./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:00:04,086 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:00:04,165 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 23:00:04,171 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:00:04,172 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:00:04,221 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:00:04,221 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:00:04,222 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:00:04,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:00:04,223 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:00:04,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:00:04,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:00:04,229 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:00:04,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:00:04,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:00:04,235 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:00:04,237 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:00:04,238 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:00:04,238 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:00:04,239 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:00:04,239 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:00:04,240 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:00:04,240 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:00:04,240 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:00:04,241 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:00:04,242 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:00:04,242 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:00:04,242 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:00:04,243 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:04,243 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:00:04,245 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:00:04,245 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:00:04,245 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:00:04,245 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:00:04,246 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:00:04,246 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:00:04,246 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:00:04,246 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:00:04,247 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:00:04,247 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_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e838264e6ed88ede0832d807d635f75755550116c48539e38a7650cef86d5a2 [2023-11-06 23:00:04,584 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:00:04,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:00:04,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:00:04,630 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:00:04,630 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:00:04,632 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2023-11-06 23:00:07,730 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:00:08,016 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:00:08,017 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i [2023-11-06 23:00:08,027 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/data/a7d71ba07/4b33fbfc86724ad2953c846f1f2cce93/FLAG683967506 [2023-11-06 23:00:08,042 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/data/a7d71ba07/4b33fbfc86724ad2953c846f1f2cce93 [2023-11-06 23:00:08,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:00:08,047 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:00:08,048 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:08,048 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:00:08,054 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:00:08,055 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,056 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29e5ee83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08, skipping insertion in model container [2023-11-06 23:00:08,056 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,087 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:00:08,244 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_136e3a6c-adcf-4450-a215-a689aca6b137/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2023-11-06 23:00:08,298 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:08,311 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:00:08,324 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_136e3a6c-adcf-4450-a215-a689aca6b137/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-19.i[916,929] [2023-11-06 23:00:08,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:00:08,400 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:00:08,400 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08 WrapperNode [2023-11-06 23:00:08,401 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:00:08,402 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:08,402 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:00:08,402 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:00:08,411 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,504 INFO L138 Inliner]: procedures = 26, calls = 164, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 433 [2023-11-06 23:00:08,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:00:08,510 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:00:08,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:00:08,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:00:08,521 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,541 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,549 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,579 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,583 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,601 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,606 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:00:08,607 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:00:08,607 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:00:08,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:00:08,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (1/1) ... [2023-11-06 23:00:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:00:08,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:08,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:00:08,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:00:08,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:00:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:00:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:00:08,690 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 23:00:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 23:00:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:00:08,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:00:08,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:00:08,823 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:00:08,825 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:00:09,340 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:00:09,347 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:00:09,348 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 23:00:09,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:09 BoogieIcfgContainer [2023-11-06 23:00:09,350 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:00:09,353 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:00:09,354 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:00:09,357 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:00:09,357 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:00:08" (1/3) ... [2023-11-06 23:00:09,358 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259a9013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:09, skipping insertion in model container [2023-11-06 23:00:09,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:00:08" (2/3) ... [2023-11-06 23:00:09,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@259a9013 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:00:09, skipping insertion in model container [2023-11-06 23:00:09,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:00:09" (3/3) ... [2023-11-06 23:00:09,361 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-19.i [2023-11-06 23:00:09,381 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:00:09,381 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:00:09,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:00:09,448 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@26774273, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:00:09,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:00:09,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:09,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-06 23:00:09,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:09,471 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:09,471 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:09,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:09,477 INFO L85 PathProgramCache]: Analyzing trace with hash 504218985, now seen corresponding path program 1 times [2023-11-06 23:00:09,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:09,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892769060] [2023-11-06 23:00:09,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:09,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:09,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864390758] [2023-11-06 23:00:09,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:09,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:09,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:09,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:09,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:00:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:10,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:00:10,208 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 23:00:10,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:10,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:10,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892769060] [2023-11-06 23:00:10,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:10,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864390758] [2023-11-06 23:00:10,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864390758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:10,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:10,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:00:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987110254] [2023-11-06 23:00:10,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:10,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:00:10,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:10,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:00:10,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:00:10,405 INFO L87 Difference]: Start difference. First operand has 100 states, 80 states have (on average 1.4) internal successors, (112), 81 states have internal predecessors, (112), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:10,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:10,488 INFO L93 Difference]: Finished difference Result 197 states and 308 transitions. [2023-11-06 23:00:10,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:00:10,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-06 23:00:10,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:10,502 INFO L225 Difference]: With dead ends: 197 [2023-11-06 23:00:10,502 INFO L226 Difference]: Without dead ends: 100 [2023-11-06 23:00:10,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:00:10,510 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 3 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:10,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 394 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:00:10,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-06 23:00:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 98. [2023-11-06 23:00:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 79 states have (on average 1.3291139240506329) internal successors, (105), 79 states have internal predecessors, (105), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2023-11-06 23:00:10,572 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 132 [2023-11-06 23:00:10,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:10,577 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2023-11-06 23:00:10,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:10,578 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2023-11-06 23:00:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-06 23:00:10,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:10,586 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:10,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:10,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:10,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:10,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:10,791 INFO L85 PathProgramCache]: Analyzing trace with hash 506066027, now seen corresponding path program 1 times [2023-11-06 23:00:10,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:10,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841674370] [2023-11-06 23:00:10,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:10,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:10,871 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:10,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298552918] [2023-11-06 23:00:10,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:10,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:10,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:10,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:10,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:00:11,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:11,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 23:00:11,152 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:11,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:11,837 INFO L351 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 65 treesize of output 41 [2023-11-06 23:00:12,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:12,124 INFO L351 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 147 treesize of output 83 [2023-11-06 23:00:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2023-11-06 23:00:12,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:12,424 INFO L351 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 212 treesize of output 176 [2023-11-06 23:00:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 23:00:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:12,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841674370] [2023-11-06 23:00:12,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:12,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298552918] [2023-11-06 23:00:12,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298552918] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:12,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:12,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-06 23:00:12,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987865138] [2023-11-06 23:00:12,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:12,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:00:12,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:00:12,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:00:12,629 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:13,172 INFO L93 Difference]: Finished difference Result 275 states and 387 transitions. [2023-11-06 23:00:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:00:13,173 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-06 23:00:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:13,176 INFO L225 Difference]: With dead ends: 275 [2023-11-06 23:00:13,177 INFO L226 Difference]: Without dead ends: 180 [2023-11-06 23:00:13,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:00:13,180 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 182 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:13,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 627 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:00:13,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-06 23:00:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 106. [2023-11-06 23:00:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 87 states have (on average 1.3333333333333333) internal successors, (116), 87 states have internal predecessors, (116), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2023-11-06 23:00:13,198 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 132 [2023-11-06 23:00:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:13,199 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2023-11-06 23:00:13,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2023-11-06 23:00:13,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-06 23:00:13,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:13,202 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:13,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:13,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:13,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:13,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1082281875, now seen corresponding path program 1 times [2023-11-06 23:00:13,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:13,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61764019] [2023-11-06 23:00:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:13,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:13,521 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:13,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [604331230] [2023-11-06 23:00:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:13,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:13,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:13,526 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:13,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:00:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:13,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:00:13,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:13,790 INFO L351 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 [2023-11-06 23:00:13,804 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 23:00:13,804 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:13,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:13,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61764019] [2023-11-06 23:00:13,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:13,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604331230] [2023-11-06 23:00:13,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604331230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:13,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:13,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:00:13,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554903802] [2023-11-06 23:00:13,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:13,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:00:13,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:00:13,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:00:13,809 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:14,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:14,141 INFO L93 Difference]: Finished difference Result 291 states and 407 transitions. [2023-11-06 23:00:14,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:00:14,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 132 [2023-11-06 23:00:14,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:14,144 INFO L225 Difference]: With dead ends: 291 [2023-11-06 23:00:14,144 INFO L226 Difference]: Without dead ends: 188 [2023-11-06 23:00:14,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:00:14,147 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 85 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:14,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 553 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:00:14,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-06 23:00:14,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 111. [2023-11-06 23:00:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 92 states have (on average 1.3369565217391304) internal successors, (123), 92 states have internal predecessors, (123), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2023-11-06 23:00:14,171 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 132 [2023-11-06 23:00:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:14,171 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2023-11-06 23:00:14,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2023-11-06 23:00:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 23:00:14,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:14,174 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:14,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:14,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:14,387 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:14,387 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:14,387 INFO L85 PathProgramCache]: Analyzing trace with hash -253394688, now seen corresponding path program 1 times [2023-11-06 23:00:14,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:14,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928270480] [2023-11-06 23:00:14,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:14,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:14,468 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135882012] [2023-11-06 23:00:14,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:14,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:14,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:14,475 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:14,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:00:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:14,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-06 23:00:14,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:15,654 INFO L351 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 [2023-11-06 23:00:15,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:15,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:15,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:15,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:15,825 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 23:00:15,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-06 23:00:16,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:16,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:16,020 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:00:16,021 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 35 [2023-11-06 23:00:16,096 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2023-11-06 23:00:16,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:00:16,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928270480] [2023-11-06 23:00:16,097 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:16,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135882012] [2023-11-06 23:00:16,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135882012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:00:16,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:00:16,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:00:16,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554708549] [2023-11-06 23:00:16,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:00:16,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:00:16,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:16,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:00:16,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:00:16,103 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:17,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:17,635 INFO L93 Difference]: Finished difference Result 260 states and 366 transitions. [2023-11-06 23:00:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:00:17,636 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 133 [2023-11-06 23:00:17,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:17,638 INFO L225 Difference]: With dead ends: 260 [2023-11-06 23:00:17,638 INFO L226 Difference]: Without dead ends: 152 [2023-11-06 23:00:17,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:00:17,640 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 207 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 3 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:17,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 466 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 678 Invalid, 14 Unknown, 0 Unchecked, 1.3s Time] [2023-11-06 23:00:17,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-11-06 23:00:17,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 121. [2023-11-06 23:00:17,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.3431372549019607) internal successors, (137), 102 states have internal predecessors, (137), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:17,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 171 transitions. [2023-11-06 23:00:17,656 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 171 transitions. Word has length 133 [2023-11-06 23:00:17,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:17,657 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 171 transitions. [2023-11-06 23:00:17,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-06 23:00:17,657 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 171 transitions. [2023-11-06 23:00:17,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 23:00:17,659 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:17,660 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:17,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:17,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:17,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:17,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:17,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1071043138, now seen corresponding path program 1 times [2023-11-06 23:00:17,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:17,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719299764] [2023-11-06 23:00:17,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:17,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:17,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:17,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821203545] [2023-11-06 23:00:17,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:17,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:17,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:17,942 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:17,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:00:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:18,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 23:00:18,183 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:20,018 INFO L351 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 [2023-11-06 23:00:20,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:20,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:20,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:20,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:21,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:21,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:21,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:21,290 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:21,340 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:21,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:21,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 23:00:21,451 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-06 23:00:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 1 proven. 347 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2023-11-06 23:00:21,473 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:21,567 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| c_~var_1_11_Pointer~0.base v_ArrVal_247) c_~var_1_1_Pointer~0.base v_ArrVal_248) c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 1))) is different from false [2023-11-06 23:00:21,645 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (< 0 (+ (select (select (store (store (store (store |c_#memory_int| c_~var_1_10_Pointer~0.base v_ArrVal_245) c_~var_1_13_Pointer~0.base v_ArrVal_246) c_~var_1_11_Pointer~0.base v_ArrVal_247) c_~var_1_1_Pointer~0.base v_ArrVal_248) c_~var_1_8_Pointer~0.base) c_~var_1_8_Pointer~0.offset) 1))) is different from false [2023-11-06 23:00:21,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719299764] [2023-11-06 23:00:21,673 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:21,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821203545] [2023-11-06 23:00:21,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821203545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:21,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:21,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-06 23:00:21,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901669141] [2023-11-06 23:00:21,675 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:21,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 23:00:21,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:21,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 23:00:21,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=227, Unknown=7, NotChecked=66, Total=380 [2023-11-06 23:00:21,677 INFO L87 Difference]: Start difference. First operand 121 states and 171 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-06 23:00:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:22,690 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2023-11-06 23:00:22,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:00:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 133 [2023-11-06 23:00:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:22,693 INFO L225 Difference]: With dead ends: 268 [2023-11-06 23:00:22,693 INFO L226 Difference]: Without dead ends: 150 [2023-11-06 23:00:22,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=206, Invalid=551, Unknown=7, NotChecked=106, Total=870 [2023-11-06 23:00:22,695 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 413 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:22,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 288 Invalid, 585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:00:22,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-06 23:00:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 125. [2023-11-06 23:00:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 105 states have (on average 1.3238095238095238) internal successors, (139), 105 states have internal predecessors, (139), 17 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:22,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 173 transitions. [2023-11-06 23:00:22,713 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 173 transitions. Word has length 133 [2023-11-06 23:00:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:22,713 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 173 transitions. [2023-11-06 23:00:22,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 13 states have internal predecessors, (63), 5 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2023-11-06 23:00:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 173 transitions. [2023-11-06 23:00:22,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 23:00:22,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:22,716 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:22,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:22,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:22,923 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:22,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:22,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1657849152, now seen corresponding path program 1 times [2023-11-06 23:00:22,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:22,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918350568] [2023-11-06 23:00:22,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:22,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:22,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:22,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585629792] [2023-11-06 23:00:22,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:22,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:22,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:22,980 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:23,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:00:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:23,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 81 conjunts are in the unsatisfiable core [2023-11-06 23:00:23,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:23,759 INFO L351 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 [2023-11-06 23:00:25,040 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-06 23:00:26,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:26,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:26,404 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:27,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:27,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:27,283 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:28,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:28,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:28,162 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:28,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:28,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:28,926 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:29,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:29,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:29,559 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:30,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:30,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:30,231 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:31,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,201 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:31,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,362 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:31,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,475 INFO L351 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 27 treesize of output 25 [2023-11-06 23:00:31,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:31,913 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-06 23:00:31,914 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 59 [2023-11-06 23:00:32,044 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:32,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:32,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:32,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:32,062 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:00:32,063 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 51 [2023-11-06 23:00:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 2 proven. 506 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:00:32,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:00:32,320 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_309 (Array Int Int))) (not (= (mod (let ((.cse0 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_309))) (+ (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))) 4294967296) 0))) (forall ((v_ArrVal_309 (Array Int Int))) (not (let ((.cse1 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_309))) (= (mod (select (select .cse1 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256) (mod (select (select .cse1 c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256)))))) is different from false [2023-11-06 23:00:32,602 WARN L839 $PredicateComparison]: unable to prove that (or (= (mod (select (select |c_#memory_int| c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256) (mod (select (select |c_#memory_int| c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256)) (let ((.cse0 (select |c_#memory_int| c_~var_1_4_Pointer~0.base)) (.cse1 (select |c_#memory_int| c_~var_1_5_Pointer~0.base))) (and (forall ((~var_1_5_Pointer~0.offset Int) (~var_1_4_Pointer~0.offset Int)) (or (= (mod (+ (select .cse0 ~var_1_4_Pointer~0.offset) (select .cse1 ~var_1_5_Pointer~0.offset)) 4294967296) 0) (forall ((v_ArrVal_309 (Array Int Int))) (not (= (mod (let ((.cse2 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_309))) (+ (select (select .cse2 c_~var_1_5_Pointer~0.base) ~var_1_5_Pointer~0.offset) (select (select .cse2 c_~var_1_4_Pointer~0.base) ~var_1_4_Pointer~0.offset))) 4294967296) 0))))) (or (forall ((~var_1_5_Pointer~0.offset Int) (~var_1_4_Pointer~0.offset Int)) (= (mod (+ (select .cse0 ~var_1_4_Pointer~0.offset) (select .cse1 ~var_1_5_Pointer~0.offset)) 4294967296) 0)) (forall ((v_ArrVal_309 (Array Int Int))) (not (let ((.cse3 (store |c_#memory_int| c_~var_1_1_Pointer~0.base v_ArrVal_309))) (= (mod (select (select .cse3 c_~var_1_3_Pointer~0.base) c_~var_1_3_Pointer~0.offset) 256) (mod (select (select .cse3 c_~var_1_2_Pointer~0.base) c_~var_1_2_Pointer~0.offset) 256))))))))) is different from false [2023-11-06 23:00:37,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:00:37,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918350568] [2023-11-06 23:00:37,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:00:37,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585629792] [2023-11-06 23:00:37,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585629792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:00:37,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:00:37,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-11-06 23:00:37,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716812951] [2023-11-06 23:00:37,587 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 23:00:37,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-06 23:00:37,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:00:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-06 23:00:37,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=780, Unknown=26, NotChecked=122, Total=1122 [2023-11-06 23:00:37,590 INFO L87 Difference]: Start difference. First operand 125 states and 173 transitions. Second operand has 26 states, 24 states have (on average 3.125) internal successors, (75), 22 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 23:00:42,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:00:42,709 INFO L93 Difference]: Finished difference Result 310 states and 421 transitions. [2023-11-06 23:00:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:00:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 22 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) Word has length 133 [2023-11-06 23:00:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:00:42,712 INFO L225 Difference]: With dead ends: 310 [2023-11-06 23:00:42,712 INFO L226 Difference]: Without dead ends: 188 [2023-11-06 23:00:42,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=523, Invalid=1909, Unknown=26, NotChecked=194, Total=2652 [2023-11-06 23:00:42,715 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 774 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 1300 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:00:42,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 521 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1300 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 23:00:42,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-06 23:00:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2023-11-06 23:00:42,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 118 states have (on average 1.2966101694915255) internal successors, (153), 118 states have internal predecessors, (153), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-06 23:00:42,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 187 transitions. [2023-11-06 23:00:42,741 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 187 transitions. Word has length 133 [2023-11-06 23:00:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:00:42,742 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 187 transitions. [2023-11-06 23:00:42,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.125) internal successors, (75), 22 states have internal predecessors, (75), 9 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (17), 8 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 23:00:42,742 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 187 transitions. [2023-11-06 23:00:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 23:00:42,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:00:42,745 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:00:42,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 23:00:42,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:42,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:00:42,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:00:42,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1616049790, now seen corresponding path program 1 times [2023-11-06 23:00:42,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:00:42,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370279667] [2023-11-06 23:00:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:42,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:00:43,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 23:00:43,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [349304002] [2023-11-06 23:00:43,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:00:43,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:00:43,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:00:43,026 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:00:43,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_136e3a6c-adcf-4450-a215-a689aca6b137/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:00:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:00:46,020 INFO L262 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 155 conjunts are in the unsatisfiable core [2023-11-06 23:00:46,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:00:47,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:47,326 INFO L351 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 30 treesize of output 14 [2023-11-06 23:00:50,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:50,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:50,440 INFO L351 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 39 treesize of output 26 [2023-11-06 23:00:53,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:53,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:53,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:53,527 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2023-11-06 23:00:56,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:00:56,670 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 23:00:56,670 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 56 [2023-11-06 23:00:56,698 INFO L351 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 11 treesize of output 7 [2023-11-06 23:00:58,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 23:01:00,793 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 37 [2023-11-06 23:01:03,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:03,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:03,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:03,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:03,232 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2023-11-06 23:01:04,870 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 47 [2023-11-06 23:01:08,284 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 21 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 79 [2023-11-06 23:01:08,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,639 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:08,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 89 [2023-11-06 23:01:09,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:09,197 INFO L322 Elim1Store]: treesize reduction 40, result has 43.7 percent of original size [2023-11-06 23:01:09,198 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 34 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 2 case distinctions, treesize of input 143 treesize of output 132 [2023-11-06 23:01:11,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:01:11,260 INFO L322 Elim1Store]: treesize reduction 85, result has 9.6 percent of original size [2023-11-06 23:01:11,260 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 35 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 209 treesize of output 200 [2023-11-06 23:01:55,354 WARN L293 SmtUtils]: Spent 21.80s on a formula simplification that was a NOOP. DAG size: 215 (called from [L 319] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-06 23:01:55,354 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 23:01:55,355 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 39 case distinctions, treesize of input 341 treesize of output 625 [2023-11-06 23:02:21,135 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 3 proven. 497 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 23:02:21,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:02:45,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370279667] [2023-11-06 23:02:45,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 23:02:45,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349304002] [2023-11-06 23:02:45,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349304002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:45,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:45,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2023-11-06 23:02:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060427335] [2023-11-06 23:02:45,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 23:02:45,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-06 23:02:45,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:45,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-06 23:02:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=2697, Unknown=6, NotChecked=0, Total=2862 [2023-11-06 23:02:45,682 INFO L87 Difference]: Start difference. First operand 140 states and 187 transitions. Second operand has 42 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 10 states have call successors, (17), 10 states have call predecessors, (17), 10 states have return successors, (17), 8 states have call predecessors, (17), 10 states have call successors, (17) [2023-11-06 23:03:14,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 23:03:17,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 23:03:26,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 23:03:35,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 23:03:38,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-06 23:03:41,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]