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1256362998, now seen corresponding path program 1 times [2023-11-19 08:06:42,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:42,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223281179] [2023-11-19 08:06:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:42,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:42,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:42,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [72999559] [2023-11-19 08:06:42,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:42,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:42,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:42,690 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:42,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:06:42,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:42,951 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:06:42,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:43,831 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 39 treesize of output 26 [2023-11-19 08:06:43,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-11-19 08:06:43,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-11-19 08:06:43,901 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 58 treesize of output 42 [2023-11-19 08:06:43,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 64 [2023-11-19 08:06:43,919 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:43,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 33 treesize of output 29 [2023-11-19 08:06:43,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:43,982 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 68 treesize of output 53 [2023-11-19 08:06:44,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:44,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 60 [2023-11-19 08:06:44,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:44,258 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 95 treesize of output 74 [2023-11-19 08:06:44,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:44,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 22 [2023-11-19 08:06:44,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:44,349 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:44,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223281179] [2023-11-19 08:06:44,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:44,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72999559] [2023-11-19 08:06:44,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72999559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:44,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:44,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:06:44,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883582979] [2023-11-19 08:06:44,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:44,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:44,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:44,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:44,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:06:44,353 INFO L87 Difference]: Start difference. First operand 383 states and 537 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:45,422 INFO L93 Difference]: Finished difference Result 858 states and 1197 transitions. [2023-11-19 08:06:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:45,423 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 08:06:45,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:45,427 INFO L225 Difference]: With dead ends: 858 [2023-11-19 08:06:45,427 INFO L226 Difference]: Without dead ends: 483 [2023-11-19 08:06:45,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:06:45,429 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 921 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:45,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [921 Valid, 520 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 08:06:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2023-11-19 08:06:45,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 387. [2023-11-19 08:06:45,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 332 states have (on average 1.3403614457831325) internal successors, (445), 336 states have internal predecessors, (445), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:45,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 539 transitions. [2023-11-19 08:06:45,480 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 539 transitions. Word has length 181 [2023-11-19 08:06:45,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:45,481 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 539 transitions. [2023-11-19 08:06:45,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:45,481 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 539 transitions. [2023-11-19 08:06:45,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 08:06:45,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:45,484 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:45,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:45,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:45,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 588487610, now seen corresponding path program 1 times [2023-11-19 08:06:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:45,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607038828] [2023-11-19 08:06:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:45,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:45,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203744269] [2023-11-19 08:06:45,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:45,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:45,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:45,736 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:45,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:06:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:45,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:06:45,967 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:46,765 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 39 treesize of output 26 [2023-11-19 08:06:46,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-11-19 08:06:46,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 9 [2023-11-19 08:06:46,838 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 58 treesize of output 42 [2023-11-19 08:06:46,842 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 64 [2023-11-19 08:06:46,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:46,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 33 treesize of output 29 [2023-11-19 08:06:46,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:46,915 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 68 treesize of output 53 [2023-11-19 08:06:46,991 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:46,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 79 treesize of output 60 [2023-11-19 08:06:47,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:47,157 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 94 treesize of output 73 [2023-11-19 08:06:47,237 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:47,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 22 [2023-11-19 08:06:47,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:47,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:06:47,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607038828] [2023-11-19 08:06:47,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:47,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203744269] [2023-11-19 08:06:47,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203744269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:06:47,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:06:47,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:06:47,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944552579] [2023-11-19 08:06:47,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:47,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:06:47,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:47,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:06:47,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:06:47,265 INFO L87 Difference]: Start difference. First operand 387 states and 539 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:48,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:48,272 INFO L93 Difference]: Finished difference Result 821 states and 1141 transitions. [2023-11-19 08:06:48,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:06:48,273 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 08:06:48,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:48,278 INFO L225 Difference]: With dead ends: 821 [2023-11-19 08:06:48,278 INFO L226 Difference]: Without dead ends: 442 [2023-11-19 08:06:48,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-19 08:06:48,283 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 442 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:48,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 524 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:06:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2023-11-19 08:06:48,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 388. [2023-11-19 08:06:48,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 333 states have (on average 1.3393393393393394) internal successors, (446), 337 states have internal predecessors, (446), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:48,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 540 transitions. [2023-11-19 08:06:48,342 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 540 transitions. Word has length 181 [2023-11-19 08:06:48,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:48,343 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 540 transitions. [2023-11-19 08:06:48,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:48,343 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 540 transitions. [2023-11-19 08:06:48,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 08:06:48,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:48,346 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:48,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:48,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:48,562 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:48,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:48,562 INFO L85 PathProgramCache]: Analyzing trace with hash -432580744, now seen corresponding path program 1 times [2023-11-19 08:06:48,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565329549] [2023-11-19 08:06:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:48,613 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:48,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333020733] [2023-11-19 08:06:48,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:48,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:48,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:48,622 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:48,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:06:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:48,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 08:06:48,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:49,965 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 13 treesize of output 9 [2023-11-19 08:06:50,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:50,053 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 18 treesize of output 13 [2023-11-19 08:06:50,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:50,120 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 18 treesize of output 13 [2023-11-19 08:06:50,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:50,137 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 18 treesize of output 13 [2023-11-19 08:06:50,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:50,169 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 18 treesize of output 13 [2023-11-19 08:06:50,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:50,211 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 21 treesize of output 20 [2023-11-19 08:06:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-19 08:06:50,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:50,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:06:50,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565329549] [2023-11-19 08:06:50,424 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:50,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333020733] [2023-11-19 08:06:50,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333020733] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:50,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:50,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-19 08:06:50,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080922968] [2023-11-19 08:06:50,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:06:50,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:06:50,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:50,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:06:50,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:06:50,429 INFO L87 Difference]: Start difference. First operand 388 states and 540 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:50,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:50,897 INFO L93 Difference]: Finished difference Result 935 states and 1312 transitions. [2023-11-19 08:06:50,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:06:50,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 08:06:50,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:50,902 INFO L225 Difference]: With dead ends: 935 [2023-11-19 08:06:50,903 INFO L226 Difference]: Without dead ends: 555 [2023-11-19 08:06:50,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-19 08:06:50,905 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 181 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:50,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 992 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:06:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2023-11-19 08:06:50,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 391. [2023-11-19 08:06:50,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 336 states have (on average 1.3422619047619047) internal successors, (451), 340 states have internal predecessors, (451), 47 states have call successors, (47), 7 states have call predecessors, (47), 7 states have return successors, (47), 43 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-19 08:06:50,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 545 transitions. [2023-11-19 08:06:50,952 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 545 transitions. Word has length 181 [2023-11-19 08:06:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:50,952 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 545 transitions. [2023-11-19 08:06:50,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:06:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 545 transitions. [2023-11-19 08:06:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 08:06:50,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:50,955 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:50,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:51,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:06:51,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:51,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1863476235, now seen corresponding path program 1 times [2023-11-19 08:06:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:51,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179988703] [2023-11-19 08:06:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:51,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:51,214 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:51,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1833369541] [2023-11-19 08:06:51,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:51,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:51,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:51,217 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:51,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:06:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:51,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 08:06:51,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:51,654 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 08:06:51,800 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 31 treesize of output 15 [2023-11-19 08:06:51,928 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 31 treesize of output 15 [2023-11-19 08:06:52,068 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 31 treesize of output 15 [2023-11-19 08:06:52,218 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 31 treesize of output 15 [2023-11-19 08:06:52,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:52,403 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 20 treesize of output 15 [2023-11-19 08:06:52,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:52,556 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 20 treesize of output 15 [2023-11-19 08:06:52,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:52,675 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 20 treesize of output 15 [2023-11-19 08:06:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:52,793 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 20 treesize of output 15 [2023-11-19 08:06:52,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:52,965 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 20 treesize of output 15 [2023-11-19 08:06:52,989 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 41 treesize of output 23 [2023-11-19 08:06:53,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 225 proven. 526 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2023-11-19 08:06:53,007 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:53,038 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_820 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_820) |c_~#BOOL_unsigned_char_Array_0~0.base|) (+ 2 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) 256) 0)) is different from false [2023-11-19 08:06:53,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:53,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179988703] [2023-11-19 08:06:53,058 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:53,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833369541] [2023-11-19 08:06:53,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833369541] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:53,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:53,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-11-19 08:06:53,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136238622] [2023-11-19 08:06:53,059 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:53,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 08:06:53,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:53,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 08:06:53,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=98, Unknown=1, NotChecked=20, Total=156 [2023-11-19 08:06:53,061 INFO L87 Difference]: Start difference. First operand 391 states and 545 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:53,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:53,849 INFO L93 Difference]: Finished difference Result 808 states and 1113 transitions. [2023-11-19 08:06:53,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:06:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 182 [2023-11-19 08:06:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:53,856 INFO L225 Difference]: With dead ends: 808 [2023-11-19 08:06:53,856 INFO L226 Difference]: Without dead ends: 425 [2023-11-19 08:06:53,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=218, Unknown=1, NotChecked=32, Total=342 [2023-11-19 08:06:53,858 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 270 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:53,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 366 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 08:06:53,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2023-11-19 08:06:53,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 404. [2023-11-19 08:06:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 344 states have (on average 1.3313953488372092) internal successors, (458), 348 states have internal predecessors, (458), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 45 states have call predecessors, (49), 49 states have call successors, (49) [2023-11-19 08:06:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 556 transitions. [2023-11-19 08:06:53,913 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 556 transitions. Word has length 182 [2023-11-19 08:06:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:53,914 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 556 transitions. [2023-11-19 08:06:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:53,915 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 556 transitions. [2023-11-19 08:06:53,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 08:06:53,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:53,918 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:53,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:06:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 08:06:54,138 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:54,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 187507763, now seen corresponding path program 1 times [2023-11-19 08:06:54,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:54,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752469289] [2023-11-19 08:06:54,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:54,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:54,173 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:54,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853578686] [2023-11-19 08:06:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:54,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:54,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:54,175 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:54,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:06:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:54,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 08:06:54,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:54,873 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 31 treesize of output 15 [2023-11-19 08:06:55,048 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 31 treesize of output 15 [2023-11-19 08:06:55,181 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 31 treesize of output 15 [2023-11-19 08:06:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:55,309 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 20 treesize of output 15 [2023-11-19 08:06:55,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:55,436 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 20 treesize of output 15 [2023-11-19 08:06:55,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:55,552 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 20 treesize of output 15 [2023-11-19 08:06:55,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:55,654 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 20 treesize of output 15 [2023-11-19 08:06:55,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:55,804 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 20 treesize of output 15 [2023-11-19 08:06:55,830 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 41 treesize of output 23 [2023-11-19 08:06:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 253 proven. 520 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-19 08:06:55,861 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:55,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:06:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752469289] [2023-11-19 08:06:55,930 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:06:55,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853578686] [2023-11-19 08:06:55,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853578686] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:06:55,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:06:55,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 08:06:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846852332] [2023-11-19 08:06:55,931 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:06:55,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:06:55,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:06:55,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:06:55,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=163, Unknown=3, NotChecked=0, Total=210 [2023-11-19 08:06:55,933 INFO L87 Difference]: Start difference. First operand 404 states and 556 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:56,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:06:56,895 INFO L93 Difference]: Finished difference Result 644 states and 877 transitions. [2023-11-19 08:06:56,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:06:56,896 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 182 [2023-11-19 08:06:56,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:06:56,898 INFO L225 Difference]: With dead ends: 644 [2023-11-19 08:06:56,899 INFO L226 Difference]: Without dead ends: 256 [2023-11-19 08:06:56,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=374, Unknown=3, NotChecked=0, Total=506 [2023-11-19 08:06:56,901 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 202 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 08:06:56,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 547 Invalid, 967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 08:06:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-19 08:06:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 231. [2023-11-19 08:06:56,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 194 states have (on average 1.3144329896907216) internal successors, (255), 196 states have internal predecessors, (255), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 08:06:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 313 transitions. [2023-11-19 08:06:56,934 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 313 transitions. Word has length 182 [2023-11-19 08:06:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:06:56,934 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 313 transitions. [2023-11-19 08:06:56,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 5 states have call successors, (23), 4 states have call predecessors, (23), 5 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2023-11-19 08:06:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 313 transitions. [2023-11-19 08:06:56,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 08:06:56,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:06:56,937 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:06:56,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-19 08:06:57,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:57,152 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:06:57,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:06:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash -453851236, now seen corresponding path program 1 times [2023-11-19 08:06:57,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:06:57,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878150251] [2023-11-19 08:06:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:06:57,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:06:57,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990664676] [2023-11-19 08:06:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:06:57,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:06:57,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:06:57,193 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:06:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:06:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:06:57,451 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 08:06:57,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:06:57,615 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 08:06:57,732 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 08:06:57,876 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 08:06:57,982 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 08:06:58,088 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 19 treesize of output 1 [2023-11-19 08:06:58,190 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 08:06:58,304 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 08:06:58,407 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 08:06:58,531 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 08:06:58,667 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 08:06:58,852 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 08:06:58,943 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 64 treesize of output 48 [2023-11-19 08:06:58,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 70 [2023-11-19 08:06:58,966 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:58,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 26 treesize of output 26 [2023-11-19 08:06:59,088 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 79 treesize of output 59 [2023-11-19 08:06:59,095 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:59,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 87 [2023-11-19 08:06:59,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 49 [2023-11-19 08:06:59,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:59,204 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 110 treesize of output 87 [2023-11-19 08:06:59,376 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:06:59,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 84 [2023-11-19 08:06:59,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:06:59,701 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 84 treesize of output 65 [2023-11-19 08:06:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-11-19 08:06:59,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:06:59,963 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982))) (let ((.cse0 (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= (mod (select .cse0 .cse1) 256) 0) (< 0 (mod (select (select (store (store .cse2 |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) .cse3)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256)) (< 0 (mod .cse3 256))))))) is different from false [2023-11-19 08:07:00,020 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse3 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse4 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse5 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse2 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse1 .cse2)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3) 256)) (= (mod (select .cse0 .cse3) 256) 0) (< 0 (mod .cse2 256)))))) (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse7 (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= (mod (select .cse6 .cse3) 256) 0) (< 0 (mod .cse7 256)) (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse1 .cse7)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse3) 256)))))))) is different from false [2023-11-19 08:07:00,200 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse8 (select |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base|)) (.cse1 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (or (let ((.cse4 (store .cse8 .cse1 1))) (and (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse3 (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= (mod (select .cse0 .cse1) 256) 0) (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse0 .cse2 .cse3)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256)) (< 0 (mod .cse3 256)))))) (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse6 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse4 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse7 (select .cse6 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= (mod (select .cse6 .cse1) 256) 0) (< 0 (mod .cse7 256)) (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse6 .cse2 .cse7)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256)))))))) (not |c_ULTIMATE.start_step_#t~short17#1|)) (or |c_ULTIMATE.start_step_#t~short17#1| (let ((.cse11 (store .cse8 .cse1 0))) (and (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse11 .cse5 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse9 (select .cse10 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod .cse9 256)) (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse10 .cse2 .cse9)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256)) (= (mod (select .cse10 .cse1) 256) 0))))) (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse11 .cse5 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse13 (select .cse12 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (= (mod (select .cse12 .cse1) 256) 0) (< 0 (mod (select (select (store (store (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse12 .cse2 .cse13)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse1) 256)) (< 0 (mod .cse13 256))))))))))) is different from false [2023-11-19 08:07:00,901 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ 7 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse5 (+ 6 |c_~#BOOL_unsigned_char_Array_0~0.offset|)) (.cse6 (+ 1 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_979 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_979))) (let ((.cse0 (select .cse1 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (= (mod (select .cse0 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0) (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse2 (select (store (store .cse1 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse0 .cse5 1) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse4 (select .cse2 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod (select (select (store (store (store .cse1 |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse2 .cse3 .cse4)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256)) (= (mod (select .cse2 .cse5) 256) 0) (< 0 (mod .cse4 256)))))))))) (forall ((v_ArrVal_979 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_979))) (let ((.cse7 (select .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (not (= (mod (select .cse7 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)) (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse9 (select (store (store .cse8 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse7 .cse5 0) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse10 (select .cse9 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod (select (select (store (store (store .cse8 |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse9 .cse3 .cse10)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256)) (= (mod (select .cse9 .cse5) 256) 0) (< 0 (mod .cse10 256)))))))))) (forall ((v_ArrVal_979 (Array Int Int))) (let ((.cse12 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_979))) (let ((.cse14 (select .cse12 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse13 (select (store (store .cse12 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse14 .cse5 0) .cse6 1)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse11 (select .cse13 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod .cse11 256)) (< 0 (mod (select (select (store (store (store .cse12 |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse13 .cse3 .cse11)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256)) (= (mod (select .cse13 .cse5) 256) 0))))) (not (= (mod (select .cse14 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0)))))) (forall ((v_ArrVal_979 (Array Int Int))) (let ((.cse15 (store |c_#memory_int| |c_~#unsigned_char_Array_0~0.base| v_ArrVal_979))) (let ((.cse18 (select .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base|))) (or (forall ((v_ArrVal_985 (Array Int Int)) (v_ArrVal_982 (Array Int Int))) (let ((.cse16 (select (store (store .cse15 |c_~#BOOL_unsigned_char_Array_0~0.base| (store (store .cse18 .cse5 1) .cse6 0)) |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base|))) (let ((.cse17 (select .cse16 |c_~#BOOL_unsigned_char_Array_0~0.offset|))) (or (< 0 (mod (select (select (store (store (store .cse15 |c_~#signed_char_Array_0~0.base| v_ArrVal_982) |c_~#BOOL_unsigned_char_Array_0~0.base| (store .cse16 .cse3 .cse17)) |c_~#signed_long_int_Array_0~0.base| v_ArrVal_985) |c_~#BOOL_unsigned_char_Array_0~0.base|) .cse5) 256)) (= (mod (select .cse16 .cse5) 256) 0) (< 0 (mod .cse17 256)))))) (= (mod (select .cse18 |c_~#BOOL_unsigned_char_Array_0~0.offset|) 256) 0))))))) is different from false [2023-11-19 08:07:01,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:01,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878150251] [2023-11-19 08:07:01,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:01,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990664676] [2023-11-19 08:07:01,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990664676] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:07:01,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:07:01,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 08:07:01,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345187050] [2023-11-19 08:07:01,428 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:07:01,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:07:01,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:01,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:07:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=254, Unknown=7, NotChecked=148, Total=506 [2023-11-19 08:07:01,430 INFO L87 Difference]: Start difference. First operand 231 states and 313 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:07:02,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:02,450 INFO L93 Difference]: Finished difference Result 504 states and 690 transitions. [2023-11-19 08:07:02,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 08:07:02,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 182 [2023-11-19 08:07:02,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:02,453 INFO L225 Difference]: With dead ends: 504 [2023-11-19 08:07:02,453 INFO L226 Difference]: Without dead ends: 289 [2023-11-19 08:07:02,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=429, Unknown=7, NotChecked=196, Total=812 [2023-11-19 08:07:02,455 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 617 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 617 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:02,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [617 Valid, 327 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 08:07:02,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-19 08:07:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 234. [2023-11-19 08:07:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 197 states have (on average 1.3147208121827412) internal successors, (259), 199 states have internal predecessors, (259), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 08:07:02,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 317 transitions. [2023-11-19 08:07:02,489 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 317 transitions. Word has length 182 [2023-11-19 08:07:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:02,489 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 317 transitions. [2023-11-19 08:07:02,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 08:07:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 317 transitions. [2023-11-19 08:07:02,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 08:07:02,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:02,492 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:02,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-19 08:07:02,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:02,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:02,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:02,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1121726624, now seen corresponding path program 1 times [2023-11-19 08:07:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270634423] [2023-11-19 08:07:02,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:02,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:02,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478921533] [2023-11-19 08:07:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:02,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:02,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:02,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:02,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:07:02,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:02,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:07:02,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:07:03,807 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 64 treesize of output 48 [2023-11-19 08:07:03,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 70 [2023-11-19 08:07:03,832 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:07:03,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 25 treesize of output 25 [2023-11-19 08:07:03,952 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 79 treesize of output 59 [2023-11-19 08:07:03,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:07:03,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 87 [2023-11-19 08:07:03,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 49 [2023-11-19 08:07:04,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:04,082 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 110 treesize of output 87 [2023-11-19 08:07:04,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:07:04,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 84 [2023-11-19 08:07:04,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:07:04,547 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 134 treesize of output 105 [2023-11-19 08:07:04,692 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:07:04,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 91 treesize of output 37 [2023-11-19 08:07:04,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 08:07:04,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:07:04,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:07:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270634423] [2023-11-19 08:07:04,713 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:07:04,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478921533] [2023-11-19 08:07:04,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478921533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:07:04,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:07:04,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 08:07:04,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870051913] [2023-11-19 08:07:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:07:04,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:07:04,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:07:04,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:07:04,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:07:04,716 INFO L87 Difference]: Start difference. First operand 234 states and 317 transitions. Second operand has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:07:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:07:06,239 INFO L93 Difference]: Finished difference Result 546 states and 748 transitions. [2023-11-19 08:07:06,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:07:06,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 182 [2023-11-19 08:07:06,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:07:06,247 INFO L225 Difference]: With dead ends: 546 [2023-11-19 08:07:06,247 INFO L226 Difference]: Without dead ends: 328 [2023-11-19 08:07:06,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:07:06,249 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 432 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 1044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:07:06,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 845 Invalid, 1044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-19 08:07:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-19 08:07:06,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 237. [2023-11-19 08:07:06,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 200 states have (on average 1.31) internal successors, (262), 202 states have internal predecessors, (262), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-19 08:07:06,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 320 transitions. [2023-11-19 08:07:06,282 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 320 transitions. Word has length 182 [2023-11-19 08:07:06,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:07:06,283 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 320 transitions. [2023-11-19 08:07:06,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.833333333333333) internal successors, (70), 11 states have internal predecessors, (70), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 08:07:06,284 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 320 transitions. [2023-11-19 08:07:06,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 08:07:06,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:07:06,286 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:07:06,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 08:07:06,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:07:06,509 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:07:06,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:07:06,510 INFO L85 PathProgramCache]: Analyzing trace with hash -234996518, now seen corresponding path program 1 times [2023-11-19 08:07:06,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:07:06,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254687983] [2023-11-19 08:07:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:07:06,557 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:07:06,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937550999] [2023-11-19 08:07:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:07:06,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:07:06,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:07:06,559 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:07:06,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3fd5e702-8b19-45e8-ab0f-34f4d4b5a5a2/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:07:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:07:06,812 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:07:06,817 INFO L285 TraceCheckSpWp]: Computing forward predicates...