./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s42if.c --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_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/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_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s42if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/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_4e17e211-0652-4e06-b415-c319cc0c9cd0/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 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:59:32,167 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:59:32,247 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:59:32,252 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:59:32,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:59:32,280 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:59:32,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:59:32,281 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:59:32,282 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:59:32,283 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:59:32,284 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:59:32,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:59:32,285 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:59:32,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:59:32,286 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:59:32,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:59:32,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:59:32,288 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:59:32,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:59:32,289 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:59:32,289 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:59:32,290 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:59:32,290 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:59:32,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:59:32,291 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:59:32,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:59:32,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:59:32,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:59:32,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:32,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:59:32,294 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:59:32,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:59:32,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:59:32,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:59:32,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:59:32,296 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:59:32,297 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:59:32,297 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:59:32,298 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:59:32,298 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_4e17e211-0652-4e06-b415-c319cc0c9cd0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a409beec5345d23de858b9cfc2d898f0f9067f3e0e10973225e4b6022343f4a [2023-11-19 07:59:32,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:59:32,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:59:32,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:59:32,564 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:59:32,565 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:59:32,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/array-fpi/s42if.c [2023-11-19 07:59:35,799 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:36,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:36,027 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/sv-benchmarks/c/array-fpi/s42if.c [2023-11-19 07:59:36,036 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/data/07bcbef29/6eb3ce271b6c450d870d7b0f68f28a9d/FLAG39b53b25b [2023-11-19 07:59:36,054 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/data/07bcbef29/6eb3ce271b6c450d870d7b0f68f28a9d [2023-11-19 07:59:36,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:36,059 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:36,060 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:36,061 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:36,067 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:36,068 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,069 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f1a932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36, skipping insertion in model container [2023-11-19 07:59:36,069 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,093 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:36,289 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_4e17e211-0652-4e06-b415-c319cc0c9cd0/sv-benchmarks/c/array-fpi/s42if.c[588,601] [2023-11-19 07:59:36,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:36,331 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:36,346 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_4e17e211-0652-4e06-b415-c319cc0c9cd0/sv-benchmarks/c/array-fpi/s42if.c[588,601] [2023-11-19 07:59:36,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:36,374 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:36,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36 WrapperNode [2023-11-19 07:59:36,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:36,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:36,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:36,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:36,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,421 INFO L138 Inliner]: procedures = 17, calls = 36, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 98 [2023-11-19 07:59:36,422 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:36,423 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:36,423 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:36,423 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:36,433 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,433 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,436 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,436 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,444 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,451 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,454 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:36,455 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:36,455 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:36,455 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:36,459 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (1/1) ... [2023-11-19 07:59:36,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:36,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:36,496 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:36,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:36,528 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:36,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:36,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:36,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:36,604 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:36,606 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:36,884 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:36,892 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:36,893 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:59:36,896 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:36 BoogieIcfgContainer [2023-11-19 07:59:36,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:36,900 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:36,900 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:36,909 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:36,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:36" (1/3) ... [2023-11-19 07:59:36,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4cb50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:36, skipping insertion in model container [2023-11-19 07:59:36,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:36" (2/3) ... [2023-11-19 07:59:36,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4cb50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:36, skipping insertion in model container [2023-11-19 07:59:36,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:36" (3/3) ... [2023-11-19 07:59:36,918 INFO L112 eAbstractionObserver]: Analyzing ICFG s42if.c [2023-11-19 07:59:36,940 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:36,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:59:36,986 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:36,994 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;@31ebb781, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:36,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:59:36,999 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:59:37,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:37,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:37,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:37,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2023-11-19 07:59:37,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473938431] [2023-11-19 07:59:37,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:37,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:37,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473938431] [2023-11-19 07:59:37,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473938431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:37,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:37,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:37,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388228455] [2023-11-19 07:59:37,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:37,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:59:37,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:59:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:59:37,266 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:37,287 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2023-11-19 07:59:37,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:59:37,290 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 07:59:37,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:37,298 INFO L225 Difference]: With dead ends: 42 [2023-11-19 07:59:37,298 INFO L226 Difference]: Without dead ends: 19 [2023-11-19 07:59:37,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 07:59:37,309 INFO L413 NwaCegarLoop]: 28 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, 28 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 07:59:37,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:37,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-19 07:59:37,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-19 07:59:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-11-19 07:59:37,340 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2023-11-19 07:59:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:37,341 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-11-19 07:59:37,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,341 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-11-19 07:59:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:59:37,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:37,342 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:37,343 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:37,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2023-11-19 07:59:37,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365684051] [2023-11-19 07:59:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:37,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:37,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:37,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365684051] [2023-11-19 07:59:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365684051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:37,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:37,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:37,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459578011] [2023-11-19 07:59:37,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:37,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:37,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:37,560 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:37,647 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2023-11-19 07:59:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 07:59:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:37,648 INFO L225 Difference]: With dead ends: 39 [2023-11-19 07:59:37,649 INFO L226 Difference]: Without dead ends: 27 [2023-11-19 07:59:37,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:37,651 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 26 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:37,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 11 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:37,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-19 07:59:37,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2023-11-19 07:59:37,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2023-11-19 07:59:37,659 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2023-11-19 07:59:37,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:37,659 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2023-11-19 07:59:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2023-11-19 07:59:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:59:37,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:37,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:37,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:59:37,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:37,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2023-11-19 07:59:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:37,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98350707] [2023-11-19 07:59:37,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:37,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:38,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98350707] [2023-11-19 07:59:38,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98350707] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854644487] [2023-11-19 07:59:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:38,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:38,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:38,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:38,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:38,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 07:59:38,862 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:38,947 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 10 treesize of output 8 [2023-11-19 07:59:38,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 07:59:39,003 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 07:59:39,068 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 07:59:39,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-11-19 07:59:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:39,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:39,445 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_41 (Array Int Int)) (|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int)) (or (= (+ 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_41) |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (* c_~N~0 5)) (not (= (select v_ArrVal_41 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))) 5)))) is different from false [2023-11-19 07:59:39,675 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:59:39,676 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 22 treesize of output 23 [2023-11-19 07:59:39,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-19 07:59:39,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-19 07:59:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:59:39,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854644487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:39,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:39,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 19 [2023-11-19 07:59:39,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072914970] [2023-11-19 07:59:39,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:39,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:59:39,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:59:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=244, Unknown=1, NotChecked=32, Total=342 [2023-11-19 07:59:39,700 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:40,415 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2023-11-19 07:59:40,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 07:59:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:59:40,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:40,418 INFO L225 Difference]: With dead ends: 52 [2023-11-19 07:59:40,418 INFO L226 Difference]: Without dead ends: 48 [2023-11-19 07:59:40,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 32 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=184, Invalid=575, Unknown=1, NotChecked=52, Total=812 [2023-11-19 07:59:40,420 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 54 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 50 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:40,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 60 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 276 Invalid, 1 Unknown, 57 Unchecked, 0.4s Time] [2023-11-19 07:59:40,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-19 07:59:40,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 35. [2023-11-19 07:59:40,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 34 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2023-11-19 07:59:40,440 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 21 [2023-11-19 07:59:40,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:40,444 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2023-11-19 07:59:40,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2023-11-19 07:59:40,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:59:40,446 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:40,446 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:40,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:40,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:40,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:40,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:40,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2023-11-19 07:59:40,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:40,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168006193] [2023-11-19 07:59:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:40,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:40,706 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:40,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1267168047] [2023-11-19 07:59:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:40,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:40,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:40,708 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:40,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:59:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:40,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:59:40,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:40,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-19 07:59:40,925 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:40,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:40,983 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 27 treesize of output 23 [2023-11-19 07:59:40,990 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:40,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 16 [2023-11-19 07:59:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:41,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168006193] [2023-11-19 07:59:41,006 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267168047] [2023-11-19 07:59:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267168047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:41,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:41,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-11-19 07:59:41,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739742064] [2023-11-19 07:59:41,010 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:41,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:41,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:41,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:41,016 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:41,219 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2023-11-19 07:59:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:59:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:59:41,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:41,222 INFO L225 Difference]: With dead ends: 75 [2023-11-19 07:59:41,222 INFO L226 Difference]: Without dead ends: 63 [2023-11-19 07:59:41,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:41,224 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:41,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 60 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-11-19 07:59:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 47. [2023-11-19 07:59:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2023-11-19 07:59:41,240 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2023-11-19 07:59:41,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:41,241 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2023-11-19 07:59:41,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,241 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2023-11-19 07:59:41,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 07:59:41,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:41,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:41,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:41,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:41,457 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:41,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:41,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1592625659, now seen corresponding path program 1 times [2023-11-19 07:59:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742186229] [2023-11-19 07:59:41,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:41,476 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:41,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [702141352] [2023-11-19 07:59:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:41,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:41,479 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:59:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:41,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:41,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:41,581 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 07:59:41,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:41,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:41,669 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 14 treesize of output 12 [2023-11-19 07:59:41,673 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 14 treesize of output 12 [2023-11-19 07:59:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:41,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:41,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742186229] [2023-11-19 07:59:41,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:41,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702141352] [2023-11-19 07:59:41,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702141352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:41,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:41,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2023-11-19 07:59:41,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654656094] [2023-11-19 07:59:41,695 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:41,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:59:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:41,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:59:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:41,699 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:41,821 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2023-11-19 07:59:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-19 07:59:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:41,823 INFO L225 Difference]: With dead ends: 78 [2023-11-19 07:59:41,823 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 07:59:41,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:41,825 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:41,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 62 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:41,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 07:59:41,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 49. [2023-11-19 07:59:41,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.2916666666666667) internal successors, (62), 48 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2023-11-19 07:59:41,840 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 21 [2023-11-19 07:59:41,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:41,841 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2023-11-19 07:59:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-11-19 07:59:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:59:41,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:41,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:41,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:42,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:42,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:42,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,060 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2023-11-19 07:59:42,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249124836] [2023-11-19 07:59:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:42,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249124836] [2023-11-19 07:59:42,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249124836] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:42,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858133416] [2023-11-19 07:59:42,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:59:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:42,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:42,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:42,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:59:42,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:59:42,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:42,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:42,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:42,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:42,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:42,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:42,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858133416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:42,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:42,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-19 07:59:42,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133470839] [2023-11-19 07:59:42,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:42,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:42,419 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:42,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:42,654 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-19 07:59:42,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:42,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-19 07:59:42,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:42,659 INFO L225 Difference]: With dead ends: 85 [2023-11-19 07:59:42,659 INFO L226 Difference]: Without dead ends: 75 [2023-11-19 07:59:42,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:42,662 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 58 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:42,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 22 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:42,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-19 07:59:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 53. [2023-11-19 07:59:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 52 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-11-19 07:59:42,688 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 23 [2023-11-19 07:59:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:42,689 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-11-19 07:59:42,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.727272727272727) internal successors, (41), 11 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-11-19 07:59:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 07:59:42,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:42,691 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:42,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 07:59:42,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:42,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:42,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2023-11-19 07:59:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749675711] [2023-11-19 07:59:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:43,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:43,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749675711] [2023-11-19 07:59:43,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749675711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:43,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672196737] [2023-11-19 07:59:43,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 07:59:43,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:43,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:43,016 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:43,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:59:43,103 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-19 07:59:43,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:43,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:59:43,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:43,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:43,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672196737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:43,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:43,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-11-19 07:59:43,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115641657] [2023-11-19 07:59:43,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:43,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:59:43,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:43,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:59:43,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:43,231 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:43,423 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2023-11-19 07:59:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 07:59:43,426 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-11-19 07:59:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:43,427 INFO L225 Difference]: With dead ends: 78 [2023-11-19 07:59:43,427 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 07:59:43,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:43,429 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:43,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 30 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 07:59:43,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2023-11-19 07:59:43,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2023-11-19 07:59:43,439 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 24 [2023-11-19 07:59:43,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:43,439 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2023-11-19 07:59:43,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:43,440 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2023-11-19 07:59:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:59:43,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:43,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:43,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:43,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:43,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:43,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:43,659 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2023-11-19 07:59:43,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741019222] [2023-11-19 07:59:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:59:44,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:44,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741019222] [2023-11-19 07:59:44,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741019222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:44,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667282397] [2023-11-19 07:59:44,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 07:59:44,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:44,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:44,370 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:44,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:44,458 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 07:59:44,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:44,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-19 07:59:44,468 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:44,474 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 10 treesize of output 8 [2023-11-19 07:59:44,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 07:59:44,517 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 07:59:44,567 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 07:59:44,697 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 07:59:44,779 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 07:59:44,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-11-19 07:59:45,001 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:45,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2023-11-19 07:59:45,148 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:45,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:45,420 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (v_ArrVal_191 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_191))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (= (* c_~N~0 5) (+ .cse0 10)) (not (= 5 (select v_ArrVal_191 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (not (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))) 5))))))) is different from false [2023-11-19 07:59:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-19 07:59:46,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667282397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:46,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:46,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 36 [2023-11-19 07:59:46,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075953872] [2023-11-19 07:59:46,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:46,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-19 07:59:46,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:46,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-19 07:59:46,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1051, Unknown=3, NotChecked=66, Total=1260 [2023-11-19 07:59:46,494 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:48,760 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (< |c_ULTIMATE.start_main_~i~0#1| 1)) (.cse5 (forall ((v_ArrVal_191 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_subst_5 Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_191))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse16 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (not (= (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))) 5)) (not (= 5 (select v_ArrVal_191 (+ |ULTIMATE.start_main_~a~0#1.offset| (* 4 v_subst_5))))) (< .cse16 1))))))) (.cse6 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse7 (< |c_ULTIMATE.start_main_~i~0#1| 2)) (.cse1 (* 5 |c_ULTIMATE.start_main_~i~0#1|))) (and (= c_~N~0 2) (or .cse0 (forall ((v_ArrVal_191 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_subst_5 Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_191))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (< .cse1 (+ .cse2 6)) (not (= (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))) 5)) (not (= 5 (select v_ArrVal_191 (+ |ULTIMATE.start_main_~a~0#1.offset| (* 4 v_subst_5))))))))))) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or .cse0 .cse5) (exists ((v_subst_4 Int)) (= 5 (select .cse6 (+ (* 4 v_subst_4) |c_ULTIMATE.start_main_~a~0#1.offset|)))) (or .cse7 .cse5) (or (< c_~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((v_ArrVal_191 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_subst_5 Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_191))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (= (* c_~N~0 5) (+ .cse8 10)) (not (= (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))) 5)) (not (= 5 (select v_ArrVal_191 (+ |ULTIMATE.start_main_~a~0#1.offset| (* 4 v_subst_5))))))))))) (= (select .cse6 (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem12#1|) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 5) (or .cse7 (forall ((v_ArrVal_191 (Array Int Int)) (|ULTIMATE.start_main_~a~0#1.offset| Int) (v_subst_5 Int) (|v_ULTIMATE.start_main_~i~0#1_63| Int)) (let ((.cse12 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_191))) (let ((.cse13 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse11 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (< .cse1 (+ .cse11 11)) (not (= (select (select (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_63| 4))) 5)) (not (= 5 (select v_ArrVal_191 (+ |ULTIMATE.start_main_~a~0#1.offset| (* 4 v_subst_5))))))))))))) is different from false [2023-11-19 07:59:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:51,068 INFO L93 Difference]: Finished difference Result 83 states and 100 transitions. [2023-11-19 07:59:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-19 07:59:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-19 07:59:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:51,071 INFO L225 Difference]: With dead ends: 83 [2023-11-19 07:59:51,072 INFO L226 Difference]: Without dead ends: 79 [2023-11-19 07:59:51,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=377, Invalid=2277, Unknown=6, NotChecked=202, Total=2862 [2023-11-19 07:59:51,074 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 78 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 113 mSolverCounterUnsat, 45 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 960 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 45 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:51,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 144 Invalid, 960 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 664 Invalid, 45 Unknown, 138 Unchecked, 1.3s Time] [2023-11-19 07:59:51,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-19 07:59:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2023-11-19 07:59:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.28125) internal successors, (82), 64 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2023-11-19 07:59:51,103 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 29 [2023-11-19 07:59:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:51,105 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2023-11-19 07:59:51,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.9166666666666667) internal successors, (69), 36 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2023-11-19 07:59:51,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:59:51,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:51,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:51,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:51,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:59:51,325 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:51,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 42825004, now seen corresponding path program 1 times [2023-11-19 07:59:51,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:51,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808279412] [2023-11-19 07:59:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:51,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:51,343 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:51,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [980804587] [2023-11-19 07:59:51,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:51,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:51,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:51,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:51,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:51,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 07:59:51,443 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:51,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-19 07:59:51,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:59:51,676 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 07:59:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:59:51,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:51,771 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_231 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2023-11-19 07:59:51,785 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_231 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_231) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) is different from false [2023-11-19 07:59:51,844 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:59:51,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 29 [2023-11-19 07:59:51,855 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:59:51,855 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 38 treesize of output 32 [2023-11-19 07:59:51,860 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 7 treesize of output 3 [2023-11-19 07:59:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 5 not checked. [2023-11-19 07:59:51,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808279412] [2023-11-19 07:59:51,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:51,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980804587] [2023-11-19 07:59:51,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980804587] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:51,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:51,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-19 07:59:51,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592028810] [2023-11-19 07:59:51,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:51,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 07:59:51,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:51,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 07:59:51,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=217, Unknown=2, NotChecked=62, Total=342 [2023-11-19 07:59:51,937 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:52,441 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2023-11-19 07:59:52,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:59:52,443 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-19 07:59:52,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:52,444 INFO L225 Difference]: With dead ends: 114 [2023-11-19 07:59:52,444 INFO L226 Difference]: Without dead ends: 107 [2023-11-19 07:59:52,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=330, Unknown=2, NotChecked=78, Total=506 [2023-11-19 07:59:52,445 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:52,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 89 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 341 Invalid, 2 Unknown, 135 Unchecked, 0.3s Time] [2023-11-19 07:59:52,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-19 07:59:52,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 71. [2023-11-19 07:59:52,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 70 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2023-11-19 07:59:52,466 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 29 [2023-11-19 07:59:52,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:52,466 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2023-11-19 07:59:52,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 19 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:52,467 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2023-11-19 07:59:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:59:52,468 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:52,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:52,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:52,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:59:52,679 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:52,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:52,680 INFO L85 PathProgramCache]: Analyzing trace with hash -968292246, now seen corresponding path program 1 times [2023-11-19 07:59:52,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:52,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725055574] [2023-11-19 07:59:52,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:52,697 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:52,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768090995] [2023-11-19 07:59:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:52,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:52,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:52,710 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:52,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:59:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:52,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 07:59:52,791 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:52,816 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 07:59:52,865 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:59:52,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 07:59:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:52,897 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:52,946 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 16 treesize of output 14 [2023-11-19 07:59:52,948 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 16 treesize of output 12 [2023-11-19 07:59:52,972 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:52,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:52,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725055574] [2023-11-19 07:59:52,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:52,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768090995] [2023-11-19 07:59:52,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768090995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:52,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:52,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-19 07:59:52,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706986343] [2023-11-19 07:59:52,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:52,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:59:52,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:52,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:59:52,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:52,975 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:53,211 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2023-11-19 07:59:53,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:59:53,212 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-19 07:59:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:53,212 INFO L225 Difference]: With dead ends: 115 [2023-11-19 07:59:53,212 INFO L226 Difference]: Without dead ends: 84 [2023-11-19 07:59:53,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:59:53,214 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 15 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:53,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 64 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-19 07:59:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 73. [2023-11-19 07:59:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.25) internal successors, (90), 72 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:53,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 90 transitions. [2023-11-19 07:59:53,232 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 90 transitions. Word has length 29 [2023-11-19 07:59:53,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:53,233 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 90 transitions. [2023-11-19 07:59:53,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:53,233 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 90 transitions. [2023-11-19 07:59:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:59:53,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:53,234 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:53,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:53,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:59:53,449 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:53,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -554569936, now seen corresponding path program 5 times [2023-11-19 07:59:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:53,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144583443] [2023-11-19 07:59:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:53,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:53,587 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:53,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144583443] [2023-11-19 07:59:53,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144583443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:53,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855464686] [2023-11-19 07:59:53,588 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-19 07:59:53,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:53,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:53,590 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:53,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:59:53,689 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-19 07:59:53,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:53,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:53,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:53,777 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:53,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:53,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855464686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:53,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:53,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 07:59:53,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172427018] [2023-11-19 07:59:53,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:53,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:59:53,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:53,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:59:53,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:53,895 INFO L87 Difference]: Start difference. First operand 73 states and 90 transitions. Second operand has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:54,186 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2023-11-19 07:59:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:59:54,186 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-19 07:59:54,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:54,187 INFO L225 Difference]: With dead ends: 121 [2023-11-19 07:59:54,188 INFO L226 Difference]: Without dead ends: 108 [2023-11-19 07:59:54,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 51 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:59:54,190 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:54,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:54,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-11-19 07:59:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 75. [2023-11-19 07:59:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 94 transitions. [2023-11-19 07:59:54,216 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 94 transitions. Word has length 31 [2023-11-19 07:59:54,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:54,219 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 94 transitions. [2023-11-19 07:59:54,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 14 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:54,219 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 94 transitions. [2023-11-19 07:59:54,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 07:59:54,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:54,225 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:54,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:54,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:59:54,451 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:54,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1053387787, now seen corresponding path program 6 times [2023-11-19 07:59:54,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:54,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731272513] [2023-11-19 07:59:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:54,589 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:54,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731272513] [2023-11-19 07:59:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731272513] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180171535] [2023-11-19 07:59:54,590 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-19 07:59:54,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:54,592 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:54,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:59:54,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-19 07:59:54,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:59:54,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:54,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:54,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:59:54,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180171535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:54,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:54,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-11-19 07:59:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002730827] [2023-11-19 07:59:54,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:54,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:59:54,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:59:54,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:59:54,858 INFO L87 Difference]: Start difference. First operand 75 states and 94 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:55,042 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2023-11-19 07:59:55,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:55,042 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-19 07:59:55,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:55,043 INFO L225 Difference]: With dead ends: 109 [2023-11-19 07:59:55,043 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 07:59:55,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:59:55,045 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 72 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:55,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 24 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:55,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 07:59:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2023-11-19 07:59:55,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 46 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 55 transitions. [2023-11-19 07:59:55,058 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 55 transitions. Word has length 32 [2023-11-19 07:59:55,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:55,058 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 55 transitions. [2023-11-19 07:59:55,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 55 transitions. [2023-11-19 07:59:55,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 07:59:55,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:55,060 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:55,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:59:55,275 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:59:55,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1383779305, now seen corresponding path program 7 times [2023-11-19 07:59:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:55,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682011494] [2023-11-19 07:59:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 07:59:56,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:56,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682011494] [2023-11-19 07:59:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682011494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399087385] [2023-11-19 07:59:56,188 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-19 07:59:56,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:56,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:56,190 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:56,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:59:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:56,284 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-19 07:59:56,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:56,298 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 10 treesize of output 8 [2023-11-19 07:59:56,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 07:59:56,321 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 07:59:56,337 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 16 treesize of output 11 [2023-11-19 07:59:56,361 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 07:59:56,425 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 07:59:56,451 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 07:59:56,475 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 07:59:56,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-11-19 07:59:56,697 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 07:59:56,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2023-11-19 07:59:56,870 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-19 07:59:56,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 53 [2023-11-19 07:59:57,043 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:57,044 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:57,649 WARN L854 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~i~0#1| Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (= (* c_~N~0 5) (+ 15 .cse0)) (not (= 5 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* |ULTIMATE.start_main_~i~0#1| 4))))) (not (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5))))))) is different from false [2023-11-19 07:59:58,162 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_subst_25 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (+ .cse3 10))) (or (= (* 5 |c_ULTIMATE.start_main_~i~0#1|) .cse0) (not (= 5 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse3))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* v_subst_25 4))))) (not (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5)))))))) is different from false [2023-11-19 07:59:58,192 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_subst_25 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (+ 5 .cse3))) (or (= (* 5 |c_ULTIMATE.start_main_~i~0#1|) .cse0) (not (= 5 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse0)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* v_subst_25 4))))) (not (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5)))))))) is different from false [2023-11-19 07:59:58,245 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_subst_25 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (= (* 5 |c_ULTIMATE.start_main_~i~0#1|) .cse0) (not (= 5 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* v_subst_25 4))))) (not (= (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5))))))) is different from false [2023-11-19 07:59:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 7 trivial. 14 not checked. [2023-11-19 07:59:58,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399087385] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:58,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:58,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 16] total 38 [2023-11-19 07:59:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735887671] [2023-11-19 07:59:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:58,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-19 07:59:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:58,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-19 07:59:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1009, Unknown=4, NotChecked=268, Total=1406 [2023-11-19 07:59:58,291 INFO L87 Difference]: Start difference. First operand 47 states and 55 transitions. Second operand has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:58,623 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (* c_~N~0 5)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (not (= 5 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ (* |c_ULTIMATE.start_main_~i~0#1| 4) |c_ULTIMATE.start_main_~a~0#1.offset|)))))) (and (= .cse0 0) (or .cse1 (= .cse2 (+ .cse0 5))) (forall ((v_subst_25 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (+ 5 .cse6))) (or (= (* 5 |c_ULTIMATE.start_main_~i~0#1|) .cse3) (not (= 5 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| .cse3)) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* v_subst_25 4))))) (not (= (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse6 10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5)))))))) (or (forall ((v_subst_25 Int) (|ULTIMATE.start_main_~a~0#1.offset| Int) (|v_ULTIMATE.start_main_~i~0#1_126| Int) (v_ArrVal_406 (Array Int Int)) (|v_ULTIMATE.start_main_~i~0#1_128| Int)) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_406))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (or (= .cse2 (+ 15 .cse7)) (not (= 5 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 5 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_128| 4))))) (not (= 5 (select v_ArrVal_406 (+ |ULTIMATE.start_main_~a~0#1.offset| (* v_subst_25 4))))) (not (= (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |ULTIMATE.start_main_~a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_126| 4))) 5))))))) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0)) (not (= |c_ULTIMATE.start_main_~#sum~0#1.base| |c_ULTIMATE.start_main_~a~0#1.base|)) (or .cse1 (= .cse2 (+ .cse0 10))) (or (= c_~N~0 3) .cse1) (= |c_ULTIMATE.start_main_~i~0#1| 1))) is different from false [2023-11-19 08:00:01,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:01,322 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2023-11-19 08:00:01,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-19 08:00:01,323 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-19 08:00:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:01,324 INFO L225 Difference]: With dead ends: 120 [2023-11-19 08:00:01,324 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 08:00:01,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 58 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 867 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=449, Invalid=3105, Unknown=6, NotChecked=600, Total=4160 [2023-11-19 08:00:01,327 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 116 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 370 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:01,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 208 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 996 Invalid, 14 Unknown, 370 Unchecked, 1.3s Time] [2023-11-19 08:00:01,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 08:00:01,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 93. [2023-11-19 08:00:01,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.25) internal successors, (115), 92 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2023-11-19 08:00:01,358 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 37 [2023-11-19 08:00:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:01,358 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2023-11-19 08:00:01,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.9210526315789473) internal successors, (73), 38 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2023-11-19 08:00:01,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:00:01,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:01,360 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:01,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:01,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:00:01,576 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:01,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1441037607, now seen corresponding path program 2 times [2023-11-19 08:00:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481728227] [2023-11-19 08:00:01,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:01,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:01,591 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:01,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438832344] [2023-11-19 08:00:01,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:01,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:01,593 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:01,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:00:01,711 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:01,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:01,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-19 08:00:01,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:01,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 13 [2023-11-19 08:00:01,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:01,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-11-19 08:00:02,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 08:00:02,037 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 08:00:02,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:02,100 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 21 treesize of output 15 [2023-11-19 08:00:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:02,177 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:07,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:07,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 31 [2023-11-19 08:00:07,415 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:07,416 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 42 treesize of output 34 [2023-11-19 08:00:07,422 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 13 treesize of output 7 [2023-11-19 08:00:07,821 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:07,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:07,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481728227] [2023-11-19 08:00:07,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:07,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438832344] [2023-11-19 08:00:07,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438832344] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:07,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:07,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2023-11-19 08:00:07,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886519418] [2023-11-19 08:00:07,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:07,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-19 08:00:07,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:07,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-19 08:00:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=914, Unknown=11, NotChecked=0, Total=1122 [2023-11-19 08:00:07,825 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:09,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:09,872 INFO L93 Difference]: Finished difference Result 261 states and 339 transitions. [2023-11-19 08:00:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-19 08:00:09,874 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-19 08:00:09,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:09,876 INFO L225 Difference]: With dead ends: 261 [2023-11-19 08:00:09,876 INFO L226 Difference]: Without dead ends: 254 [2023-11-19 08:00:09,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=674, Invalid=2507, Unknown=11, NotChecked=0, Total=3192 [2023-11-19 08:00:09,879 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 322 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:09,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 100 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-19 08:00:09,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-19 08:00:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 157. [2023-11-19 08:00:09,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.3012820512820513) internal successors, (203), 156 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:09,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 203 transitions. [2023-11-19 08:00:09,924 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 203 transitions. Word has length 37 [2023-11-19 08:00:09,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:09,924 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 203 transitions. [2023-11-19 08:00:09,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.9705882352941178) internal successors, (67), 34 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:09,925 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 203 transitions. [2023-11-19 08:00:09,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:00:09,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:09,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:09,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:10,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:00:10,127 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:10,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -147310295, now seen corresponding path program 2 times [2023-11-19 08:00:10,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:10,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888732998] [2023-11-19 08:00:10,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:10,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:10,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:00:10,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116541226] [2023-11-19 08:00:10,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:10,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:10,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:10,153 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:10,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 08:00:10,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:10,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:10,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-19 08:00:10,263 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:10,302 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 08:00:10,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:10,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 08:00:10,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 08:00:10,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2023-11-19 08:00:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:10,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:10,513 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 16 treesize of output 14 [2023-11-19 08:00:10,516 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 16 treesize of output 12 [2023-11-19 08:00:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888732998] [2023-11-19 08:00:10,570 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:00:10,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116541226] [2023-11-19 08:00:10,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116541226] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:10,570 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:00:10,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-19 08:00:10,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412484678] [2023-11-19 08:00:10,572 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:10,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:00:10,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:10,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:00:10,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:00:10,574 INFO L87 Difference]: Start difference. First operand 157 states and 203 transitions. Second operand has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:10,927 INFO L93 Difference]: Finished difference Result 276 states and 365 transitions. [2023-11-19 08:00:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:00:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2023-11-19 08:00:10,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:10,930 INFO L225 Difference]: With dead ends: 276 [2023-11-19 08:00:10,930 INFO L226 Difference]: Without dead ends: 187 [2023-11-19 08:00:10,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:00:10,932 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:10,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 69 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:10,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-19 08:00:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 157. [2023-11-19 08:00:10,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 156 states have (on average 1.2884615384615385) internal successors, (201), 156 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:10,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2023-11-19 08:00:10,987 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 37 [2023-11-19 08:00:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:10,987 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2023-11-19 08:00:10,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.823529411764706) internal successors, (48), 17 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:10,988 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2023-11-19 08:00:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 08:00:10,989 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:10,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:11,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:11,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:00:11,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:11,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1016239403, now seen corresponding path program 8 times [2023-11-19 08:00:11,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456654166] [2023-11-19 08:00:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:11,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456654166] [2023-11-19 08:00:11,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456654166] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:11,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045232492] [2023-11-19 08:00:11,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:11,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:11,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:11,396 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:11,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 08:00:11,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:11,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:11,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:11,522 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:11,632 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:11,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:11,742 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:11,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045232492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:11,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:11,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-11-19 08:00:11,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441443944] [2023-11-19 08:00:11,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:11,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:00:11,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:11,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:00:11,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:00:11,744 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:12,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:12,136 INFO L93 Difference]: Finished difference Result 212 states and 274 transitions. [2023-11-19 08:00:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:00:12,136 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2023-11-19 08:00:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:12,138 INFO L225 Difference]: With dead ends: 212 [2023-11-19 08:00:12,138 INFO L226 Difference]: Without dead ends: 196 [2023-11-19 08:00:12,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 8 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:00:12,140 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 94 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:12,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 36 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-19 08:00:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 108. [2023-11-19 08:00:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 107 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 133 transitions. [2023-11-19 08:00:12,187 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 133 transitions. Word has length 39 [2023-11-19 08:00:12,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:12,187 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 133 transitions. [2023-11-19 08:00:12,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:12,188 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 133 transitions. [2023-11-19 08:00:12,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-19 08:00:12,188 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:12,189 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:12,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:12,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:00:12,409 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:12,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:12,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1682760144, now seen corresponding path program 9 times [2023-11-19 08:00:12,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:12,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245441933] [2023-11-19 08:00:12,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:12,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:12,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245441933] [2023-11-19 08:00:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245441933] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539115035] [2023-11-19 08:00:12,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:00:12,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:12,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:12,586 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:12,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 08:00:12,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-19 08:00:12,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:12,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:12,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:12,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:12,924 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:00:12,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539115035] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:12,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:12,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-11-19 08:00:12,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092992305] [2023-11-19 08:00:12,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:00:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:12,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:00:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:00:12,927 INFO L87 Difference]: Start difference. First operand 108 states and 133 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:13,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:13,163 INFO L93 Difference]: Finished difference Result 137 states and 167 transitions. [2023-11-19 08:00:13,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:00:13,164 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2023-11-19 08:00:13,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:13,164 INFO L225 Difference]: With dead ends: 137 [2023-11-19 08:00:13,164 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 08:00:13,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:00:13,168 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 66 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:13,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 39 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 08:00:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2023-11-19 08:00:13,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 54 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-11-19 08:00:13,189 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 40 [2023-11-19 08:00:13,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:13,189 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-11-19 08:00:13,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 17 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-11-19 08:00:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-19 08:00:13,191 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:13,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:13,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:13,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 08:00:13,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:00:13,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:13,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2111860654, now seen corresponding path program 10 times [2023-11-19 08:00:13,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:13,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964283294] [2023-11-19 08:00:13,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:13,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:13,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:00:14,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964283294] [2023-11-19 08:00:14,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964283294] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:14,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816222337] [2023-11-19 08:00:14,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-19 08:00:14,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:14,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:14,698 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:14,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e17e211-0652-4e06-b415-c319cc0c9cd0/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 08:00:14,834 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-19 08:00:14,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:14,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-19 08:00:14,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:14,845 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 08:00:14,849 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 10 treesize of output 8 [2023-11-19 08:00:14,890 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 08:00:14,944 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 08:00:14,993 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 08:00:15,041 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 08:00:15,155 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 08:00:15,222 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 08:00:15,313 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 08:00:15,346 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 08:00:15,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2023-11-19 08:00:15,593 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-19 08:00:15,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 39 [2023-11-19 08:00:15,791 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-19 08:00:15,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 53 [2023-11-19 08:00:16,017 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-19 08:00:16,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 67 [2023-11-19 08:00:16,221 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:16,222 INFO L327 TraceCheckSpWp]: Computing backward predicates...