./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/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_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/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_7ab18992-5ea2-4d00-ba47-40a698d00151/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 0cf22f9245dbade4feea04a81d691b8bb4de949e8dee88068697d6e139babf70 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:02,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:02,766 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:02,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:02,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:02,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:02,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:02,826 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:02,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:02,833 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:02,834 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:02,835 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:02,835 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:02,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:02,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:02,839 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:02,839 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:02,840 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:02,840 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:02,841 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:02,841 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:02,842 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:02,842 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:02,843 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:02,843 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:02,844 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:02,845 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:02,845 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:02,846 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:02,846 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:02,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:02,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:02,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:02,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:02,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:02,850 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:02,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:02,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:02,850 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:02,851 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_7ab18992-5ea2-4d00-ba47-40a698d00151/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cf22f9245dbade4feea04a81d691b8bb4de949e8dee88068697d6e139babf70 [2023-11-19 07:49:03,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:03,262 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:03,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:03,269 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:03,270 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:03,271 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i [2023-11-19 07:49:06,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:06,733 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:06,734 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i [2023-11-19 07:49:06,744 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/data/88f1de322/2dff78bb50954958897be2cf04fe7159/FLAGec26c0988 [2023-11-19 07:49:06,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/data/88f1de322/2dff78bb50954958897be2cf04fe7159 [2023-11-19 07:49:06,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:06,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:06,777 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:06,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:06,787 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:06,791 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:06" (1/1) ... [2023-11-19 07:49:06,793 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29679885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:06, skipping insertion in model container [2023-11-19 07:49:06,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:06" (1/1) ... [2023-11-19 07:49:06,827 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:07,014 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_7ab18992-5ea2-4d00-ba47-40a698d00151/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i[916,929] [2023-11-19 07:49:07,133 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:07,170 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:07,184 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_7ab18992-5ea2-4d00-ba47-40a698d00151/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-79.i[916,929] [2023-11-19 07:49:07,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:07,240 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:07,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07 WrapperNode [2023-11-19 07:49:07,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:07,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:07,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:07,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:07,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,265 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,311 INFO L138 Inliner]: procedures = 29, calls = 136, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 387 [2023-11-19 07:49:07,312 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:07,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:07,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:07,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:07,324 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,324 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,359 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,365 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:07,367 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:07,367 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:07,367 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:07,368 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (1/1) ... [2023-11-19 07:49:07,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:07,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:07,410 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:07,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:49:07,498 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2023-11-19 07:49:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2023-11-19 07:49:07,499 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:49:07,499 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:49:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:07,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:07,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:07,677 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:07,685 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:08,288 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:08,301 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:08,301 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:49:08,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:08 BoogieIcfgContainer [2023-11-19 07:49:08,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:08,311 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:08,311 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:08,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:08,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:06" (1/3) ... [2023-11-19 07:49:08,329 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2338fbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:08, skipping insertion in model container [2023-11-19 07:49:08,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:07" (2/3) ... [2023-11-19 07:49:08,332 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2338fbf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:08, skipping insertion in model container [2023-11-19 07:49:08,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:08" (3/3) ... [2023-11-19 07:49:08,335 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-79.i [2023-11-19 07:49:08,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:08,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:49:08,422 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:08,430 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;@36403686, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:08,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:49:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 93 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 80 states have internal predecessors, (114), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:49:08,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:08,451 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:08,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash 701302329, now seen corresponding path program 1 times [2023-11-19 07:49:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:08,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831156900] [2023-11-19 07:49:08,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:08,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:08,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831156900] [2023-11-19 07:49:08,823 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:49:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775126374] [2023-11-19 07:49:08,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:08,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:08,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:08,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:08,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:09,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:09,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:49:09,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-19 07:49:09,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:09,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775126374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:09,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:09,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:49:09,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366761719] [2023-11-19 07:49:09,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:09,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:49:09,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:09,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:49:09,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:09,341 INFO L87 Difference]: Start difference. First operand has 93 states, 79 states have (on average 1.4430379746835442) internal successors, (114), 80 states have internal predecessors, (114), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:09,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:09,380 INFO L93 Difference]: Finished difference Result 179 states and 277 transitions. [2023-11-19 07:49:09,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:49:09,383 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-11-19 07:49:09,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:09,391 INFO L225 Difference]: With dead ends: 179 [2023-11-19 07:49:09,392 INFO L226 Difference]: Without dead ends: 89 [2023-11-19 07:49:09,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:49:09,400 INFO L413 NwaCegarLoop]: 129 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, 129 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:09,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:09,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-11-19 07:49:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-11-19 07:49:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 76 states have (on average 1.4078947368421053) internal successors, (107), 76 states have internal predecessors, (107), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 129 transitions. [2023-11-19 07:49:09,454 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 129 transitions. Word has length 101 [2023-11-19 07:49:09,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:09,455 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 129 transitions. [2023-11-19 07:49:09,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:09,456 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 129 transitions. [2023-11-19 07:49:09,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:49:09,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:09,462 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:09,491 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:09,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:49:09,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:09,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash -47109517, now seen corresponding path program 1 times [2023-11-19 07:49:09,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:09,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487732867] [2023-11-19 07:49:09,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:09,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:09,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487732867] [2023-11-19 07:49:09,908 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:49:09,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593798110] [2023-11-19 07:49:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:09,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:09,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:09,916 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:09,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:10,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:10,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:10,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-19 07:49:10,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:10,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593798110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:10,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:10,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:10,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884522984] [2023-11-19 07:49:10,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:10,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:10,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:10,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:10,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:10,257 INFO L87 Difference]: Start difference. First operand 89 states and 129 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:10,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:10,332 INFO L93 Difference]: Finished difference Result 181 states and 264 transitions. [2023-11-19 07:49:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2023-11-19 07:49:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:10,343 INFO L225 Difference]: With dead ends: 181 [2023-11-19 07:49:10,344 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 07:49:10,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:10,347 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 10 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:10,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 372 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 07:49:10,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2023-11-19 07:49:10,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.3974358974358974) internal successors, (109), 78 states have internal predecessors, (109), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:10,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 131 transitions. [2023-11-19 07:49:10,384 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 131 transitions. Word has length 101 [2023-11-19 07:49:10,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:10,384 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 131 transitions. [2023-11-19 07:49:10,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:10,385 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 131 transitions. [2023-11-19 07:49:10,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:49:10,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:10,391 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:10,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:10,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-19 07:49:10,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:10,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash -248933451, now seen corresponding path program 1 times [2023-11-19 07:49:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348985020] [2023-11-19 07:49:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:10,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:10,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693447894] [2023-11-19 07:49:10,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:10,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:10,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:10,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:10,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:10,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:10,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:11,044 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:11,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348985020] [2023-11-19 07:49:11,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:11,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693447894] [2023-11-19 07:49:11,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693447894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:11,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:11,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:11,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158597293] [2023-11-19 07:49:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:11,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:11,049 INFO L87 Difference]: Start difference. First operand 91 states and 131 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:11,111 INFO L93 Difference]: Finished difference Result 183 states and 264 transitions. [2023-11-19 07:49:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2023-11-19 07:49:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:11,120 INFO L225 Difference]: With dead ends: 183 [2023-11-19 07:49:11,120 INFO L226 Difference]: Without dead ends: 95 [2023-11-19 07:49:11,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:11,123 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 3 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:11,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 370 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-11-19 07:49:11,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2023-11-19 07:49:11,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 80 states have (on average 1.3875) internal successors, (111), 80 states have internal predecessors, (111), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 133 transitions. [2023-11-19 07:49:11,155 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 133 transitions. Word has length 101 [2023-11-19 07:49:11,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:11,156 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 133 transitions. [2023-11-19 07:49:11,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:11,156 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 133 transitions. [2023-11-19 07:49:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 07:49:11,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:11,159 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:11,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:11,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:11,360 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:11,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash -247086409, now seen corresponding path program 1 times [2023-11-19 07:49:11,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:11,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726788288] [2023-11-19 07:49:11,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:11,411 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:11,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711462967] [2023-11-19 07:49:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:11,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:11,413 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:11,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:11,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:11,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:11,675 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:11,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:11,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726788288] [2023-11-19 07:49:11,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711462967] [2023-11-19 07:49:11,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711462967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:11,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:11,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:11,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804571128] [2023-11-19 07:49:11,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:11,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:11,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:11,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:11,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:11,681 INFO L87 Difference]: Start difference. First operand 93 states and 133 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:11,733 INFO L93 Difference]: Finished difference Result 203 states and 292 transitions. [2023-11-19 07:49:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2023-11-19 07:49:11,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:11,739 INFO L225 Difference]: With dead ends: 203 [2023-11-19 07:49:11,739 INFO L226 Difference]: Without dead ends: 113 [2023-11-19 07:49:11,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:11,742 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 46 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:11,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 385 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:49:11,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-19 07:49:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 95. [2023-11-19 07:49:11,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 82 states have (on average 1.3780487804878048) internal successors, (113), 82 states have internal predecessors, (113), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 135 transitions. [2023-11-19 07:49:11,756 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 135 transitions. Word has length 101 [2023-11-19 07:49:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:11,757 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 135 transitions. [2023-11-19 07:49:11,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 135 transitions. [2023-11-19 07:49:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 07:49:11,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:11,761 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:11,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:11,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:11,981 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:11,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:11,981 INFO L85 PathProgramCache]: Analyzing trace with hash -875642190, now seen corresponding path program 1 times [2023-11-19 07:49:11,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:11,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703372430] [2023-11-19 07:49:11,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:11,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:12,033 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:12,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533036073] [2023-11-19 07:49:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:12,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:12,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:12,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:49:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:12,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:12,281 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:12,351 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 18 treesize of output 10 [2023-11-19 07:49:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:12,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:12,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703372430] [2023-11-19 07:49:12,383 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:12,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533036073] [2023-11-19 07:49:12,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533036073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:12,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:12,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:49:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189049847] [2023-11-19 07:49:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:12,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:12,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:12,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:12,389 INFO L87 Difference]: Start difference. First operand 95 states and 135 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:12,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:12,649 INFO L93 Difference]: Finished difference Result 234 states and 331 transitions. [2023-11-19 07:49:12,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:12,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 103 [2023-11-19 07:49:12,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:12,653 INFO L225 Difference]: With dead ends: 234 [2023-11-19 07:49:12,653 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 07:49:12,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:12,658 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 85 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:12,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 449 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:12,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 07:49:12,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 97. [2023-11-19 07:49:12,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 84 states have (on average 1.369047619047619) internal successors, (115), 84 states have internal predecessors, (115), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 137 transitions. [2023-11-19 07:49:12,685 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 137 transitions. Word has length 103 [2023-11-19 07:49:12,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:12,686 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 137 transitions. [2023-11-19 07:49:12,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:12,687 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 137 transitions. [2023-11-19 07:49:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 07:49:12,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:12,690 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:12,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:12,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:12,903 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:12,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:12,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1723383007, now seen corresponding path program 1 times [2023-11-19 07:49:12,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:12,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240385144] [2023-11-19 07:49:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:12,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:12,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:12,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099590519] [2023-11-19 07:49:12,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:12,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:12,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:12,986 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:13,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:49:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:13,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:49:13,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:14,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:14,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:14,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:14,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 49 [2023-11-19 07:49:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:14,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 223 treesize of output 143 [2023-11-19 07:49:14,694 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 27 proven. 3 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-11-19 07:49:14,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:15,270 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_442 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse0 (mod (+ (select (select .cse2 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (or (< 127 .cse0) (forall ((~var_1_1_Pointer~0.offset Int)) (let ((.cse1 (mod (+ 224 (select (select (store .cse2 c_~var_1_1_Pointer~0.base (store (select .cse2 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset .cse0)) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (= .cse0 .cse1) (< 127 .cse1)))))))) (forall ((v_ArrVal_442 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse3 (mod (+ (select (select .cse4 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (or (forall ((~var_1_1_Pointer~0.offset Int)) (= .cse3 (mod (+ 224 (select (select (store .cse4 c_~var_1_1_Pointer~0.base (store (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ .cse3 (- 256)))) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (< .cse3 128))))) (forall ((v_ArrVal_442 (Array Int Int))) (let ((.cse6 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse5 (mod (+ (select (select .cse6 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (or (< .cse5 128) (forall ((~var_1_1_Pointer~0.offset Int)) (< 127 (mod (+ 224 (select (select (store .cse6 c_~var_1_1_Pointer~0.base (store (select .cse6 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ .cse5 (- 256)))) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))))))) (forall ((v_ArrVal_442 (Array Int Int))) (let ((.cse8 (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse7 (mod (+ (select (select .cse8 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (or (forall ((~var_1_1_Pointer~0.offset Int)) (= .cse7 (mod (+ 224 (select (select (store .cse8 c_~var_1_1_Pointer~0.base (store (select .cse8 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset .cse7)) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (< 127 .cse7)))))) is different from false [2023-11-19 07:49:15,552 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_441 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_441) c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse1 (mod (+ 224 (select (select .cse0 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (forall ((~var_1_1_Pointer~0.offset Int)) (< 127 (mod (+ (select (select (store .cse0 c_~var_1_1_Pointer~0.base (store (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ (- 256) .cse1))) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (< .cse1 128))))) (forall ((v_ArrVal_441 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (let ((.cse4 (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_441) c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse2 (mod (+ 224 (select (select .cse4 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (< 127 .cse2) (forall ((~var_1_1_Pointer~0.offset Int)) (let ((.cse3 (mod (+ 224 (select (select (store .cse4 c_~var_1_1_Pointer~0.base (store (select .cse4 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset .cse2)) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (< 127 .cse3) (= .cse3 .cse2)))))))) (forall ((v_ArrVal_441 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (let ((.cse6 (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_441) c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse5 (mod (+ 224 (select (select .cse6 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (forall ((~var_1_1_Pointer~0.offset Int)) (= .cse5 (mod (+ (select (select (store .cse6 c_~var_1_1_Pointer~0.base (store (select .cse6 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ (- 256) .cse5))) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 224) 256))) (< .cse5 128))))) (forall ((v_ArrVal_441 (Array Int Int)) (v_ArrVal_442 (Array Int Int))) (let ((.cse8 (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_441) c_~var_1_12_Pointer~0.base v_ArrVal_442))) (let ((.cse7 (mod (+ 224 (select (select .cse8 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256))) (or (< 127 .cse7) (forall ((~var_1_1_Pointer~0.offset Int)) (= (mod (+ 224 (select (select (store .cse8 c_~var_1_1_Pointer~0.base (store (select .cse8 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset .cse7)) c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset)) 256) .cse7))))))) is different from false [2023-11-19 07:49:15,829 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:49:15,831 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 74151 treesize of output 72263 [2023-11-19 07:49:16,101 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 839 treesize of output 813 [2023-11-19 07:49:16,134 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 845 treesize of output 819 [2023-11-19 07:49:16,178 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 886 treesize of output 834 [2023-11-19 07:49:29,002 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:49:29,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 10028 treesize of output 9380 [2023-11-19 07:49:29,079 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:49:29,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 5047 treesize of output 4655 [2023-11-19 07:49:29,117 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:49:29,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 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 5047 treesize of output 4655 [2023-11-19 07:49:29,347 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:29,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:29,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240385144] [2023-11-19 07:49:29,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:29,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099590519] [2023-11-19 07:49:29,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099590519] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:29,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:29,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2023-11-19 07:49:29,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650596308] [2023-11-19 07:49:29,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:29,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:49:29,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:29,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:49:29,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=186, Unknown=2, NotChecked=58, Total=306 [2023-11-19 07:49:29,352 INFO L87 Difference]: Start difference. First operand 97 states and 137 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:33,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:33,530 INFO L93 Difference]: Finished difference Result 283 states and 400 transitions. [2023-11-19 07:49:33,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:49:33,535 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 104 [2023-11-19 07:49:33,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:33,537 INFO L225 Difference]: With dead ends: 283 [2023-11-19 07:49:33,537 INFO L226 Difference]: Without dead ends: 189 [2023-11-19 07:49:33,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=148, Invalid=508, Unknown=2, NotChecked=98, Total=756 [2023-11-19 07:49:33,539 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 276 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 497 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 605 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 212 Invalid, 0 Unknown, 497 Unchecked, 0.5s Time] [2023-11-19 07:49:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-19 07:49:33,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 101. [2023-11-19 07:49:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 88 states have (on average 1.375) internal successors, (121), 88 states have internal predecessors, (121), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:33,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 143 transitions. [2023-11-19 07:49:33,551 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 143 transitions. Word has length 104 [2023-11-19 07:49:33,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:33,552 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 143 transitions. [2023-11-19 07:49:33,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:33,552 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 143 transitions. [2023-11-19 07:49:33,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:49:33,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:33,555 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:33,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:49:33,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:33,757 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:33,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:33,758 INFO L85 PathProgramCache]: Analyzing trace with hash -998735524, now seen corresponding path program 1 times [2023-11-19 07:49:33,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:33,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926575113] [2023-11-19 07:49:33,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:33,823 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:33,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100342449] [2023-11-19 07:49:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:33,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:33,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:34,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:49:34,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:34,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,653 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 15 treesize of output 15 [2023-11-19 07:49:34,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:34,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 07:49:34,873 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:34,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:34,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926575113] [2023-11-19 07:49:34,874 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:34,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100342449] [2023-11-19 07:49:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100342449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:34,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:49:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877724065] [2023-11-19 07:49:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:34,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:49:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:34,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:49:34,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:49:34,878 INFO L87 Difference]: Start difference. First operand 101 states and 143 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:35,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:35,451 INFO L93 Difference]: Finished difference Result 246 states and 347 transitions. [2023-11-19 07:49:35,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:49:35,452 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2023-11-19 07:49:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:35,455 INFO L225 Difference]: With dead ends: 246 [2023-11-19 07:49:35,455 INFO L226 Difference]: Without dead ends: 148 [2023-11-19 07:49:35,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:49:35,457 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 291 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:35,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 495 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:35,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-19 07:49:35,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 117. [2023-11-19 07:49:35,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 104 states have (on average 1.375) internal successors, (143), 104 states have internal predecessors, (143), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 165 transitions. [2023-11-19 07:49:35,470 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 165 transitions. Word has length 106 [2023-11-19 07:49:35,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:35,471 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 165 transitions. [2023-11-19 07:49:35,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:35,471 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 165 transitions. [2023-11-19 07:49:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:49:35,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:35,473 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:35,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:35,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:35,689 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:35,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:35,689 INFO L85 PathProgramCache]: Analyzing trace with hash -745900741, now seen corresponding path program 1 times [2023-11-19 07:49:35,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203493963] [2023-11-19 07:49:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:35,741 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:35,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [750389072] [2023-11-19 07:49:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:35,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:35,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:35,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:35,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:49:35,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:35,958 INFO L262 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:49:35,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:37,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:49:37,353 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 8 treesize of output 1 [2023-11-19 07:49:37,401 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:49:37,401 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:37,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:37,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:37,455 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:49:37,455 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2023-11-19 07:49:37,506 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 07:49:37,506 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 28 treesize of output 12 [2023-11-19 07:49:37,522 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 07:49:37,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:37,680 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_600 (Array Int Int)) (v_ArrVal_602 (Array Int Int)) (~var_1_12_Pointer~0.offset Int)) (let ((.cse1 (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_600))) (let ((.cse0 (select (select .cse1 c_~var_1_13_Pointer~0.base) c_~var_1_13_Pointer~0.offset))) (or (< 0 (mod .cse0 256)) (< (mod (select (select (store (store .cse1 c_~var_1_12_Pointer~0.base (store (select .cse1 c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset .cse0)) c_~var_1_1_Pointer~0.base v_ArrVal_602) c_~var_1_12_Pointer~0.base) ~var_1_12_Pointer~0.offset) 256) 1))))) is different from false [2023-11-19 07:49:37,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:37,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203493963] [2023-11-19 07:49:37,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750389072] [2023-11-19 07:49:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750389072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:37,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:37,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:49:37,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170645776] [2023-11-19 07:49:37,748 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:37,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:37,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:37,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:37,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=118, Unknown=1, NotChecked=22, Total=182 [2023-11-19 07:49:37,750 INFO L87 Difference]: Start difference. First operand 117 states and 165 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:38,337 INFO L93 Difference]: Finished difference Result 299 states and 420 transitions. [2023-11-19 07:49:38,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:49:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2023-11-19 07:49:38,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:38,340 INFO L225 Difference]: With dead ends: 299 [2023-11-19 07:49:38,340 INFO L226 Difference]: Without dead ends: 185 [2023-11-19 07:49:38,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=212, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:49:38,342 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 395 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:38,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 438 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 264 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-19 07:49:38,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 117. [2023-11-19 07:49:38,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 104 states have internal predecessors, (142), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:38,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 164 transitions. [2023-11-19 07:49:38,355 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 164 transitions. Word has length 106 [2023-11-19 07:49:38,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:38,355 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 164 transitions. [2023-11-19 07:49:38,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:38,356 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 164 transitions. [2023-11-19 07:49:38,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:49:38,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:38,357 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:38,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:38,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:49:38,577 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash -274939641, now seen corresponding path program 1 times [2023-11-19 07:49:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317680433] [2023-11-19 07:49:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:38,607 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:38,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347955644] [2023-11-19 07:49:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:38,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:38,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:38,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:38,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:49:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:38,843 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:49:38,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:39,194 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:49:39,194 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:39,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:39,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-19 07:49:39,282 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 18 treesize of output 10 [2023-11-19 07:49:39,296 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:39,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:39,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317680433] [2023-11-19 07:49:39,296 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:39,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347955644] [2023-11-19 07:49:39,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347955644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:39,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:39,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:49:39,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397656803] [2023-11-19 07:49:39,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:39,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:39,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:39,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:39,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:39,299 INFO L87 Difference]: Start difference. First operand 117 states and 164 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:39,640 INFO L93 Difference]: Finished difference Result 272 states and 379 transitions. [2023-11-19 07:49:39,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:39,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 106 [2023-11-19 07:49:39,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:39,645 INFO L225 Difference]: With dead ends: 272 [2023-11-19 07:49:39,645 INFO L226 Difference]: Without dead ends: 158 [2023-11-19 07:49:39,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:39,646 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 147 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:39,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 449 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:49:39,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-19 07:49:39,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 109. [2023-11-19 07:49:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 96 states have (on average 1.3541666666666667) internal successors, (130), 96 states have internal predecessors, (130), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 152 transitions. [2023-11-19 07:49:39,660 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 152 transitions. Word has length 106 [2023-11-19 07:49:39,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:39,662 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 152 transitions. [2023-11-19 07:49:39,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 152 transitions. [2023-11-19 07:49:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:49:39,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:39,664 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:39,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:39,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:39,885 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:39,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:39,885 INFO L85 PathProgramCache]: Analyzing trace with hash 321834260, now seen corresponding path program 1 times [2023-11-19 07:49:39,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:39,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941777172] [2023-11-19 07:49:39,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:39,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:39,923 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:39,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501014093] [2023-11-19 07:49:39,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:39,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:39,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:39,925 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:39,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:49:40,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:40,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 07:49:40,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:40,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:49:41,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:41,025 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 07:49:41,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:49:41,073 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 07:49:41,073 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:41,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:41,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941777172] [2023-11-19 07:49:41,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:41,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501014093] [2023-11-19 07:49:41,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501014093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:41,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:41,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 07:49:41,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759249164] [2023-11-19 07:49:41,225 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:49:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:49:41,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=116, Unknown=5, NotChecked=0, Total=156 [2023-11-19 07:49:41,226 INFO L87 Difference]: Start difference. First operand 109 states and 152 transitions. Second operand has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:41,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:41,807 INFO L93 Difference]: Finished difference Result 226 states and 316 transitions. [2023-11-19 07:49:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2023-11-19 07:49:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:41,809 INFO L225 Difference]: With dead ends: 226 [2023-11-19 07:49:41,809 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 07:49:41,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 123 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=283, Unknown=6, NotChecked=0, Total=380 [2023-11-19 07:49:41,811 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 98 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:41,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 478 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:49:41,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 07:49:41,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 111. [2023-11-19 07:49:41,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 98 states have (on average 1.346938775510204) internal successors, (132), 98 states have internal predecessors, (132), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 154 transitions. [2023-11-19 07:49:41,822 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 154 transitions. Word has length 107 [2023-11-19 07:49:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:41,823 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 154 transitions. [2023-11-19 07:49:41,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 154 transitions. [2023-11-19 07:49:41,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:49:41,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:41,825 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:41,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:49:42,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:42,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1637714291, now seen corresponding path program 1 times [2023-11-19 07:49:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617100764] [2023-11-19 07:49:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:42,081 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:42,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [111011733] [2023-11-19 07:49:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:42,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:42,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:42,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:42,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:49:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:42,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-19 07:49:42,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:43,096 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 15 treesize of output 15 [2023-11-19 07:49:43,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:43,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:43,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 07:49:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:43,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:43,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-19 07:49:43,313 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:43,314 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:43,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:43,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617100764] [2023-11-19 07:49:43,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:43,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111011733] [2023-11-19 07:49:43,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111011733] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:43,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:43,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:49:43,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060138849] [2023-11-19 07:49:43,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:49:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:49:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:49:43,317 INFO L87 Difference]: Start difference. First operand 111 states and 154 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:44,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:44,095 INFO L93 Difference]: Finished difference Result 297 states and 410 transitions. [2023-11-19 07:49:44,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:49:44,096 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 107 [2023-11-19 07:49:44,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:44,097 INFO L225 Difference]: With dead ends: 297 [2023-11-19 07:49:44,098 INFO L226 Difference]: Without dead ends: 189 [2023-11-19 07:49:44,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2023-11-19 07:49:44,099 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 368 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:44,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 653 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:49:44,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-19 07:49:44,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 120. [2023-11-19 07:49:44,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 107 states have (on average 1.3457943925233644) internal successors, (144), 107 states have internal predecessors, (144), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:44,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2023-11-19 07:49:44,110 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 107 [2023-11-19 07:49:44,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:44,111 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2023-11-19 07:49:44,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 10 states have internal predecessors, (55), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:44,111 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2023-11-19 07:49:44,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:49:44,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:44,113 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:44,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:44,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:44,335 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:44,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:44,335 INFO L85 PathProgramCache]: Analyzing trace with hash 974687589, now seen corresponding path program 1 times [2023-11-19 07:49:44,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:44,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021304692] [2023-11-19 07:49:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:44,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:44,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [148205272] [2023-11-19 07:49:44,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:44,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:44,371 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:44,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:49:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:44,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:49:44,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:45,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:49:45,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:45,696 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 07:49:45,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:45,734 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 07:49:45,763 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:49:45,764 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 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 07:49:45,811 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-19 07:49:45,811 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 28 treesize of output 12 [2023-11-19 07:49:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-11-19 07:49:45,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:45,898 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_926 (Array Int Int))) (< (mod (select (select (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_926) c_~var_1_13_Pointer~0.base) c_~var_1_13_Pointer~0.offset) 256) 1)) is different from false [2023-11-19 07:49:46,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:46,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021304692] [2023-11-19 07:49:46,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:46,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148205272] [2023-11-19 07:49:46,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148205272] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:46,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:46,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-19 07:49:46,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924149946] [2023-11-19 07:49:46,044 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:46,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:49:46,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:49:46,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=187, Unknown=10, NotChecked=28, Total=272 [2023-11-19 07:49:46,046 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:46,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:46,865 INFO L93 Difference]: Finished difference Result 274 states and 377 transitions. [2023-11-19 07:49:46,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:49:46,866 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2023-11-19 07:49:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:46,868 INFO L225 Difference]: With dead ends: 274 [2023-11-19 07:49:46,868 INFO L226 Difference]: Without dead ends: 153 [2023-11-19 07:49:46,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=465, Unknown=11, NotChecked=46, Total=650 [2023-11-19 07:49:46,870 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 141 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:46,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 644 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 468 Invalid, 3 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:49:46,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-19 07:49:46,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 116. [2023-11-19 07:49:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 103 states have (on average 1.3398058252427185) internal successors, (138), 103 states have internal predecessors, (138), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:46,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 160 transitions. [2023-11-19 07:49:46,882 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 160 transitions. Word has length 108 [2023-11-19 07:49:46,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:46,883 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 160 transitions. [2023-11-19 07:49:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 10 states have internal predecessors, (59), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 07:49:46,883 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 160 transitions. [2023-11-19 07:49:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:49:46,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:46,885 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:46,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:47,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:47,104 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:47,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 645243349, now seen corresponding path program 1 times [2023-11-19 07:49:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482015870] [2023-11-19 07:49:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:47,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:47,133 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:47,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127196371] [2023-11-19 07:49:47,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:47,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:47,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:49:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:47,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:49:47,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:47,703 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-19 07:49:47,703 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 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:47,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:47,773 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2023-11-19 07:49:47,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 29 treesize of output 29 [2023-11-19 07:49:47,783 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 9 treesize of output 7 [2023-11-19 07:49:47,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:49:47,816 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:47,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:47,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:47,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482015870] [2023-11-19 07:49:47,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:47,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127196371] [2023-11-19 07:49:47,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127196371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:47,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:47,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:49:47,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411687856] [2023-11-19 07:49:47,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:47,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:49:47,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:47,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:49:47,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:47,822 INFO L87 Difference]: Start difference. First operand 116 states and 160 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:48,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:48,076 INFO L93 Difference]: Finished difference Result 229 states and 317 transitions. [2023-11-19 07:49:48,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:48,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 108 [2023-11-19 07:49:48,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:48,078 INFO L225 Difference]: With dead ends: 229 [2023-11-19 07:49:48,078 INFO L226 Difference]: Without dead ends: 108 [2023-11-19 07:49:48,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:49:48,079 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 172 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:48,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 275 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:49:48,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-19 07:49:48,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-11-19 07:49:48,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 95 states have (on average 1.305263157894737) internal successors, (124), 95 states have internal predecessors, (124), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:48,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 146 transitions. [2023-11-19 07:49:48,089 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 146 transitions. Word has length 108 [2023-11-19 07:49:48,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:48,090 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 146 transitions. [2023-11-19 07:49:48,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 6 states have internal predecessors, (56), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 07:49:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 146 transitions. [2023-11-19 07:49:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:49:48,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:48,091 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:48,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:48,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:49:48,297 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:48,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:48,297 INFO L85 PathProgramCache]: Analyzing trace with hash -432132998, now seen corresponding path program 1 times [2023-11-19 07:49:48,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:48,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410625769] [2023-11-19 07:49:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:48,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:48,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1147547956] [2023-11-19 07:49:48,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:48,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:48,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:48,328 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:48,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:49:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:48,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-19 07:49:48,612 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:49,257 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:49:49,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:49,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:50,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:50,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:50,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:49:50,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:50,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:50,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:49:50,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:50,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:50,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:49:51,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:51,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 07:49:51,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2023-11-19 07:49:51,228 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 07:49:51,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:51,384 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1099 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_1099))) (< (select (select .cse0 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (+ (* (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (mod c_~last_1_var_1_10~0 65536)) 1)))) is different from false [2023-11-19 07:49:51,396 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1099 (Array Int Int)) (v_ArrVal_1098 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_12_Pointer~0.base v_ArrVal_1098) c_~var_1_1_Pointer~0.base v_ArrVal_1099))) (< (select (select .cse0 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (+ (* (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) (mod c_~last_1_var_1_10~0 65536)) 1)))) is different from false [2023-11-19 07:49:52,892 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_z_5 Int) (v_ArrVal_1099 (Array Int Int)) (v_ArrVal_1098 (Array Int Int)) (v_ArrVal_1097 (Array Int Int))) (or (< 65535 v_z_5) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_1097) c_~var_1_12_Pointer~0.base v_ArrVal_1098) c_~var_1_1_Pointer~0.base v_ArrVal_1099))) (< (select (select .cse0 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (+ (* (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) v_z_5) 1))) (< v_z_5 0) (< (* v_z_5 |c_ULTIMATE.start_step_#t~mem9#1|) |c_ULTIMATE.start_step_~stepLocal_0~0#1|))) is different from false [2023-11-19 07:49:52,924 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_z_5 Int) (v_ArrVal_1099 (Array Int Int)) (v_ArrVal_1098 (Array Int Int)) (v_ArrVal_1097 (Array Int Int))) (or (< 65535 v_z_5) (let ((.cse0 (store (store (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_1097) c_~var_1_12_Pointer~0.base v_ArrVal_1098) c_~var_1_1_Pointer~0.base v_ArrVal_1099))) (< (select (select .cse0 c_~var_1_5_Pointer~0.base) c_~var_1_5_Pointer~0.offset) (+ (* (select (select .cse0 c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset) v_z_5) 1))) (< v_z_5 0) (< (* v_z_5 (select (select |c_#memory_int| c_~var_1_4_Pointer~0.base) c_~var_1_4_Pointer~0.offset)) |c_ULTIMATE.start_step_#t~ite6#1|))) is different from false [2023-11-19 07:49:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410625769] [2023-11-19 07:49:53,304 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:53,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147547956] [2023-11-19 07:49:53,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147547956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:53,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:53,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-19 07:49:53,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518942395] [2023-11-19 07:49:53,305 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:49:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:53,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:49:53,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=511, Unknown=34, NotChecked=204, Total=870 [2023-11-19 07:49:53,307 INFO L87 Difference]: Start difference. First operand 108 states and 146 transitions. Second operand has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 7 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-19 07:49:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:49:54,698 INFO L93 Difference]: Finished difference Result 312 states and 423 transitions. [2023-11-19 07:49:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:49:54,699 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 7 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) Word has length 110 [2023-11-19 07:49:54,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:49:54,702 INFO L225 Difference]: With dead ends: 312 [2023-11-19 07:49:54,702 INFO L226 Difference]: Without dead ends: 207 [2023-11-19 07:49:54,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=248, Invalid=790, Unknown=34, NotChecked=260, Total=1332 [2023-11-19 07:49:54,705 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 587 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 30 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:49:54,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 460 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 603 Invalid, 11 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:49:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-19 07:49:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 141. [2023-11-19 07:49:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 128 states have (on average 1.296875) internal successors, (166), 128 states have internal predecessors, (166), 11 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 07:49:54,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 188 transitions. [2023-11-19 07:49:54,722 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 188 transitions. Word has length 110 [2023-11-19 07:49:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:49:54,723 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 188 transitions. [2023-11-19 07:49:54,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.0) internal successors, (76), 18 states have internal predecessors, (76), 7 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-19 07:49:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 188 transitions. [2023-11-19 07:49:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:49:54,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:49:54,725 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:54,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-19 07:49:54,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:49:54,942 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:49:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 268931580, now seen corresponding path program 1 times [2023-11-19 07:49:54,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191095604] [2023-11-19 07:49:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:54,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:54,973 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:54,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1523527439] [2023-11-19 07:49:54,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:54,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:54,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:54,975 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:55,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ab18992-5ea2-4d00-ba47-40a698d00151/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:49:55,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:55,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:49:55,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:56,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:56,121 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 22 treesize of output 17 [2023-11-19 07:49:56,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:56,192 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 22 treesize of output 17 [2023-11-19 07:49:56,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:56,244 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 22 treesize of output 17 [2023-11-19 07:49:56,344 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 21 treesize of output 13 [2023-11-19 07:49:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-11-19 07:49:56,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:56,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:56,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191095604] [2023-11-19 07:49:56,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:56,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523527439] [2023-11-19 07:49:56,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523527439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:56,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:56,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:49:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126162715] [2023-11-19 07:49:56,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:56,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:49:56,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:56,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:49:56,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:49:56,369 INFO L87 Difference]: Start difference. First operand 141 states and 188 transitions. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 8 states have internal predecessors, (58), 1 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11)