./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9f2585eba40b5252f785f265b9872263af0c48c9373a5d882dd5881c41fcdf34 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:47:29,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:47:29,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:47:29,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:47:29,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:47:29,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:47:29,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:47:29,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:47:29,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:47:29,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:47:29,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:47:29,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:47:29,443 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:47:29,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:47:29,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:47:29,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:47:29,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:47:29,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:47:29,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:47:29,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:47:29,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:47:29,449 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:47:29,449 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:47:29,450 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:47:29,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:47:29,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:47:29,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:47:29,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:47:29,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:29,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:47:29,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:47:29,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:47:29,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:47:29,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:47:29,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:47:29,457 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:47:29,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:47:29,458 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:47:29,458 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:47:29,458 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_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9f2585eba40b5252f785f265b9872263af0c48c9373a5d882dd5881c41fcdf34 [2023-11-19 07:47:29,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:47:29,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:47:29,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:47:29,765 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:47:29,765 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:47:29,767 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i [2023-11-19 07:47:32,886 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:47:33,165 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:47:33,166 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i [2023-11-19 07:47:33,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/data/f8cb391a5/36fb20d7d2134f75bbe0fad578bd60dd/FLAGc3b531e1f [2023-11-19 07:47:33,191 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/data/f8cb391a5/36fb20d7d2134f75bbe0fad578bd60dd [2023-11-19 07:47:33,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:47:33,195 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:47:33,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:33,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:47:33,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:47:33,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@693b6a8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33, skipping insertion in model container [2023-11-19 07:47:33,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,242 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:47:33,392 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_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i[916,929] [2023-11-19 07:47:33,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:33,481 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:47:33,491 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_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-a_file-59.i[916,929] [2023-11-19 07:47:33,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:47:33,555 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:47:33,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33 WrapperNode [2023-11-19 07:47:33,555 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:47:33,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:33,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:47:33,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:47:33,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,624 INFO L138 Inliner]: procedures = 26, calls = 129, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 314 [2023-11-19 07:47:33,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:47:33,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:47:33,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:47:33,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:47:33,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,673 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,675 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:47:33,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:47:33,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:47:33,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:47:33,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (1/1) ... [2023-11-19 07:47:33,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:47:33,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:33,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:47:33,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:47:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:47:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:47:33,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:47:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:47:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:47:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:47:33,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:47:33,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:47:33,878 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:47:33,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:47:34,396 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:47:34,405 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:47:34,405 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:47:34,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:34 BoogieIcfgContainer [2023-11-19 07:47:34,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:47:34,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:47:34,413 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:47:34,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:47:34,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:47:33" (1/3) ... [2023-11-19 07:47:34,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3a364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:47:33" (2/3) ... [2023-11-19 07:47:34,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fd3a364 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:47:34, skipping insertion in model container [2023-11-19 07:47:34,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:47:34" (3/3) ... [2023-11-19 07:47:34,420 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-a_file-59.i [2023-11-19 07:47:34,441 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:47:34,441 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:47:34,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:47:34,502 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c9f77d2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:47:34,502 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:47:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:47:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:47:34,523 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:34,524 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:34,525 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:34,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:34,531 INFO L85 PathProgramCache]: Analyzing trace with hash 671104331, now seen corresponding path program 1 times [2023-11-19 07:47:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:34,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893613210] [2023-11-19 07:47:34,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:34,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:34,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893613210] [2023-11-19 07:47:34,768 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:47:34,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910381480] [2023-11-19 07:47:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:34,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:34,781 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:34,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:47:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:47:35,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2023-11-19 07:47:35,125 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:35,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910381480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:35,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:35,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:47:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274484381] [2023-11-19 07:47:35,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:47:35,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:35,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:47:35,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:35,180 INFO L87 Difference]: Start difference. First operand has 84 states, 63 states have (on average 1.3650793650793651) internal successors, (86), 64 states have internal predecessors, (86), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:35,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:35,212 INFO L93 Difference]: Finished difference Result 161 states and 256 transitions. [2023-11-19 07:47:35,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:47:35,215 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2023-11-19 07:47:35,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:35,224 INFO L225 Difference]: With dead ends: 161 [2023-11-19 07:47:35,224 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 07:47:35,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:47:35,231 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:35,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 07:47:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-19 07:47:35,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 60 states have internal predecessors, (79), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 07:47:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2023-11-19 07:47:35,312 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 131 [2023-11-19 07:47:35,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:35,313 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2023-11-19 07:47:35,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:35,314 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2023-11-19 07:47:35,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-19 07:47:35,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:35,322 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:35,337 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:47:35,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:35,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash 244988199, now seen corresponding path program 1 times [2023-11-19 07:47:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:35,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272820286] [2023-11-19 07:47:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:35,657 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268678524] [2023-11-19 07:47:35,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:35,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:35,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:35,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:35,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:47:35,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:35,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:35,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:36,050 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:36,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 31 [2023-11-19 07:47:36,673 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:36,673 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:36,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:36,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272820286] [2023-11-19 07:47:36,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:36,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268678524] [2023-11-19 07:47:36,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268678524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:36,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:36,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:36,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144406005] [2023-11-19 07:47:36,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:36,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:47:36,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:36,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:47:36,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:47:36,685 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:36,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:36,912 INFO L93 Difference]: Finished difference Result 235 states and 340 transitions. [2023-11-19 07:47:36,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:36,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 131 [2023-11-19 07:47:36,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:36,917 INFO L225 Difference]: With dead ends: 235 [2023-11-19 07:47:36,917 INFO L226 Difference]: Without dead ends: 158 [2023-11-19 07:47:36,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:36,920 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 51 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:36,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 253 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-19 07:47:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2023-11-19 07:47:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 109 states have (on average 1.3027522935779816) internal successors, (142), 109 states have internal predecessors, (142), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:47:36,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 214 transitions. [2023-11-19 07:47:36,960 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 214 transitions. Word has length 131 [2023-11-19 07:47:36,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:36,962 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 214 transitions. [2023-11-19 07:47:36,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 3 states have internal predecessors, (44), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:36,963 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 214 transitions. [2023-11-19 07:47:36,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:36,983 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:36,983 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:37,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:37,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2109018711, now seen corresponding path program 1 times [2023-11-19 07:47:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681551337] [2023-11-19 07:47:37,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,253 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:37,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1712757675] [2023-11-19 07:47:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:37,256 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:37,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:47:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:47:37,454 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:37,471 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:37,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:37,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:37,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681551337] [2023-11-19 07:47:37,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:37,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712757675] [2023-11-19 07:47:37,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712757675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:37,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:37,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:47:37,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4653081] [2023-11-19 07:47:37,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:37,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:47:37,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:47:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:37,476 INFO L87 Difference]: Start difference. First operand 148 states and 214 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:37,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:37,499 INFO L93 Difference]: Finished difference Result 248 states and 363 transitions. [2023-11-19 07:47:37,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:47:37,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2023-11-19 07:47:37,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:37,503 INFO L225 Difference]: With dead ends: 248 [2023-11-19 07:47:37,503 INFO L226 Difference]: Without dead ends: 150 [2023-11-19 07:47:37,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:47:37,505 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:37,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 222 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:47:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-19 07:47:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-19 07:47:37,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 111 states have (on average 1.2972972972972974) internal successors, (144), 111 states have internal predecessors, (144), 36 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-19 07:47:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 216 transitions. [2023-11-19 07:47:37,527 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 216 transitions. Word has length 133 [2023-11-19 07:47:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:37,528 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 216 transitions. [2023-11-19 07:47:37,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 216 transitions. [2023-11-19 07:47:37,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:37,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:37,531 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:37,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:37,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,747 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:37,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:37,748 INFO L85 PathProgramCache]: Analyzing trace with hash 114874005, now seen corresponding path program 1 times [2023-11-19 07:47:37,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:37,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930580112] [2023-11-19 07:47:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:37,815 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:37,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2071299804] [2023-11-19 07:47:37,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:37,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:37,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:37,817 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:37,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:47:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:37,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:47:38,002 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:38,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:38,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:38,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:39,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:47:39,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:47:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:39,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:39,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:39,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:47:39,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:47:39,448 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-19 07:47:39,449 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:39,481 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_196 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_196) |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|) 2)) is different from false [2023-11-19 07:47:39,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:39,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930580112] [2023-11-19 07:47:39,566 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:39,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071299804] [2023-11-19 07:47:39,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071299804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:39,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:39,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-11-19 07:47:39,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092199606] [2023-11-19 07:47:39,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:39,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:39,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:39,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:39,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=4, NotChecked=16, Total=110 [2023-11-19 07:47:39,570 INFO L87 Difference]: Start difference. First operand 150 states and 216 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:39,912 INFO L93 Difference]: Finished difference Result 319 states and 462 transitions. [2023-11-19 07:47:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:47:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2023-11-19 07:47:39,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:39,916 INFO L225 Difference]: With dead ends: 319 [2023-11-19 07:47:39,916 INFO L226 Difference]: Without dead ends: 228 [2023-11-19 07:47:39,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=4, NotChecked=18, Total=132 [2023-11-19 07:47:39,917 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 112 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:39,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 351 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:39,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-19 07:47:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 226. [2023-11-19 07:47:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 168 states have (on average 1.2976190476190477) internal successors, (218), 168 states have internal predecessors, (218), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:39,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 326 transitions. [2023-11-19 07:47:39,955 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 326 transitions. Word has length 133 [2023-11-19 07:47:39,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:39,956 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 326 transitions. [2023-11-19 07:47:39,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:39,957 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 326 transitions. [2023-11-19 07:47:39,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:39,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:39,959 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:39,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:40,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,175 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:40,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:40,175 INFO L85 PathProgramCache]: Analyzing trace with hash -278153005, now seen corresponding path program 1 times [2023-11-19 07:47:40,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:40,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132388969] [2023-11-19 07:47:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:40,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:40,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406533068] [2023-11-19 07:47:40,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:40,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:40,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:40,220 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:40,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:47:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:40,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:40,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:40,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:40,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:47:40,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:47:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:40,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:40,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132388969] [2023-11-19 07:47:40,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:40,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406533068] [2023-11-19 07:47:40,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406533068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:40,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:40,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:47:40,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66871629] [2023-11-19 07:47:40,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:40,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:40,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:40,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:40,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:47:40,906 INFO L87 Difference]: Start difference. First operand 226 states and 326 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:41,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:41,293 INFO L93 Difference]: Finished difference Result 446 states and 647 transitions. [2023-11-19 07:47:41,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:41,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2023-11-19 07:47:41,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:41,297 INFO L225 Difference]: With dead ends: 446 [2023-11-19 07:47:41,297 INFO L226 Difference]: Without dead ends: 273 [2023-11-19 07:47:41,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:47:41,299 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 170 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:41,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 297 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-19 07:47:41,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 229. [2023-11-19 07:47:41,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 171 states have (on average 1.286549707602339) internal successors, (220), 171 states have internal predecessors, (220), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:41,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 328 transitions. [2023-11-19 07:47:41,351 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 328 transitions. Word has length 133 [2023-11-19 07:47:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:41,352 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 328 transitions. [2023-11-19 07:47:41,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:41,353 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 328 transitions. [2023-11-19 07:47:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:41,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:41,356 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:41,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:41,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:41,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:41,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash -864959019, now seen corresponding path program 1 times [2023-11-19 07:47:41,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:41,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886560968] [2023-11-19 07:47:41,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:41,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:41,619 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:41,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636898557] [2023-11-19 07:47:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:41,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:41,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:41,627 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:41,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:47:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:41,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 07:47:41,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:42,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:47:42,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:42,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:42,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:42,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 40 [2023-11-19 07:47:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-19 07:47:42,650 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:43,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:43,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1394 treesize of output 1227 [2023-11-19 07:47:46,220 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:46,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886560968] [2023-11-19 07:47:46,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:46,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636898557] [2023-11-19 07:47:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636898557] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:46,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:46,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-19 07:47:46,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409313690] [2023-11-19 07:47:46,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:46,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:47:46,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:46,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:47:46,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-11-19 07:47:46,223 INFO L87 Difference]: Start difference. First operand 229 states and 328 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:46,674 INFO L93 Difference]: Finished difference Result 503 states and 724 transitions. [2023-11-19 07:47:46,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:46,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2023-11-19 07:47:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:46,678 INFO L225 Difference]: With dead ends: 503 [2023-11-19 07:47:46,678 INFO L226 Difference]: Without dead ends: 340 [2023-11-19 07:47:46,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=72, Invalid=199, Unknown=1, NotChecked=0, Total=272 [2023-11-19 07:47:46,680 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 280 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:46,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 270 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2023-11-19 07:47:46,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 246. [2023-11-19 07:47:46,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 188 states have (on average 1.2819148936170213) internal successors, (241), 188 states have internal predecessors, (241), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 349 transitions. [2023-11-19 07:47:46,722 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 349 transitions. Word has length 133 [2023-11-19 07:47:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:46,723 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 349 transitions. [2023-11-19 07:47:46,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 349 transitions. [2023-11-19 07:47:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:46,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:46,726 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:46,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:46,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:47:46,949 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:46,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:46,949 INFO L85 PathProgramCache]: Analyzing trace with hash -184900649, now seen corresponding path program 1 times [2023-11-19 07:47:46,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:46,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555764690] [2023-11-19 07:47:46,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:46,996 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:46,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [248029423] [2023-11-19 07:47:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:46,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:46,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:46,998 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:47,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:47:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:47,159 INFO L262 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:47,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:47,180 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 07:47:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:47,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:47,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555764690] [2023-11-19 07:47:47,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:47,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [248029423] [2023-11-19 07:47:47,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [248029423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:47,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:47,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:47,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520377857] [2023-11-19 07:47:47,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:47,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:47,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:47,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:47,462 INFO L87 Difference]: Start difference. First operand 246 states and 349 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:47,753 INFO L93 Difference]: Finished difference Result 498 states and 708 transitions. [2023-11-19 07:47:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2023-11-19 07:47:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:47,757 INFO L225 Difference]: With dead ends: 498 [2023-11-19 07:47:47,757 INFO L226 Difference]: Without dead ends: 317 [2023-11-19 07:47:47,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:47,759 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 90 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:47,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 339 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-19 07:47:47,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 258. [2023-11-19 07:47:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 200 states have (on average 1.285) internal successors, (257), 200 states have internal predecessors, (257), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:47,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 365 transitions. [2023-11-19 07:47:47,792 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 365 transitions. Word has length 133 [2023-11-19 07:47:47,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:47,793 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 365 transitions. [2023-11-19 07:47:47,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:47,793 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 365 transitions. [2023-11-19 07:47:47,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-19 07:47:47,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:47,795 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:47,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:48,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:47:48,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:48,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:48,018 INFO L85 PathProgramCache]: Analyzing trace with hash -606793581, now seen corresponding path program 1 times [2023-11-19 07:47:48,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:48,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012847328] [2023-11-19 07:47:48,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:48,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:48,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680291860] [2023-11-19 07:47:48,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:48,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:48,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:48,061 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:48,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:48,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:47:48,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:48,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 07:47:48,511 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:48,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:48,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:48,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012847328] [2023-11-19 07:47:48,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:48,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680291860] [2023-11-19 07:47:48,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680291860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:48,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:48,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:47:48,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155289944] [2023-11-19 07:47:48,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:48,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:47:48,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:48,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:47:48,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:47:48,514 INFO L87 Difference]: Start difference. First operand 258 states and 365 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:48,768 INFO L93 Difference]: Finished difference Result 485 states and 687 transitions. [2023-11-19 07:47:48,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:47:48,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 133 [2023-11-19 07:47:48,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:48,771 INFO L225 Difference]: With dead ends: 485 [2023-11-19 07:47:48,772 INFO L226 Difference]: Without dead ends: 289 [2023-11-19 07:47:48,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:47:48,773 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 47 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:48,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 340 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:47:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-19 07:47:48,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2023-11-19 07:47:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 192 states have (on average 1.2760416666666667) internal successors, (245), 192 states have internal predecessors, (245), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 353 transitions. [2023-11-19 07:47:48,805 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 353 transitions. Word has length 133 [2023-11-19 07:47:48,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:48,806 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 353 transitions. [2023-11-19 07:47:48,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:48,806 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 353 transitions. [2023-11-19 07:47:48,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-19 07:47:48,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:48,808 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:48,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:49,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:49,030 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:49,030 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:49,031 INFO L85 PathProgramCache]: Analyzing trace with hash 417983591, now seen corresponding path program 1 times [2023-11-19 07:47:49,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:49,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063020464] [2023-11-19 07:47:49,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:49,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:49,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:49,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276398124] [2023-11-19 07:47:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:49,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:49,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:49,066 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:49,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:47:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:49,240 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:47:49,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:49,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2023-11-19 07:47:49,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:49,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-11-19 07:47:49,965 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:47:49,966 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:47:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063020464] [2023-11-19 07:47:49,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276398124] [2023-11-19 07:47:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276398124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:47:49,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:47:49,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:47:49,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256715213] [2023-11-19 07:47:49,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:47:49,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:49,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:49,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:49,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:47:49,968 INFO L87 Difference]: Start difference. First operand 250 states and 353 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:50,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:50,428 INFO L93 Difference]: Finished difference Result 552 states and 779 transitions. [2023-11-19 07:47:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:47:50,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 135 [2023-11-19 07:47:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:50,432 INFO L225 Difference]: With dead ends: 552 [2023-11-19 07:47:50,432 INFO L226 Difference]: Without dead ends: 374 [2023-11-19 07:47:50,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:47:50,439 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 226 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:50,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 377 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:47:50,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-19 07:47:50,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 307. [2023-11-19 07:47:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 249 states have (on average 1.2811244979919678) internal successors, (319), 249 states have internal predecessors, (319), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 427 transitions. [2023-11-19 07:47:50,473 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 427 transitions. Word has length 135 [2023-11-19 07:47:50,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:50,481 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 427 transitions. [2023-11-19 07:47:50,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:47:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 427 transitions. [2023-11-19 07:47:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-19 07:47:50,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:50,483 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:50,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:50,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:50,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:50,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:50,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1890331904, now seen corresponding path program 1 times [2023-11-19 07:47:50,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:50,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480108714] [2023-11-19 07:47:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:50,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:50,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747312071] [2023-11-19 07:47:50,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:50,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:50,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:50,728 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:50,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:47:50,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:50,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 07:47:50,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:51,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:51,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-19 07:47:52,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:47:52,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:47:52,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:47:52,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:52,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-11-19 07:47:52,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:52,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2023-11-19 07:47:52,874 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:52,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2023-11-19 07:47:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-19 07:47:52,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:53,009 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_472 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_~#signed_char_Array_0~0.base| v_ArrVal_472) |c_~#signed_long_int_Array_0~0.base|))) (< (* (select .cse0 (+ 4 |c_~#signed_long_int_Array_0~0.offset|)) c_~last_1_signed_char_Array_0_0__1_~0) (+ (* (select .cse0 |c_~#signed_long_int_Array_0~0.offset|) c_~last_1_signed_char_Array_0_0__1_~0) c_~last_1_signed_short_int_Array_0_0_~0)))) is different from false [2023-11-19 07:47:53,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:53,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480108714] [2023-11-19 07:47:53,248 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747312071] [2023-11-19 07:47:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747312071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:53,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:53,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2023-11-19 07:47:53,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445547351] [2023-11-19 07:47:53,250 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:47:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:53,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:47:53,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=120, Unknown=1, NotChecked=22, Total=182 [2023-11-19 07:47:53,252 INFO L87 Difference]: Start difference. First operand 307 states and 427 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:54,126 INFO L93 Difference]: Finished difference Result 574 states and 796 transitions. [2023-11-19 07:47:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:54,127 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 136 [2023-11-19 07:47:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:54,130 INFO L225 Difference]: With dead ends: 574 [2023-11-19 07:47:54,130 INFO L226 Difference]: Without dead ends: 344 [2023-11-19 07:47:54,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=228, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:47:54,132 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 101 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:54,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 503 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:47:54,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2023-11-19 07:47:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 307. [2023-11-19 07:47:54,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 249 states have (on average 1.2771084337349397) internal successors, (318), 249 states have internal predecessors, (318), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 426 transitions. [2023-11-19 07:47:54,165 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 426 transitions. Word has length 136 [2023-11-19 07:47:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:54,166 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 426 transitions. [2023-11-19 07:47:54,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 426 transitions. [2023-11-19 07:47:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-19 07:47:54,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:54,168 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:54,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:47:54,383 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash 1673452204, now seen corresponding path program 1 times [2023-11-19 07:47:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217858270] [2023-11-19 07:47:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:54,420 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:54,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [201853641] [2023-11-19 07:47:54,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:54,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:54,422 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:54,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:47:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:54,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-19 07:47:54,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:54,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:54,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-19 07:47:55,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-19 07:47:55,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:47:56,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 07:47:56,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:56,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 17 [2023-11-19 07:47:56,374 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:56,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 22 [2023-11-19 07:47:56,464 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:56,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 12 [2023-11-19 07:47:56,489 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-19 07:47:56,489 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:57,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217858270] [2023-11-19 07:47:57,251 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:47:57,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201853641] [2023-11-19 07:47:57,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201853641] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:57,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:47:57,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-19 07:47:57,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616579558] [2023-11-19 07:47:57,252 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:57,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:47:57,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:57,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:47:57,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:47:57,254 INFO L87 Difference]: Start difference. First operand 307 states and 426 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:47:58,028 INFO L93 Difference]: Finished difference Result 563 states and 781 transitions. [2023-11-19 07:47:58,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:47:58,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 137 [2023-11-19 07:47:58,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:47:58,031 INFO L225 Difference]: With dead ends: 563 [2023-11-19 07:47:58,031 INFO L226 Difference]: Without dead ends: 331 [2023-11-19 07:47:58,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:47:58,033 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 109 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:47:58,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 378 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:47:58,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-11-19 07:47:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 307. [2023-11-19 07:47:58,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 249 states have (on average 1.2730923694779117) internal successors, (317), 249 states have internal predecessors, (317), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:47:58,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 425 transitions. [2023-11-19 07:47:58,065 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 425 transitions. Word has length 137 [2023-11-19 07:47:58,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:47:58,066 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 425 transitions. [2023-11-19 07:47:58,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-11-19 07:47:58,067 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 425 transitions. [2023-11-19 07:47:58,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:47:58,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:47:58,069 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:58,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:47:58,295 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:47:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -414613755, now seen corresponding path program 1 times [2023-11-19 07:47:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:58,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858166928] [2023-11-19 07:47:58,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:58,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:58,324 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:47:58,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [162835358] [2023-11-19 07:47:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:58,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:58,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:58,326 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:58,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:47:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:58,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:47:58,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:59,107 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:59,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 75 [2023-11-19 07:47:59,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:47:59,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2023-11-19 07:47:59,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:47:59,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 417 treesize of output 157 [2023-11-19 07:47:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2023-11-19 07:47:59,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:59,939 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_~#signed_char_Array_0~0.offset| 1)) (.cse4 (+ 2 |c_~#signed_char_Array_0~0.offset|)) (.cse5 (+ 3 |c_~#signed_char_Array_0~0.offset|))) (and (forall ((v_ArrVal_572 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_572) |c_~#signed_char_Array_0~0.base|))) (let ((.cse1 (mod (+ (select .cse2 |c_~#signed_char_Array_0~0.offset|) (select .cse2 .cse4) (select .cse2 .cse5)) 256)) (.cse0 (select .cse2 .cse3))) (or (= (+ 256 .cse0) .cse1) (= .cse1 .cse0))))) (forall ((v_ArrVal_572 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_572) |c_~#signed_char_Array_0~0.base|))) (let ((.cse6 (mod (+ (select .cse7 |c_~#signed_char_Array_0~0.offset|) (select .cse7 .cse4) (select .cse7 .cse5)) 256))) (or (= .cse6 (select .cse7 .cse3)) (< 127 .cse6))))) (forall ((v_ArrVal_572 (Array Int Int))) (let ((.cse9 (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_572) |c_~#signed_char_Array_0~0.base|))) (let ((.cse8 (mod (+ (select .cse9 |c_~#signed_char_Array_0~0.offset|) (select .cse9 .cse4) (select .cse9 .cse5)) 256))) (or (< .cse8 128) (not (= .cse8 (select .cse9 .cse3))))))))) is different from false [2023-11-19 07:48:00,067 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:48:00,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 565 treesize of output 319 [2023-11-19 07:48:00,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:48:00,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 473 treesize of output 277 [2023-11-19 07:48:00,100 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:48:00,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 237 treesize of output 213 [2023-11-19 07:48:00,113 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:48:00,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 213 treesize of output 185 [2023-11-19 07:48:00,125 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:48:00,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 185 treesize of output 161 [2023-11-19 07:48:00,335 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:00,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:00,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858166928] [2023-11-19 07:48:00,336 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:00,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162835358] [2023-11-19 07:48:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162835358] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:00,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:48:00,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 16 [2023-11-19 07:48:00,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041539186] [2023-11-19 07:48:00,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:00,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:00,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:00,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:00,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=172, Unknown=1, NotChecked=26, Total=240 [2023-11-19 07:48:00,339 INFO L87 Difference]: Start difference. First operand 307 states and 425 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:01,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:01,122 INFO L93 Difference]: Finished difference Result 657 states and 914 transitions. [2023-11-19 07:48:01,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:48:01,123 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-11-19 07:48:01,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:01,127 INFO L225 Difference]: With dead ends: 657 [2023-11-19 07:48:01,127 INFO L226 Difference]: Without dead ends: 434 [2023-11-19 07:48:01,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=406, Unknown=1, NotChecked=42, Total=552 [2023-11-19 07:48:01,129 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 187 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:01,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 500 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 317 Invalid, 0 Unknown, 169 Unchecked, 0.5s Time] [2023-11-19 07:48:01,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2023-11-19 07:48:01,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 361. [2023-11-19 07:48:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 303 states have (on average 1.2871287128712872) internal successors, (390), 303 states have internal predecessors, (390), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:01,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 498 transitions. [2023-11-19 07:48:01,168 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 498 transitions. Word has length 138 [2023-11-19 07:48:01,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:01,168 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 498 transitions. [2023-11-19 07:48:01,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:01,169 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 498 transitions. [2023-11-19 07:48:01,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:01,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:01,171 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:01,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:01,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:48:01,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:01,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 265444615, now seen corresponding path program 1 times [2023-11-19 07:48:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187534215] [2023-11-19 07:48:01,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:01,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:01,419 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:01,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684184250] [2023-11-19 07:48:01,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:01,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:01,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:01,421 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:01,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:48:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:01,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:01,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:02,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:02,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:02,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:48:02,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:48:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:02,281 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:02,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:02,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187534215] [2023-11-19 07:48:02,281 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:02,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684184250] [2023-11-19 07:48:02,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684184250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:02,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:02,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:02,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853321101] [2023-11-19 07:48:02,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:02,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:02,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:02,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:02,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:02,283 INFO L87 Difference]: Start difference. First operand 361 states and 498 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:02,726 INFO L93 Difference]: Finished difference Result 728 states and 1013 transitions. [2023-11-19 07:48:02,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-11-19 07:48:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:02,730 INFO L225 Difference]: With dead ends: 728 [2023-11-19 07:48:02,731 INFO L226 Difference]: Without dead ends: 454 [2023-11-19 07:48:02,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:02,732 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 127 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:02,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 296 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:02,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-19 07:48:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 361. [2023-11-19 07:48:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 303 states have (on average 1.2772277227722773) internal successors, (387), 303 states have internal predecessors, (387), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:02,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 495 transitions. [2023-11-19 07:48:02,767 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 495 transitions. Word has length 138 [2023-11-19 07:48:02,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:02,768 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 495 transitions. [2023-11-19 07:48:02,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:02,768 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 495 transitions. [2023-11-19 07:48:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:02,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:02,770 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:02,792 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:02,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:48:02,983 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:02,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -2103557497, now seen corresponding path program 1 times [2023-11-19 07:48:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:02,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341986747] [2023-11-19 07:48:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:03,012 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:03,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [894953628] [2023-11-19 07:48:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:03,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:03,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:03,014 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:03,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:48:03,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:03,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:03,204 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:03,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:03,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:48:03,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:48:03,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:48:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:03,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:03,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:03,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341986747] [2023-11-19 07:48:03,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:03,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894953628] [2023-11-19 07:48:03,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894953628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:03,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:03,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:03,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816501739] [2023-11-19 07:48:03,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:03,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:48:03,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:03,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:48:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:48:03,786 INFO L87 Difference]: Start difference. First operand 361 states and 495 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:04,222 INFO L93 Difference]: Finished difference Result 721 states and 1002 transitions. [2023-11-19 07:48:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 138 [2023-11-19 07:48:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:04,227 INFO L225 Difference]: With dead ends: 721 [2023-11-19 07:48:04,227 INFO L226 Difference]: Without dead ends: 447 [2023-11-19 07:48:04,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:04,229 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 129 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:04,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 285 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:04,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2023-11-19 07:48:04,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 363. [2023-11-19 07:48:04,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 305 states have (on average 1.2721311475409836) internal successors, (388), 305 states have internal predecessors, (388), 54 states have call successors, (54), 3 states have call predecessors, (54), 3 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2023-11-19 07:48:04,288 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 138 [2023-11-19 07:48:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:04,289 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2023-11-19 07:48:04,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2023-11-19 07:48:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-11-19 07:48:04,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:04,292 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:04,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:04,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:48:04,515 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:04,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1423499127, now seen corresponding path program 1 times [2023-11-19 07:48:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315174673] [2023-11-19 07:48:04,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:04,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:04,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:04,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891027193] [2023-11-19 07:48:04,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:04,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:04,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:04,550 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:04,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:48:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:04,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 07:48:04,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:04,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-19 07:48:05,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2023-11-19 07:48:05,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:05,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:48:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:06,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:48:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 235 proven. 143 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-19 07:48:06,262 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:06,319 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_714 (Array Int Int))) (< c_~last_1_signed_char_Array_0_0__1_~0 (select (select (store |c_#memory_int| |c_~#signed_short_int_Array_0~0.base| v_ArrVal_714) |c_~#signed_long_int_Array_0~0.base|) |c_~#signed_long_int_Array_0~0.offset|))) is different from false [2023-11-19 07:48:06,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315174673] [2023-11-19 07:48:06,325 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:06,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891027193] [2023-11-19 07:48:06,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891027193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:48:06,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:48:06,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-11-19 07:48:06,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849068293] [2023-11-19 07:48:06,326 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:06,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:48:06,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:48:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=102, Unknown=1, NotChecked=20, Total=156 [2023-11-19 07:48:06,328 INFO L87 Difference]: Start difference. First operand 363 states and 496 transitions. Second operand has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 07:48:07,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:07,101 INFO L93 Difference]: Finished difference Result 651 states and 894 transitions. [2023-11-19 07:48:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:48:07,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 138 [2023-11-19 07:48:07,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:07,104 INFO L225 Difference]: With dead ends: 651 [2023-11-19 07:48:07,104 INFO L226 Difference]: Without dead ends: 365 [2023-11-19 07:48:07,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=232, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:48:07,106 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 129 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:07,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 321 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:48:07,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-11-19 07:48:07,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 353. [2023-11-19 07:48:07,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 294 states have (on average 1.2755102040816326) internal successors, (375), 294 states have internal predecessors, (375), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 483 transitions. [2023-11-19 07:48:07,140 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 483 transitions. Word has length 138 [2023-11-19 07:48:07,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:07,140 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 483 transitions. [2023-11-19 07:48:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 07:48:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 483 transitions. [2023-11-19 07:48:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 07:48:07,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:07,142 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:07,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:07,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:48:07,358 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:07,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:07,358 INFO L85 PathProgramCache]: Analyzing trace with hash -611585728, now seen corresponding path program 1 times [2023-11-19 07:48:07,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:07,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427873499] [2023-11-19 07:48:07,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:07,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:07,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1743608047] [2023-11-19 07:48:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:07,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:07,407 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:07,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:48:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:07,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:48:07,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:07,613 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:07,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427873499] [2023-11-19 07:48:07,614 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:07,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743608047] [2023-11-19 07:48:07,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743608047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:07,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:07,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:48:07,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561344086] [2023-11-19 07:48:07,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:48:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:48:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:07,616 INFO L87 Difference]: Start difference. First operand 353 states and 483 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:07,651 INFO L93 Difference]: Finished difference Result 630 states and 872 transitions. [2023-11-19 07:48:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:48:07,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-11-19 07:48:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:07,654 INFO L225 Difference]: With dead ends: 630 [2023-11-19 07:48:07,655 INFO L226 Difference]: Without dead ends: 362 [2023-11-19 07:48:07,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:48:07,656 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 6 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:07,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 221 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:07,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-19 07:48:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 356. [2023-11-19 07:48:07,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 297 states have (on average 1.2727272727272727) internal successors, (378), 297 states have internal predecessors, (378), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 486 transitions. [2023-11-19 07:48:07,693 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 486 transitions. Word has length 140 [2023-11-19 07:48:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:07,695 INFO L495 AbstractCegarLoop]: Abstraction has 356 states and 486 transitions. [2023-11-19 07:48:07,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 486 transitions. [2023-11-19 07:48:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-19 07:48:07,697 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:07,697 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:07,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:48:07,912 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:07,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1420932354, now seen corresponding path program 1 times [2023-11-19 07:48:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:07,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056273849] [2023-11-19 07:48:07,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:07,957 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:07,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539132417] [2023-11-19 07:48:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:07,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:07,966 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:07,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:48:08,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,188 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:48:08,191 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:08,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:08,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056273849] [2023-11-19 07:48:08,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:08,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539132417] [2023-11-19 07:48:08,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539132417] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:08,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:08,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:48:08,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144362479] [2023-11-19 07:48:08,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:08,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:48:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:08,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:48:08,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:48:08,244 INFO L87 Difference]: Start difference. First operand 356 states and 486 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:08,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:08,355 INFO L93 Difference]: Finished difference Result 518 states and 714 transitions. [2023-11-19 07:48:08,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:08,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 140 [2023-11-19 07:48:08,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:08,360 INFO L225 Difference]: With dead ends: 518 [2023-11-19 07:48:08,360 INFO L226 Difference]: Without dead ends: 516 [2023-11-19 07:48:08,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:48:08,361 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 57 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:08,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1011 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:08,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-19 07:48:08,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 366. [2023-11-19 07:48:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 307 states have (on average 1.263843648208469) internal successors, (388), 307 states have internal predecessors, (388), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:08,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 496 transitions. [2023-11-19 07:48:08,406 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 496 transitions. Word has length 140 [2023-11-19 07:48:08,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:08,406 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 496 transitions. [2023-11-19 07:48:08,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:08,407 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 496 transitions. [2023-11-19 07:48:08,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2023-11-19 07:48:08,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:08,408 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:08,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:08,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:48:08,627 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:08,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:08,628 INFO L85 PathProgramCache]: Analyzing trace with hash 984376857, now seen corresponding path program 1 times [2023-11-19 07:48:08,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:08,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821488937] [2023-11-19 07:48:08,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:08,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:08,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [538455144] [2023-11-19 07:48:08,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:08,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:08,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:08,657 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:08,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-19 07:48:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:08,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:08,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2023-11-19 07:48:08,924 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:08,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:08,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821488937] [2023-11-19 07:48:08,925 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:08,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538455144] [2023-11-19 07:48:08,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538455144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:08,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:08,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:48:08,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360471053] [2023-11-19 07:48:08,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:08,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:48:08,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:08,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:48:08,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:48:08,927 INFO L87 Difference]: Start difference. First operand 366 states and 496 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:09,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:09,099 INFO L93 Difference]: Finished difference Result 530 states and 726 transitions. [2023-11-19 07:48:09,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:48:09,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 142 [2023-11-19 07:48:09,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:09,104 INFO L225 Difference]: With dead ends: 530 [2023-11-19 07:48:09,104 INFO L226 Difference]: Without dead ends: 528 [2023-11-19 07:48:09,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:48:09,105 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 61 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:09,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1183 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:48:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2023-11-19 07:48:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 368. [2023-11-19 07:48:09,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 309 states have (on average 1.2621359223300972) internal successors, (390), 309 states have internal predecessors, (390), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 498 transitions. [2023-11-19 07:48:09,143 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 498 transitions. Word has length 142 [2023-11-19 07:48:09,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:09,144 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 498 transitions. [2023-11-19 07:48:09,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:09,144 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 498 transitions. [2023-11-19 07:48:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-19 07:48:09,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:09,147 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:09,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:09,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:48:09,357 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:09,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1501360601, now seen corresponding path program 1 times [2023-11-19 07:48:09,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:09,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103823940] [2023-11-19 07:48:09,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:09,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:09,393 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:09,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [471067256] [2023-11-19 07:48:09,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:09,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:09,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:09,395 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:09,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-19 07:48:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:09,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:09,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:10,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:10,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:10,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:48:10,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2023-11-19 07:48:10,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:10,716 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_942 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_942) |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|) (+ 1 |c_ULTIMATE.start_step_#t~ite19#1|))) is different from false [2023-11-19 07:48:10,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 07:48:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2564 trivial. 1 not checked. [2023-11-19 07:48:11,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103823940] [2023-11-19 07:48:11,057 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:11,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471067256] [2023-11-19 07:48:11,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471067256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:11,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:11,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-11-19 07:48:11,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154397259] [2023-11-19 07:48:11,058 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:11,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:11,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:11,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:11,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2023-11-19 07:48:11,060 INFO L87 Difference]: Start difference. First operand 368 states and 498 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:11,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:11,500 INFO L93 Difference]: Finished difference Result 638 states and 868 transitions. [2023-11-19 07:48:11,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 268 [2023-11-19 07:48:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:11,507 INFO L225 Difference]: With dead ends: 638 [2023-11-19 07:48:11,507 INFO L226 Difference]: Without dead ends: 478 [2023-11-19 07:48:11,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 527 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=74, Unknown=1, NotChecked=18, Total=132 [2023-11-19 07:48:11,508 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 95 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:11,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 307 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 172 Unchecked, 0.4s Time] [2023-11-19 07:48:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-19 07:48:11,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 368. [2023-11-19 07:48:11,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 309 states have (on average 1.2621359223300972) internal successors, (390), 309 states have internal predecessors, (390), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:11,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 498 transitions. [2023-11-19 07:48:11,549 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 498 transitions. Word has length 268 [2023-11-19 07:48:11,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:11,549 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 498 transitions. [2023-11-19 07:48:11,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:11,550 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 498 transitions. [2023-11-19 07:48:11,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-19 07:48:11,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:11,553 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:11,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:11,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:11,776 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:11,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:11,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1923253533, now seen corresponding path program 1 times [2023-11-19 07:48:11,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:11,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728424585] [2023-11-19 07:48:11,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:11,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:11,818 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:11,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1588811098] [2023-11-19 07:48:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:11,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:11,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:11,819 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:11,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-19 07:48:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:12,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 07:48:12,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:13,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:13,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:13,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2023-11-19 07:48:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2564 trivial. 0 not checked. [2023-11-19 07:48:13,263 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:13,299 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1035 (Array Int Int))) (< |c_ULTIMATE.start_step_#t~ite19#1| (+ (select (select (store |c_#memory_int| |c_~#signed_long_int_Array_0~0.base| v_ArrVal_1035) |c_~#signed_short_int_Array_0~0.base|) |c_~#signed_short_int_Array_0~0.offset|) 1))) is different from false [2023-11-19 07:48:13,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2023-11-19 07:48:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 2564 trivial. 1 not checked. [2023-11-19 07:48:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728424585] [2023-11-19 07:48:13,605 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:13,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588811098] [2023-11-19 07:48:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588811098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:13,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-11-19 07:48:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703583621] [2023-11-19 07:48:13,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:13,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:13,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2023-11-19 07:48:13,608 INFO L87 Difference]: Start difference. First operand 368 states and 498 transitions. Second operand has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:14,053 INFO L93 Difference]: Finished difference Result 638 states and 871 transitions. [2023-11-19 07:48:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:48:14,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 268 [2023-11-19 07:48:14,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:14,059 INFO L225 Difference]: With dead ends: 638 [2023-11-19 07:48:14,059 INFO L226 Difference]: Without dead ends: 478 [2023-11-19 07:48:14,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 526 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=74, Unknown=1, NotChecked=18, Total=132 [2023-11-19 07:48:14,061 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 150 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:14,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 331 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 173 Unchecked, 0.4s Time] [2023-11-19 07:48:14,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-19 07:48:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 371. [2023-11-19 07:48:14,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 312 states have internal predecessors, (393), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:14,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 501 transitions. [2023-11-19 07:48:14,099 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 501 transitions. Word has length 268 [2023-11-19 07:48:14,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:14,099 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 501 transitions. [2023-11-19 07:48:14,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.88888888888889) internal successors, (125), 9 states have internal predecessors, (125), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:14,100 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 501 transitions. [2023-11-19 07:48:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-19 07:48:14,102 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:14,103 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:14,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:14,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:14,315 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:14,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:14,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1243195163, now seen corresponding path program 1 times [2023-11-19 07:48:14,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:14,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717790884] [2023-11-19 07:48:14,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:14,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:14,373 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:14,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1718939530] [2023-11-19 07:48:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:14,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:14,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:14,376 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:14,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-19 07:48:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:14,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 746 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:48:14,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:15,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:15,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 28 [2023-11-19 07:48:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2023-11-19 07:48:15,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:15,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-19 07:48:16,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2023-11-19 07:48:16,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717790884] [2023-11-19 07:48:16,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718939530] [2023-11-19 07:48:16,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718939530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:16,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:16,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2023-11-19 07:48:16,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819438061] [2023-11-19 07:48:16,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:16,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:48:16,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:16,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:48:16,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:48:16,116 INFO L87 Difference]: Start difference. First operand 371 states and 501 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:16,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:16,633 INFO L93 Difference]: Finished difference Result 804 states and 1092 transitions. [2023-11-19 07:48:16,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:48:16,634 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 268 [2023-11-19 07:48:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:16,641 INFO L225 Difference]: With dead ends: 804 [2023-11-19 07:48:16,641 INFO L226 Difference]: Without dead ends: 519 [2023-11-19 07:48:16,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:48:16,644 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 127 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:16,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 483 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:48:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-11-19 07:48:16,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 371. [2023-11-19 07:48:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 312 states have (on average 1.2596153846153846) internal successors, (393), 312 states have internal predecessors, (393), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:16,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 501 transitions. [2023-11-19 07:48:16,686 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 501 transitions. Word has length 268 [2023-11-19 07:48:16,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:16,687 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 501 transitions. [2023-11-19 07:48:16,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 9 states have internal predecessors, (127), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:16,688 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 501 transitions. [2023-11-19 07:48:16,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2023-11-19 07:48:16,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:16,690 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:16,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:16,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:16,903 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:16,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:16,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2088166615, now seen corresponding path program 1 times [2023-11-19 07:48:16,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:16,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63934192] [2023-11-19 07:48:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:16,969 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:16,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190029] [2023-11-19 07:48:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:16,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:16,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:16,971 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:16,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-19 07:48:17,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:17,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 07:48:17,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:18,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:18,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:48:18,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-19 07:48:18,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 2563 trivial. 0 not checked. [2023-11-19 07:48:18,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:48:18,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2023-11-19 07:48:20,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2575 backedges. 7 proven. 4 refuted. 1 times theorem prover too weak. 2563 trivial. 0 not checked. [2023-11-19 07:48:20,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63934192] [2023-11-19 07:48:20,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190029] [2023-11-19 07:48:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190029] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:48:20,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:48:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-19 07:48:20,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336397049] [2023-11-19 07:48:20,606 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:48:20,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:48:20,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:48:20,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=98, Unknown=3, NotChecked=0, Total=132 [2023-11-19 07:48:20,609 INFO L87 Difference]: Start difference. First operand 371 states and 501 transitions. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:21,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:21,363 INFO L93 Difference]: Finished difference Result 836 states and 1121 transitions. [2023-11-19 07:48:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:48:21,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) Word has length 268 [2023-11-19 07:48:21,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:21,370 INFO L225 Difference]: With dead ends: 836 [2023-11-19 07:48:21,370 INFO L226 Difference]: Without dead ends: 551 [2023-11-19 07:48:21,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 524 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=97, Invalid=280, Unknown=3, NotChecked=0, Total=380 [2023-11-19 07:48:21,372 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 231 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:21,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 378 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:48:21,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-19 07:48:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 362. [2023-11-19 07:48:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 303 states have (on average 1.2376237623762376) internal successors, (375), 303 states have internal predecessors, (375), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:21,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 483 transitions. [2023-11-19 07:48:21,436 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 483 transitions. Word has length 268 [2023-11-19 07:48:21,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:21,437 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 483 transitions. [2023-11-19 07:48:21,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 2 states have call successors, (36), 2 states have call predecessors, (36), 2 states have return successors, (36), 2 states have call predecessors, (36), 2 states have call successors, (36) [2023-11-19 07:48:21,437 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 483 transitions. [2023-11-19 07:48:21,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2023-11-19 07:48:21,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:21,440 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:21,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-19 07:48:21,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:21,655 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:21,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:21,656 INFO L85 PathProgramCache]: Analyzing trace with hash -216842223, now seen corresponding path program 1 times [2023-11-19 07:48:21,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:21,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808827579] [2023-11-19 07:48:21,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:21,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:21,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723117425] [2023-11-19 07:48:21,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:21,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:21,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:21,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:21,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-19 07:48:22,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:22,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:48:22,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2577 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2566 trivial. 0 not checked. [2023-11-19 07:48:22,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:48:22,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:48:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808827579] [2023-11-19 07:48:22,054 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:48:22,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723117425] [2023-11-19 07:48:22,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723117425] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:48:22,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:48:22,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:48:22,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081926993] [2023-11-19 07:48:22,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:48:22,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:48:22,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:48:22,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:48:22,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:22,057 INFO L87 Difference]: Start difference. First operand 362 states and 483 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:22,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:48:22,135 INFO L93 Difference]: Finished difference Result 748 states and 997 transitions. [2023-11-19 07:48:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:48:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) Word has length 270 [2023-11-19 07:48:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:48:22,139 INFO L225 Difference]: With dead ends: 748 [2023-11-19 07:48:22,139 INFO L226 Difference]: Without dead ends: 472 [2023-11-19 07:48:22,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:48:22,141 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:48:22,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 437 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:48:22,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-11-19 07:48:22,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 401. [2023-11-19 07:48:22,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 342 states have (on average 1.2222222222222223) internal successors, (418), 342 states have internal predecessors, (418), 54 states have call successors, (54), 4 states have call predecessors, (54), 4 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-19 07:48:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 526 transitions. [2023-11-19 07:48:22,180 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 526 transitions. Word has length 270 [2023-11-19 07:48:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:48:22,180 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 526 transitions. [2023-11-19 07:48:22,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 1 states have call predecessors, (18), 1 states have call successors, (18) [2023-11-19 07:48:22,181 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 526 transitions. [2023-11-19 07:48:22,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2023-11-19 07:48:22,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:48:22,184 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:48:22,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-19 07:48:22,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:22,397 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:48:22,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:48:22,398 INFO L85 PathProgramCache]: Analyzing trace with hash 506409008, now seen corresponding path program 1 times [2023-11-19 07:48:22,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:48:22,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656084709] [2023-11-19 07:48:22,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:48:22,457 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:48:22,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083604519] [2023-11-19 07:48:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:48:22,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:48:22,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:48:22,460 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:48:22,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ac98e0c-592f-4ce2-87d3-a685fd4e3ac0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-19 07:48:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:48:22,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 763 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-19 07:48:22,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:48:22,979 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:22,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,256 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2023-11-19 07:48:23,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:48:23,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:48:23,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13