./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/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_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/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_3ca65c07-bcab-4872-b942-c75a1cc55189/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 5e929c4003dd56b80bb766773f31b5c9376f023636b5de2c888cd8fd3433b56e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:47,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:47,336 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:55:47,342 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:47,343 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:47,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:47,372 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:47,372 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:47,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:47,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:47,375 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:47,375 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:47,376 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:47,377 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:47,377 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:47,378 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:47,379 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:47,379 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:47,380 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:47,380 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:47,381 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:47,381 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:47,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:47,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:47,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:47,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:47,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:47,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:47,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:47,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:47,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:47,387 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:47,387 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:47,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:47,388 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:47,389 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:47,389 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:47,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:47,390 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:47,391 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_3ca65c07-bcab-4872-b942-c75a1cc55189/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5e929c4003dd56b80bb766773f31b5c9376f023636b5de2c888cd8fd3433b56e [2023-11-19 07:55:47,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:47,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:47,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:47,795 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:47,796 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:47,797 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i [2023-11-19 07:55:51,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:51,355 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:51,356 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i [2023-11-19 07:55:51,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/data/cff2dfd23/01faa5b8252b418c8c57bd930591390f/FLAGea463d2b7 [2023-11-19 07:55:51,389 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/data/cff2dfd23/01faa5b8252b418c8c57bd930591390f [2023-11-19 07:55:51,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:51,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:51,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:51,403 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:51,409 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:51,410 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,413 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79d91469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51, skipping insertion in model container [2023-11-19 07:55:51,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,455 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:51,639 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_3ca65c07-bcab-4872-b942-c75a1cc55189/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i[916,929] [2023-11-19 07:55:51,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:51,719 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:51,737 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_3ca65c07-bcab-4872-b942-c75a1cc55189/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-p_file-85.i[916,929] [2023-11-19 07:55:51,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:51,800 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:51,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51 WrapperNode [2023-11-19 07:55:51,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:51,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:51,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:51,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:51,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,919 INFO L138 Inliner]: procedures = 26, calls = 190, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 498 [2023-11-19 07:55:51,923 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:51,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:51,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:51,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:51,934 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,934 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,954 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,955 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:51,986 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,012 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,016 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,023 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:52,024 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:52,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:52,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:52,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (1/1) ... [2023-11-19 07:55:52,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:52,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:52,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:52,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:55:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:55:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:55:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:52,294 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:52,296 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:53,094 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:53,105 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:53,105 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:55:53,111 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:53 BoogieIcfgContainer [2023-11-19 07:55:53,111 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:53,115 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:53,115 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:53,119 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:53,120 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:51" (1/3) ... [2023-11-19 07:55:53,121 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275aa8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:53, skipping insertion in model container [2023-11-19 07:55:53,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:51" (2/3) ... [2023-11-19 07:55:53,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@275aa8ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:53, skipping insertion in model container [2023-11-19 07:55:53,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:53" (3/3) ... [2023-11-19 07:55:53,124 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-p_file-85.i [2023-11-19 07:55:53,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:53,149 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:55:53,215 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:55:53,223 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;@59ff433e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:55:53,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:55:53,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:55:53,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:55:53,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:53,260 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:53,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:53,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:53,279 INFO L85 PathProgramCache]: Analyzing trace with hash 809731980, now seen corresponding path program 1 times [2023-11-19 07:55:53,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:53,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297204575] [2023-11-19 07:55:53,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:53,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:53,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:53,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:55:53,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297204575] [2023-11-19 07:55:53,700 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 07:55:53,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316788650] [2023-11-19 07:55:53,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:53,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:53,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:53,703 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:53,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:55:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:53,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 07:55:54,010 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2023-11-19 07:55:54,102 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:55:54,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316788650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:55:54,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:55:54,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:55:54,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711809631] [2023-11-19 07:55:54,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:55:54,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:55:54,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:55:54,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:55:54,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:54,191 INFO L87 Difference]: Start difference. First operand has 131 states, 105 states have (on average 1.380952380952381) internal successors, (145), 106 states have internal predecessors, (145), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 07:55:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:55:54,249 INFO L93 Difference]: Finished difference Result 255 states and 399 transitions. [2023-11-19 07:55:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:55:54,253 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) Word has length 179 [2023-11-19 07:55:54,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:55:54,262 INFO L225 Difference]: With dead ends: 255 [2023-11-19 07:55:54,262 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 07:55:54,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:55:54,276 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:55:54,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:55:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 07:55:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2023-11-19 07:55:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.3529411764705883) internal successors, (138), 102 states have internal predecessors, (138), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:55:54,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2023-11-19 07:55:54,336 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 179 [2023-11-19 07:55:54,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:55:54,340 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2023-11-19 07:55:54,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 2 states have call successors, (23) [2023-11-19 07:55:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2023-11-19 07:55:54,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:55:54,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:55:54,349 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:55:54,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:55:54,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:55:54,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:55:54,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:55:54,571 INFO L85 PathProgramCache]: Analyzing trace with hash 949240606, now seen corresponding path program 1 times [2023-11-19 07:55:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:55:54,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169486720] [2023-11-19 07:55:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:54,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:55:54,690 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:55:54,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232560386] [2023-11-19 07:55:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:55:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:55:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:54,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:55:54,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:55:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:55:55,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 07:55:55,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:55:57,753 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 11 treesize of output 7 [2023-11-19 07:55:57,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:57,873 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 07:55:57,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:57,962 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 07:55:58,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:58,007 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 07:55:58,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:58,063 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 07:55:58,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:55:58,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-19 07:55:58,217 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-19 07:55:58,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:55:58,571 WARN L854 $PredicateComparison]: unable to prove that (forall ((~var_1_1_Pointer~0.offset Int) (v_ArrVal_140 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| c_~var_1_13_Pointer~0.base v_ArrVal_140))) (let ((.cse1 (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256))) (= (mod (select (select (store .cse0 c_~var_1_1_Pointer~0.base (store (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ (- 4) .cse1))) c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) .cse1)))) is different from false [2023-11-19 07:55:58,618 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_139 (Array Int Int)) (~var_1_1_Pointer~0.offset Int) (v_ArrVal_140 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| c_~var_1_8_Pointer~0.base v_ArrVal_139) c_~var_1_13_Pointer~0.base v_ArrVal_140))) (let ((.cse1 (mod (select (select .cse0 c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256))) (= (mod (select (select (store .cse0 c_~var_1_1_Pointer~0.base (store (select .cse0 c_~var_1_1_Pointer~0.base) ~var_1_1_Pointer~0.offset (+ (- 4) .cse1))) c_~var_1_6_Pointer~0.base) c_~var_1_6_Pointer~0.offset) 256) .cse1)))) is different from false [2023-11-19 07:55:58,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:55:58,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 64 [2023-11-19 07:55:58,815 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-19 07:55:58,817 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 49986 treesize of output 47556 [2023-11-19 07:55:59,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 606 treesize of output 566 [2023-11-19 07:55:59,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 592 treesize of output 564 [2023-11-19 07:55:59,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 590 treesize of output 562 [2023-11-19 07:56:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:00,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169486720] [2023-11-19 07:56:00,154 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:00,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232560386] [2023-11-19 07:56:00,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232560386] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:00,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:00,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2023-11-19 07:56:00,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242451640] [2023-11-19 07:56:00,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:56:00,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:00,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:56:00,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=305, Unknown=2, NotChecked=74, Total=462 [2023-11-19 07:56:00,163 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:01,136 INFO L93 Difference]: Finished difference Result 333 states and 484 transitions. [2023-11-19 07:56:01,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:56:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-19 07:56:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:01,143 INFO L225 Difference]: With dead ends: 333 [2023-11-19 07:56:01,143 INFO L226 Difference]: Without dead ends: 209 [2023-11-19 07:56:01,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 334 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 2 IntricatePredicates, 1 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=527, Unknown=2, NotChecked=98, Total=756 [2023-11-19 07:56:01,152 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 374 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 596 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:01,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 693 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 309 Invalid, 0 Unknown, 596 Unchecked, 0.5s Time] [2023-11-19 07:56:01,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-19 07:56:01,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 133. [2023-11-19 07:56:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 108 states have (on average 1.3518518518518519) internal successors, (146), 108 states have internal predecessors, (146), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:01,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 192 transitions. [2023-11-19 07:56:01,190 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 192 transitions. Word has length 179 [2023-11-19 07:56:01,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:01,192 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 192 transitions. [2023-11-19 07:56:01,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 192 transitions. [2023-11-19 07:56:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:56:01,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:01,198 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:01,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:56:01,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:01,415 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:01,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -71827748, now seen corresponding path program 1 times [2023-11-19 07:56:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:01,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249199033] [2023-11-19 07:56:01,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:01,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:01,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [453094545] [2023-11-19 07:56:01,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:01,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:01,534 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:01,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:56:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:01,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:56:01,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:03,546 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 11 treesize of output 7 [2023-11-19 07:56:03,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:03,622 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 07:56:03,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:03,658 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 07:56:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:03,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:56:03,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:03,753 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 07:56:03,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:03,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:03,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:03,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249199033] [2023-11-19 07:56:03,790 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:03,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453094545] [2023-11-19 07:56:03,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453094545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:03,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:03,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 07:56:03,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388121094] [2023-11-19 07:56:03,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:03,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:56:03,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:03,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:56:03,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:56:03,795 INFO L87 Difference]: Start difference. First operand 133 states and 192 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:04,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:04,401 INFO L93 Difference]: Finished difference Result 366 states and 532 transitions. [2023-11-19 07:56:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:04,404 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 179 [2023-11-19 07:56:04,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:04,407 INFO L225 Difference]: With dead ends: 366 [2023-11-19 07:56:04,407 INFO L226 Difference]: Without dead ends: 236 [2023-11-19 07:56:04,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:56:04,409 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 503 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:04,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 544 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:56:04,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-11-19 07:56:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 155. [2023-11-19 07:56:04,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 130 states have (on average 1.3692307692307693) internal successors, (178), 130 states have internal predecessors, (178), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:04,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 224 transitions. [2023-11-19 07:56:04,450 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 224 transitions. Word has length 179 [2023-11-19 07:56:04,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:04,451 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 224 transitions. [2023-11-19 07:56:04,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:04,452 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 224 transitions. [2023-11-19 07:56:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-19 07:56:04,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:04,456 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:04,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:04,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:04,670 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:04,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:04,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1271131125, now seen corresponding path program 1 times [2023-11-19 07:56:04,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:04,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474945731] [2023-11-19 07:56:04,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:04,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:04,740 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:04,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1575466407] [2023-11-19 07:56:04,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:04,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:04,742 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:04,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:56:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:05,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 674 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:56:05,029 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:05,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:06,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:06,356 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 07:56:06,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:06,785 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 07:56:07,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:07,253 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 07:56:07,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:07,631 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 07:56:07,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:07,959 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 07:56:08,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:08,214 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 07:56:08,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:08,414 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 07:56:08,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:08,610 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 07:56:08,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:08,829 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 07:56:09,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:09,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-19 07:56:09,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 956 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 07:56:09,049 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474945731] [2023-11-19 07:56:09,131 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:09,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575466407] [2023-11-19 07:56:09,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575466407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:09,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:09,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-19 07:56:09,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429193971] [2023-11-19 07:56:09,139 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:09,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:56:09,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:56:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=243, Unknown=4, NotChecked=0, Total=342 [2023-11-19 07:56:09,143 INFO L87 Difference]: Start difference. First operand 155 states and 224 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 11 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 07:56:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:10,588 INFO L93 Difference]: Finished difference Result 317 states and 454 transitions. [2023-11-19 07:56:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:56:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 11 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) Word has length 179 [2023-11-19 07:56:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:10,593 INFO L225 Difference]: With dead ends: 317 [2023-11-19 07:56:10,594 INFO L226 Difference]: Without dead ends: 165 [2023-11-19 07:56:10,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=227, Invalid=581, Unknown=4, NotChecked=0, Total=812 [2023-11-19 07:56:10,596 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 339 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:10,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 642 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 07:56:10,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-19 07:56:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2023-11-19 07:56:10,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 1.3533834586466165) internal successors, (180), 133 states have internal predecessors, (180), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 226 transitions. [2023-11-19 07:56:10,650 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 226 transitions. Word has length 179 [2023-11-19 07:56:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:10,651 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 226 transitions. [2023-11-19 07:56:10,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 11 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 07:56:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 226 transitions. [2023-11-19 07:56:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 07:56:10,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:10,655 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:10,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:10,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:10,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:10,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1645891121, now seen corresponding path program 1 times [2023-11-19 07:56:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956887166] [2023-11-19 07:56:10,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:10,918 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [862508580] [2023-11-19 07:56:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:10,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:10,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:10,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:10,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:56:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:11,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:56:11,197 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:11,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:11,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:11,728 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 07:56:11,743 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 07:56:11,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:11,756 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956887166] [2023-11-19 07:56:11,757 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:11,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862508580] [2023-11-19 07:56:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862508580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:11,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:11,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:56:11,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863045474] [2023-11-19 07:56:11,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:11,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:11,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:11,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:11,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:11,762 INFO L87 Difference]: Start difference. First operand 159 states and 226 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:12,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:12,186 INFO L93 Difference]: Finished difference Result 394 states and 564 transitions. [2023-11-19 07:56:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:12,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 07:56:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:12,193 INFO L225 Difference]: With dead ends: 394 [2023-11-19 07:56:12,193 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 07:56:12,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:56:12,199 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 430 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:12,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 433 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:56:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 07:56:12,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2023-11-19 07:56:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 135 states have internal predecessors, (180), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:12,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 226 transitions. [2023-11-19 07:56:12,244 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 226 transitions. Word has length 181 [2023-11-19 07:56:12,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:12,245 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 226 transitions. [2023-11-19 07:56:12,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:12,246 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 226 transitions. [2023-11-19 07:56:12,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 07:56:12,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:12,250 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:12,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:12,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:12,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:12,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1328749556, now seen corresponding path program 1 times [2023-11-19 07:56:12,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:12,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871759844] [2023-11-19 07:56:12,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:12,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:12,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [820503117] [2023-11-19 07:56:12,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:12,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:12,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:12,516 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:12,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:56:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:12,791 INFO L262 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:12,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:12,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:12,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:12,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:12,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871759844] [2023-11-19 07:56:12,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:12,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820503117] [2023-11-19 07:56:12,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820503117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:12,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:12,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:56:12,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519219103] [2023-11-19 07:56:12,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:12,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:56:12,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:12,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:56:12,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:56:12,820 INFO L87 Difference]: Start difference. First operand 161 states and 226 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:12,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:12,901 INFO L93 Difference]: Finished difference Result 323 states and 454 transitions. [2023-11-19 07:56:12,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:12,903 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 07:56:12,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:12,906 INFO L225 Difference]: With dead ends: 323 [2023-11-19 07:56:12,906 INFO L226 Difference]: Without dead ends: 165 [2023-11-19 07:56:12,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:12,908 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 6 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:12,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 707 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:56:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-19 07:56:12,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2023-11-19 07:56:12,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 138 states have (on average 1.326086956521739) internal successors, (183), 138 states have internal predecessors, (183), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:12,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 229 transitions. [2023-11-19 07:56:12,944 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 229 transitions. Word has length 181 [2023-11-19 07:56:12,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:12,945 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 229 transitions. [2023-11-19 07:56:12,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:12,945 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 229 transitions. [2023-11-19 07:56:12,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 07:56:12,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:12,949 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:12,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:13,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:56:13,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:13,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:13,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1256362998, now seen corresponding path program 1 times [2023-11-19 07:56:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:13,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247882889] [2023-11-19 07:56:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:13,218 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:13,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429590274] [2023-11-19 07:56:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:13,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:13,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:13,220 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:13,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:56:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:13,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 07:56:13,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:15,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:15,118 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 07:56:15,147 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 07:56:15,174 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 07:56:15,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:15,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-19 07:56:15,246 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-19 07:56:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:15,269 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:15,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247882889] [2023-11-19 07:56:15,270 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:15,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429590274] [2023-11-19 07:56:15,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429590274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:15,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:15,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:56:15,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079844649] [2023-11-19 07:56:15,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:15,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:56:15,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:15,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:56:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:56:15,274 INFO L87 Difference]: Start difference. First operand 164 states and 229 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:15,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:15,787 INFO L93 Difference]: Finished difference Result 399 states and 562 transitions. [2023-11-19 07:56:15,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:15,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 07:56:15,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:15,790 INFO L225 Difference]: With dead ends: 399 [2023-11-19 07:56:15,790 INFO L226 Difference]: Without dead ends: 238 [2023-11-19 07:56:15,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:56:15,792 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 434 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:15,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 487 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:56:15,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-19 07:56:15,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2023-11-19 07:56:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 135 states have (on average 1.325925925925926) internal successors, (179), 135 states have internal predecessors, (179), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:15,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 225 transitions. [2023-11-19 07:56:15,813 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 225 transitions. Word has length 181 [2023-11-19 07:56:15,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:15,814 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 225 transitions. [2023-11-19 07:56:15,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:15,814 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 225 transitions. [2023-11-19 07:56:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 07:56:15,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:15,817 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:15,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-19 07:56:16,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:16,039 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:16,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:16,040 INFO L85 PathProgramCache]: Analyzing trace with hash 588487610, now seen corresponding path program 1 times [2023-11-19 07:56:16,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:16,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476776041] [2023-11-19 07:56:16,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:16,102 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:16,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1407225006] [2023-11-19 07:56:16,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:16,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:16,104 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:16,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:56:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:16,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 07:56:16,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:17,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:18,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:18,039 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 07:56:18,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:18,072 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 07:56:18,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:18,114 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 07:56:18,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:18,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 24 [2023-11-19 07:56:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:18,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:56:18,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:18,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476776041] [2023-11-19 07:56:18,232 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:18,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407225006] [2023-11-19 07:56:18,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407225006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:18,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:18,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 07:56:18,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358038371] [2023-11-19 07:56:18,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:18,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 07:56:18,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 07:56:18,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:56:18,235 INFO L87 Difference]: Start difference. First operand 161 states and 225 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:18,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:18,966 INFO L93 Difference]: Finished difference Result 362 states and 508 transitions. [2023-11-19 07:56:18,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:18,967 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 07:56:18,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:18,969 INFO L225 Difference]: With dead ends: 362 [2023-11-19 07:56:18,969 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:56:18,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:56:18,970 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 510 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:18,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 436 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:56:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:56:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2023-11-19 07:56:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 136 states have (on average 1.3235294117647058) internal successors, (180), 136 states have internal predecessors, (180), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:18,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 226 transitions. [2023-11-19 07:56:18,996 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 226 transitions. Word has length 181 [2023-11-19 07:56:19,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:19,000 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 226 transitions. [2023-11-19 07:56:19,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 226 transitions. [2023-11-19 07:56:19,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-19 07:56:19,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:19,004 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:19,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:19,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:56:19,224 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:19,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash -432580744, now seen corresponding path program 1 times [2023-11-19 07:56:19,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:19,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455479581] [2023-11-19 07:56:19,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:19,296 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:19,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [335625165] [2023-11-19 07:56:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:19,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:19,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:19,298 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:19,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:56:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:19,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-19 07:56:19,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:21,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:56:21,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:21,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-19 07:56:21,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:21,630 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 07:56:21,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:21,660 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 07:56:21,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:21,705 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 07:56:21,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:21,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-11-19 07:56:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-11-19 07:56:21,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2023-11-19 07:56:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455479581] [2023-11-19 07:56:21,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:21,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335625165] [2023-11-19 07:56:21,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335625165] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:21,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:21,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2023-11-19 07:56:21,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796231461] [2023-11-19 07:56:21,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:21,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:56:21,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:56:21,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-11-19 07:56:21,965 INFO L87 Difference]: Start difference. First operand 162 states and 226 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:22,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:22,240 INFO L93 Difference]: Finished difference Result 363 states and 508 transitions. [2023-11-19 07:56:22,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:56:22,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 181 [2023-11-19 07:56:22,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:22,243 INFO L225 Difference]: With dead ends: 363 [2023-11-19 07:56:22,243 INFO L226 Difference]: Without dead ends: 204 [2023-11-19 07:56:22,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 344 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-19 07:56:22,245 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 164 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:22,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 879 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:56:22,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-19 07:56:22,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2023-11-19 07:56:22,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 136 states have (on average 1.3235294117647058) internal successors, (180), 136 states have internal predecessors, (180), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 226 transitions. [2023-11-19 07:56:22,266 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 226 transitions. Word has length 181 [2023-11-19 07:56:22,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:22,266 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 226 transitions. [2023-11-19 07:56:22,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2023-11-19 07:56:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 226 transitions. [2023-11-19 07:56:22,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 07:56:22,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:22,269 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:22,294 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:22,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:22,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:22,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:22,491 INFO L85 PathProgramCache]: Analyzing trace with hash 815712515, now seen corresponding path program 1 times [2023-11-19 07:56:22,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:22,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264674632] [2023-11-19 07:56:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:22,528 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:22,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029618666] [2023-11-19 07:56:22,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:22,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:22,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:22,530 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:22,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:56:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:22,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-19 07:56:22,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:23,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:24,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:24,337 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 07:56:24,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:24,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:56:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,012 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 07:56:25,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,282 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 07:56:25,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:56:25,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,692 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 07:56:25,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:56:25,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:25,989 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 07:56:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:26,161 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 07:56:26,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-19 07:56:26,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 932 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-11-19 07:56:26,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:26,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:26,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264674632] [2023-11-19 07:56:26,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:26,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029618666] [2023-11-19 07:56:26,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029618666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:26,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:26,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-19 07:56:26,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687451292] [2023-11-19 07:56:26,340 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:26,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 07:56:26,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:26,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 07:56:26,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=272, Unknown=2, NotChecked=0, Total=380 [2023-11-19 07:56:26,342 INFO L87 Difference]: Start difference. First operand 162 states and 226 transitions. Second operand has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 10 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-19 07:56:27,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:27,498 INFO L93 Difference]: Finished difference Result 330 states and 457 transitions. [2023-11-19 07:56:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:56:27,500 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 10 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) Word has length 182 [2023-11-19 07:56:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:27,502 INFO L225 Difference]: With dead ends: 330 [2023-11-19 07:56:27,502 INFO L226 Difference]: Without dead ends: 171 [2023-11-19 07:56:27,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=624, Unknown=2, NotChecked=0, Total=870 [2023-11-19 07:56:27,503 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 354 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:27,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 547 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:56:27,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-11-19 07:56:27,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2023-11-19 07:56:27,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 136 states have (on average 1.3161764705882353) internal successors, (179), 136 states have internal predecessors, (179), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:27,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2023-11-19 07:56:27,537 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 182 [2023-11-19 07:56:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:27,537 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2023-11-19 07:56:27,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.705882352941177) internal successors, (97), 15 states have internal predecessors, (97), 10 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (23), 10 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-19 07:56:27,538 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2023-11-19 07:56:27,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 07:56:27,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:27,541 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:27,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:27,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:27,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:27,756 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:27,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1428270783, now seen corresponding path program 1 times [2023-11-19 07:56:27,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:27,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304759832] [2023-11-19 07:56:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:27,798 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:27,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [625458535] [2023-11-19 07:56:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:27,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:27,800 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:27,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:56:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:28,134 INFO L262 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-19 07:56:28,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:29,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:29,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:29,815 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 07:56:30,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:30,099 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 07:56:30,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:30,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:56:30,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:30,605 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 07:56:30,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:30,777 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 07:56:30,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:30,924 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 07:56:31,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:31,037 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 07:56:31,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:31,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 07:56:31,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2023-11-19 07:56:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 892 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-11-19 07:56:31,276 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:31,329 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_817 (Array Int Int))) (= (mod (select (select (store |c_#memory_int| c_~var_1_6_Pointer~0.base v_ArrVal_817) c_~var_1_11_Pointer~0.base) c_~var_1_11_Pointer~0.offset) 256) 0)) is different from false [2023-11-19 07:56:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304759832] [2023-11-19 07:56:31,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:56:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625458535] [2023-11-19 07:56:31,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625458535] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:31,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:56:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-11-19 07:56:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089506962] [2023-11-19 07:56:31,347 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:31,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:56:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:31,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:56:31,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=294, Unknown=1, NotChecked=36, Total=420 [2023-11-19 07:56:31,349 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 16 states have internal predecessors, (94), 9 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-19 07:56:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:56:32,646 INFO L93 Difference]: Finished difference Result 318 states and 432 transitions. [2023-11-19 07:56:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:56:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 16 states have internal predecessors, (94), 9 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) Word has length 182 [2023-11-19 07:56:32,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:56:32,649 INFO L225 Difference]: With dead ends: 318 [2023-11-19 07:56:32,649 INFO L226 Difference]: Without dead ends: 158 [2023-11-19 07:56:32,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=742, Unknown=1, NotChecked=60, Total=1056 [2023-11-19 07:56:32,651 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 185 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 848 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:56:32,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 879 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 848 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:56:32,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2023-11-19 07:56:32,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 148. [2023-11-19 07:56:32,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 120 states have (on average 1.275) internal successors, (153), 120 states have internal predecessors, (153), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-19 07:56:32,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 199 transitions. [2023-11-19 07:56:32,677 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 199 transitions. Word has length 182 [2023-11-19 07:56:32,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:56:32,678 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 199 transitions. [2023-11-19 07:56:32,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.222222222222222) internal successors, (94), 16 states have internal predecessors, (94), 9 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (23), 9 states have call predecessors, (23), 9 states have call successors, (23) [2023-11-19 07:56:32,679 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 199 transitions. [2023-11-19 07:56:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-19 07:56:32,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:56:32,681 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:56:32,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:32,898 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:56:32,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -726670909, now seen corresponding path program 1 times [2023-11-19 07:56:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:32,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478630962] [2023-11-19 07:56:32,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:32,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:32,968 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:56:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914528724] [2023-11-19 07:56:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:32,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:32,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:32,970 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:33,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca65c07-bcab-4872-b942-c75a1cc55189/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:56:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:33,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-19 07:56:33,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:35,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:56:36,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:36,548 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 07:56:37,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:37,050 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 07:56:37,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:37,478 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 07:56:37,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:37,908 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 07:56:38,266 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:38,266 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 07:56:38,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:38,612 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 07:56:39,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,069 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 07:56:39,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-19 07:56:39,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,397 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 51 treesize of output 45 [2023-11-19 07:56:39,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 35 [2023-11-19 07:56:39,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 11 [2023-11-19 07:56:39,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,602 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 07:56:39,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 37 [2023-11-19 07:56:39,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-11-19 07:56:39,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:56:39,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-11-19 07:56:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 0 proven. 836 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-19 07:56:39,898 INFO L327 TraceCheckSpWp]: Computing backward predicates...