./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/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_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/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_d8379c57-000a-42d6-aa68-43e9a68e9242/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 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:02:40,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:02:40,297 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:02:40,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:02:40,303 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:02:40,329 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:02:40,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:02:40,330 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:02:40,331 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:02:40,332 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:02:40,333 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:02:40,333 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:02:40,334 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:02:40,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:02:40,335 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:02:40,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:02:40,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:02:40,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:02:40,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:02:40,338 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:02:40,339 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:02:40,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:02:40,340 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:02:40,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:02:40,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:02:40,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:02:40,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:02:40,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:02:40,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:40,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:02:40,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:02:40,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:02:40,346 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:02:40,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:02:40,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:02:40,347 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:02:40,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:02:40,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:02:40,348 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:02:40,348 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_d8379c57-000a-42d6-aa68-43e9a68e9242/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9851f41ad4fb2d0ff96507e8e48f0d2886a8de6481eed845b23377b9fa492b45 [2023-11-19 08:02:40,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:02:40,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:02:40,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:02:40,682 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:02:40,684 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:02:40,685 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2023-11-19 08:02:43,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:02:44,109 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:02:44,110 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c [2023-11-19 08:02:44,118 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/data/d67975015/391b7cb6297a4233b92afb14221232a4/FLAGe9aeaa4ff [2023-11-19 08:02:44,133 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/data/d67975015/391b7cb6297a4233b92afb14221232a4 [2023-11-19 08:02:44,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:02:44,138 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:02:44,140 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:44,140 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:02:44,148 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:02:44,149 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,150 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb14305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44, skipping insertion in model container [2023-11-19 08:02:44,150 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:02:44,326 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_d8379c57-000a-42d6-aa68-43e9a68e9242/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2023-11-19 08:02:44,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:44,362 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:02:44,377 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_d8379c57-000a-42d6-aa68-43e9a68e9242/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound2.c[538,551] [2023-11-19 08:02:44,387 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:02:44,402 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:02:44,402 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44 WrapperNode [2023-11-19 08:02:44,403 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:02:44,404 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:44,404 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:02:44,404 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:02:44,413 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,418 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,443 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2023-11-19 08:02:44,444 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:02:44,445 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:02:44,445 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:02:44,445 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:02:44,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,456 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,457 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,461 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,464 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,466 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,469 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:02:44,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:02:44,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:02:44,474 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:02:44,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (1/1) ... [2023-11-19 08:02:44,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:02:44,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:44,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:02:44,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:02:44,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:02:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:02:44,555 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:02:44,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:02:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:02:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:02:44,556 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:02:44,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:02:44,615 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:02:44,617 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:02:44,799 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:02:44,808 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:02:44,808 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 08:02:44,813 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:44 BoogieIcfgContainer [2023-11-19 08:02:44,813 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:02:44,817 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:02:44,820 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:02:44,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:02:44,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:02:44" (1/3) ... [2023-11-19 08:02:44,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742636ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:44, skipping insertion in model container [2023-11-19 08:02:44,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:02:44" (2/3) ... [2023-11-19 08:02:44,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742636ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:02:44, skipping insertion in model container [2023-11-19 08:02:44,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:44" (3/3) ... [2023-11-19 08:02:44,827 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound2.c [2023-11-19 08:02:44,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:02:44,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:02:44,897 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:02:44,905 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;@2d73d080, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:02:44,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:02:44,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 08:02:44,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:02:44,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:44,920 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:44,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:44,927 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2023-11-19 08:02:44,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:44,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531474602] [2023-11-19 08:02:44,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:44,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:02:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:02:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,151 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:02:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:45,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531474602] [2023-11-19 08:02:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531474602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:45,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:02:45,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979263709] [2023-11-19 08:02:45,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:45,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:02:45,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:45,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:02:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:02:45,196 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:02:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:45,223 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2023-11-19 08:02:45,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:02:45,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-19 08:02:45,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:45,232 INFO L225 Difference]: With dead ends: 63 [2023-11-19 08:02:45,233 INFO L226 Difference]: Without dead ends: 29 [2023-11-19 08:02:45,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 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 08:02:45,241 INFO L413 NwaCegarLoop]: 43 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, 43 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 08:02:45,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-19 08:02:45,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-19 08:02:45,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-11-19 08:02:45,299 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2023-11-19 08:02:45,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:45,300 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-11-19 08:02:45,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 08:02:45,302 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-11-19 08:02:45,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:02:45,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:45,304 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:45,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:02:45,305 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:45,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:45,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2023-11-19 08:02:45,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:45,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253060953] [2023-11-19 08:02:45,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:02:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:02:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:02:45,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:45,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253060953] [2023-11-19 08:02:45,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253060953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:45,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:45,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:45,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075501056] [2023-11-19 08:02:45,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:45,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:45,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:45,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:45,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:45,602 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:45,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:45,706 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2023-11-19 08:02:45,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:45,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-11-19 08:02:45,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:45,708 INFO L225 Difference]: With dead ends: 42 [2023-11-19 08:02:45,709 INFO L226 Difference]: Without dead ends: 40 [2023-11-19 08:02:45,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:45,711 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:45,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 125 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-19 08:02:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-11-19 08:02:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:45,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-11-19 08:02:45,727 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2023-11-19 08:02:45,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:45,728 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-11-19 08:02:45,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 08:02:45,728 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-11-19 08:02:45,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:02:45,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:45,730 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:45,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:02:45,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:45,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2023-11-19 08:02:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78915162] [2023-11-19 08:02:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:45,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-19 08:02:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:02:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:02:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:02:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 08:02:46,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:46,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78915162] [2023-11-19 08:02:46,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78915162] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:46,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:46,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:46,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826308953] [2023-11-19 08:02:46,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:46,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:46,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:46,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:46,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:46,036 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:02:46,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:46,162 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-11-19 08:02:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:02:46,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-11-19 08:02:46,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:46,165 INFO L225 Difference]: With dead ends: 46 [2023-11-19 08:02:46,165 INFO L226 Difference]: Without dead ends: 44 [2023-11-19 08:02:46,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:46,167 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:46,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 121 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:46,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-19 08:02:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2023-11-19 08:02:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 08:02:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-11-19 08:02:46,183 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2023-11-19 08:02:46,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:46,184 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-19 08:02:46,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:02:46,185 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-19 08:02:46,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 08:02:46,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:46,186 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:46,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:02:46,187 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:46,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:46,187 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2023-11-19 08:02:46,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:46,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219054308] [2023-11-19 08:02:46,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:46,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:46,217 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:46,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888377951] [2023-11-19 08:02:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:46,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:46,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:46,224 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:46,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:02:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:46,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-19 08:02:46,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:46,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219054308] [2023-11-19 08:02:46,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:46,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888377951] [2023-11-19 08:02:46,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888377951] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:46,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:46,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:46,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236374976] [2023-11-19 08:02:46,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:46,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:46,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:46,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:46,479 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:02:46,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:46,587 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2023-11-19 08:02:46,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:46,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2023-11-19 08:02:46,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:46,593 INFO L225 Difference]: With dead ends: 65 [2023-11-19 08:02:46,593 INFO L226 Difference]: Without dead ends: 51 [2023-11-19 08:02:46,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:46,605 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:46,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 123 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:46,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-19 08:02:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-19 08:02:46,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 31 states have internal predecessors, (34), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 08:02:46,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-19 08:02:46,633 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 34 [2023-11-19 08:02:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:46,634 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-19 08:02:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-19 08:02:46,634 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-19 08:02:46,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 08:02:46,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:46,636 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:46,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:46,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:46,837 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:46,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:46,838 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2023-11-19 08:02:46,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:46,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815367175] [2023-11-19 08:02:46,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:46,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:46,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1703480027] [2023-11-19 08:02:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:46,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:46,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:46,853 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:46,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:02:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:46,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:46,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:02:47,006 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:47,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815367175] [2023-11-19 08:02:47,007 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:47,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703480027] [2023-11-19 08:02:47,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703480027] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:47,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:47,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:47,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589658898] [2023-11-19 08:02:47,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:47,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:47,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:47,014 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:02:47,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:47,107 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2023-11-19 08:02:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:47,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 41 [2023-11-19 08:02:47,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:47,112 INFO L225 Difference]: With dead ends: 64 [2023-11-19 08:02:47,115 INFO L226 Difference]: Without dead ends: 57 [2023-11-19 08:02:47,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:02:47,119 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 9 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:47,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 107 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:47,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-19 08:02:47,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2023-11-19 08:02:47,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 08:02:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2023-11-19 08:02:47,155 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 41 [2023-11-19 08:02:47,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:47,162 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2023-11-19 08:02:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:02:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2023-11-19 08:02:47,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 08:02:47,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:47,165 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:47,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:47,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:47,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:47,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:47,388 INFO L85 PathProgramCache]: Analyzing trace with hash 105343995, now seen corresponding path program 1 times [2023-11-19 08:02:47,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:47,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335524408] [2023-11-19 08:02:47,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:47,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:47,414 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:47,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927185055] [2023-11-19 08:02:47,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:47,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:47,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:47,416 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:47,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:02:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:47,479 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 08:02:47,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:47,638 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-19 08:02:47,639 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:47,782 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-19 08:02:47,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335524408] [2023-11-19 08:02:47,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:47,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927185055] [2023-11-19 08:02:47,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927185055] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:47,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:47,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-11-19 08:02:47,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996267122] [2023-11-19 08:02:47,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:47,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:47,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:47,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:02:47,786 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:02:47,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:47,878 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2023-11-19 08:02:47,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:47,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 51 [2023-11-19 08:02:47,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:47,882 INFO L225 Difference]: With dead ends: 68 [2023-11-19 08:02:47,882 INFO L226 Difference]: Without dead ends: 66 [2023-11-19 08:02:47,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:02:47,884 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 8 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:47,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:02:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-19 08:02:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2023-11-19 08:02:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 37 states have (on average 1.162162162162162) internal successors, (43), 40 states have internal predecessors, (43), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-19 08:02:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-19 08:02:47,907 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 51 [2023-11-19 08:02:47,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:47,907 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-19 08:02:47,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 08:02:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-19 08:02:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-19 08:02:47,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:47,912 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:47,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:48,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:48,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:48,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:48,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2023-11-19 08:02:48,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:48,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614343075] [2023-11-19 08:02:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:48,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:48,156 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:48,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [683953433] [2023-11-19 08:02:48,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:48,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:48,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:48,158 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:48,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:02:48,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:48,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 08:02:48,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-19 08:02:48,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:52,340 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-19 08:02:52,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614343075] [2023-11-19 08:02:52,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:52,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683953433] [2023-11-19 08:02:52,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683953433] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:52,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:52,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-19 08:02:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681584319] [2023-11-19 08:02:52,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:52,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 08:02:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 08:02:52,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:02:52,347 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-19 08:02:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:55,201 INFO L93 Difference]: Finished difference Result 161 states and 224 transitions. [2023-11-19 08:02:55,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-19 08:02:55,202 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 71 [2023-11-19 08:02:55,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:55,205 INFO L225 Difference]: With dead ends: 161 [2023-11-19 08:02:55,205 INFO L226 Difference]: Without dead ends: 138 [2023-11-19 08:02:55,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=158, Invalid=654, Unknown=0, NotChecked=0, Total=812 [2023-11-19 08:02:55,207 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 76 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:55,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 341 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 08:02:55,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-19 08:02:55,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2023-11-19 08:02:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.180327868852459) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 25 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 08:02:55,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 129 transitions. [2023-11-19 08:02:55,254 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 129 transitions. Word has length 71 [2023-11-19 08:02:55,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:55,255 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 129 transitions. [2023-11-19 08:02:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 16 states have internal predecessors, (35), 9 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2023-11-19 08:02:55,256 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 129 transitions. [2023-11-19 08:02:55,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-19 08:02:55,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:55,258 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:55,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-19 08:02:55,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 08:02:55,474 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:55,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2023-11-19 08:02:55,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:55,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546931455] [2023-11-19 08:02:55,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:55,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:55,494 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:55,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504792321] [2023-11-19 08:02:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:55,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:55,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:55,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:55,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:02:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:55,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-19 08:02:55,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:55,932 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2023-11-19 08:02:55,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:56,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546931455] [2023-11-19 08:02:56,113 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504792321] [2023-11-19 08:02:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504792321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:02:56,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:02:56,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 08:02:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533923385] [2023-11-19 08:02:56,114 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:56,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:02:56,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:56,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:02:56,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:02:56,116 INFO L87 Difference]: Start difference. First operand 102 states and 129 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-19 08:02:56,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:56,714 INFO L93 Difference]: Finished difference Result 118 states and 150 transitions. [2023-11-19 08:02:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:02:56,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) Word has length 82 [2023-11-19 08:02:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:56,717 INFO L225 Difference]: With dead ends: 118 [2023-11-19 08:02:56,717 INFO L226 Difference]: Without dead ends: 116 [2023-11-19 08:02:56,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:02:56,719 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 35 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:56,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 374 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:02:56,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-19 08:02:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2023-11-19 08:02:56,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 64 states have (on average 1.203125) internal successors, (77), 67 states have internal predecessors, (77), 31 states have call successors, (31), 11 states have call predecessors, (31), 11 states have return successors, (30), 28 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-19 08:02:56,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 138 transitions. [2023-11-19 08:02:56,770 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 138 transitions. Word has length 82 [2023-11-19 08:02:56,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:56,771 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 138 transitions. [2023-11-19 08:02:56,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 10 states have internal predecessors, (25), 6 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 6 states have call predecessors, (13), 5 states have call successors, (13) [2023-11-19 08:02:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 138 transitions. [2023-11-19 08:02:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 08:02:56,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:56,774 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:56,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 08:02:56,987 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:56,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1888027627, now seen corresponding path program 2 times [2023-11-19 08:02:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:56,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457614339] [2023-11-19 08:02:56,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:56,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:57,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:57,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064855737] [2023-11-19 08:02:57,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:02:57,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:57,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:57,011 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:57,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:02:57,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:02:57,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:57,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 08:02:57,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 08:02:57,172 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:57,263 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2023-11-19 08:02:57,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:57,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457614339] [2023-11-19 08:02:57,264 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:57,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064855737] [2023-11-19 08:02:57,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064855737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:57,264 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:57,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-11-19 08:02:57,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093997544] [2023-11-19 08:02:57,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:57,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:57,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:57,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:57,268 INFO L87 Difference]: Start difference. First operand 107 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 08:02:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:57,363 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2023-11-19 08:02:57,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:02:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 84 [2023-11-19 08:02:57,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:57,367 INFO L225 Difference]: With dead ends: 133 [2023-11-19 08:02:57,368 INFO L226 Difference]: Without dead ends: 111 [2023-11-19 08:02:57,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:57,371 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 1 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:57,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 112 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-19 08:02:57,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-19 08:02:57,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 66 states have (on average 1.196969696969697) internal successors, (79), 69 states have internal predecessors, (79), 33 states have call successors, (33), 11 states have call predecessors, (33), 11 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-19 08:02:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2023-11-19 08:02:57,431 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 84 [2023-11-19 08:02:57,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:57,432 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2023-11-19 08:02:57,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 5 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-19 08:02:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2023-11-19 08:02:57,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 08:02:57,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:57,435 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:57,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 08:02:57,653 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:57,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:57,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1729716470, now seen corresponding path program 1 times [2023-11-19 08:02:57,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:57,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362453347] [2023-11-19 08:02:57,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:57,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:57,668 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:57,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744280266] [2023-11-19 08:02:57,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:57,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:57,673 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:57,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:02:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:57,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-19 08:02:57,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 28 proven. 9 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-19 08:02:58,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:02:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-19 08:02:58,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:58,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362453347] [2023-11-19 08:02:58,513 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:58,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744280266] [2023-11-19 08:02:58,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744280266] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:02:58,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:02:58,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-11-19 08:02:58,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079654891] [2023-11-19 08:02:58,515 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:02:58,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:02:58,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:58,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:02:58,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:02:58,517 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-19 08:02:58,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:58,928 INFO L93 Difference]: Finished difference Result 126 states and 164 transitions. [2023-11-19 08:02:58,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:02:58,929 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) Word has length 87 [2023-11-19 08:02:58,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:58,931 INFO L225 Difference]: With dead ends: 126 [2023-11-19 08:02:58,931 INFO L226 Difference]: Without dead ends: 109 [2023-11-19 08:02:58,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:02:58,933 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:58,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 405 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:02:58,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-19 08:02:58,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2023-11-19 08:02:58,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 64 states have internal predecessors, (73), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 08:02:58,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 130 transitions. [2023-11-19 08:02:58,992 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 130 transitions. Word has length 87 [2023-11-19 08:02:58,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:58,992 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 130 transitions. [2023-11-19 08:02:58,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 14 states have internal predecessors, (37), 9 states have call successors, (27), 3 states have call predecessors, (27), 2 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2023-11-19 08:02:58,993 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 130 transitions. [2023-11-19 08:02:58,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-11-19 08:02:58,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:58,999 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:59,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:59,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 08:02:59,220 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:59,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:59,221 INFO L85 PathProgramCache]: Analyzing trace with hash -219918921, now seen corresponding path program 1 times [2023-11-19 08:02:59,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:59,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348104424] [2023-11-19 08:02:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:59,231 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:59,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522008683] [2023-11-19 08:02:59,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:59,233 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:59,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:02:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:02:59,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:02:59,304 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:02:59,351 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-19 08:02:59,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:02:59,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:02:59,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348104424] [2023-11-19 08:02:59,352 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:02:59,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522008683] [2023-11-19 08:02:59,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522008683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:02:59,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:02:59,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:02:59,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637011128] [2023-11-19 08:02:59,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:02:59,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:02:59,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:02:59,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:02:59,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:59,354 INFO L87 Difference]: Start difference. First operand 102 states and 130 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-19 08:02:59,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:02:59,440 INFO L93 Difference]: Finished difference Result 115 states and 143 transitions. [2023-11-19 08:02:59,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:02:59,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 91 [2023-11-19 08:02:59,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:02:59,442 INFO L225 Difference]: With dead ends: 115 [2023-11-19 08:02:59,443 INFO L226 Difference]: Without dead ends: 103 [2023-11-19 08:02:59,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:02:59,444 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 7 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:02:59,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 113 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:02:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-19 08:02:59,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2023-11-19 08:02:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 64 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 08:02:59,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 129 transitions. [2023-11-19 08:02:59,487 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 129 transitions. Word has length 91 [2023-11-19 08:02:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:02:59,488 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 129 transitions. [2023-11-19 08:02:59,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-11-19 08:02:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 129 transitions. [2023-11-19 08:02:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 08:02:59,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:02:59,490 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:02:59,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:02:59,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:59,709 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:02:59,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:02:59,709 INFO L85 PathProgramCache]: Analyzing trace with hash -2103086134, now seen corresponding path program 3 times [2023-11-19 08:02:59,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:02:59,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682527125] [2023-11-19 08:02:59,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:02:59,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:02:59,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:02:59,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1462281235] [2023-11-19 08:02:59,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 08:02:59,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:02:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:02:59,723 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:02:59,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:02:59,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-19 08:02:59,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:02:59,805 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:02:59,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:00,465 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-19 08:03:00,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 33 proven. 23 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-19 08:03:01,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682527125] [2023-11-19 08:03:01,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:01,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462281235] [2023-11-19 08:03:01,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462281235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:01,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:03:01,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2023-11-19 08:03:01,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225371366] [2023-11-19 08:03:01,598 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:01,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:03:01,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:03:01,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:03:01,602 INFO L87 Difference]: Start difference. First operand 103 states and 129 transitions. Second operand has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-19 08:03:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:02,335 INFO L93 Difference]: Finished difference Result 200 states and 266 transitions. [2023-11-19 08:03:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:03:02,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) Word has length 101 [2023-11-19 08:03:02,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:02,341 INFO L225 Difference]: With dead ends: 200 [2023-11-19 08:03:02,341 INFO L226 Difference]: Without dead ends: 130 [2023-11-19 08:03:02,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=549, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:03:02,343 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 103 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:02,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 457 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:03:02,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-19 08:03:02,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2023-11-19 08:03:02,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 65 states have internal predecessors, (72), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2023-11-19 08:03:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 129 transitions. [2023-11-19 08:03:02,397 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 129 transitions. Word has length 101 [2023-11-19 08:03:02,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:02,399 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 129 transitions. [2023-11-19 08:03:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 16 states have internal predecessors, (44), 11 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 11 states have call predecessors, (30), 10 states have call successors, (30) [2023-11-19 08:03:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 129 transitions. [2023-11-19 08:03:02,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-19 08:03:02,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:02,402 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:02,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-19 08:03:02,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:02,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:02,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:02,623 INFO L85 PathProgramCache]: Analyzing trace with hash 502937420, now seen corresponding path program 1 times [2023-11-19 08:03:02,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:02,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178305306] [2023-11-19 08:03:02,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:02,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:02,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890612170] [2023-11-19 08:03:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:02,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:02,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:02,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:02,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:03:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:02,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:03:02,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:02,799 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-19 08:03:02,800 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:03:02,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178305306] [2023-11-19 08:03:02,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:02,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890612170] [2023-11-19 08:03:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890612170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:03:02,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:03:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:03:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399436101] [2023-11-19 08:03:02,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:03:02,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:03:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:03:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:02,803 INFO L87 Difference]: Start difference. First operand 104 states and 129 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 08:03:02,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:02,894 INFO L93 Difference]: Finished difference Result 125 states and 152 transitions. [2023-11-19 08:03:02,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:03:02,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 101 [2023-11-19 08:03:02,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:02,896 INFO L225 Difference]: With dead ends: 125 [2023-11-19 08:03:02,896 INFO L226 Difference]: Without dead ends: 86 [2023-11-19 08:03:02,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:03:02,898 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 0 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:02,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:03:02,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-19 08:03:02,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-19 08:03:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 53 states have (on average 1.0943396226415094) internal successors, (58), 54 states have internal predecessors, (58), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-19 08:03:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 101 transitions. [2023-11-19 08:03:02,939 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 101 transitions. Word has length 101 [2023-11-19 08:03:02,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:02,940 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 101 transitions. [2023-11-19 08:03:02,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-11-19 08:03:02,940 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 101 transitions. [2023-11-19 08:03:02,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 08:03:02,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:02,942 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:02,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:03,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 08:03:03,157 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:03,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:03,157 INFO L85 PathProgramCache]: Analyzing trace with hash 845989083, now seen corresponding path program 2 times [2023-11-19 08:03:03,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:03,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729383752] [2023-11-19 08:03:03,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:03,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:03,170 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:03,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075480352] [2023-11-19 08:03:03,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:03:03,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:03,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:03,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:03,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:03:03,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:03:03,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:03:03,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-19 08:03:03,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-19 08:03:04,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 331 trivial. 0 not checked. [2023-11-19 08:03:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729383752] [2023-11-19 08:03:09,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075480352] [2023-11-19 08:03:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075480352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:03:09,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:03:09,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 30 [2023-11-19 08:03:09,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384313515] [2023-11-19 08:03:09,834 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:09,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-19 08:03:09,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:09,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-19 08:03:09,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2023-11-19 08:03:09,836 INFO L87 Difference]: Start difference. First operand 86 states and 101 transitions. Second operand has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 15 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-19 08:03:10,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:10,727 INFO L93 Difference]: Finished difference Result 110 states and 126 transitions. [2023-11-19 08:03:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-19 08:03:10,728 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 15 states have call predecessors, (34), 16 states have call successors, (34) Word has length 106 [2023-11-19 08:03:10,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:10,729 INFO L225 Difference]: With dead ends: 110 [2023-11-19 08:03:10,729 INFO L226 Difference]: Without dead ends: 85 [2023-11-19 08:03:10,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=228, Invalid=1254, Unknown=0, NotChecked=0, Total=1482 [2023-11-19 08:03:10,731 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 37 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:10,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 503 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 08:03:10,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-19 08:03:10,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-19 08:03:10,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 54 states have (on average 1.0) internal successors, (54), 54 states have internal predecessors, (54), 19 states have call successors, (19), 12 states have call predecessors, (19), 11 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-19 08:03:10,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2023-11-19 08:03:10,760 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 106 [2023-11-19 08:03:10,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:10,761 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2023-11-19 08:03:10,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.7666666666666666) internal successors, (53), 28 states have internal predecessors, (53), 16 states have call successors, (35), 3 states have call predecessors, (35), 3 states have return successors, (34), 15 states have call predecessors, (34), 16 states have call successors, (34) [2023-11-19 08:03:10,761 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2023-11-19 08:03:10,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 08:03:10,764 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:03:10,764 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:10,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-19 08:03:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:10,980 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:03:10,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:03:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -419411602, now seen corresponding path program 1 times [2023-11-19 08:03:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:03:10,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052786011] [2023-11-19 08:03:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:10,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:03:10,991 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:03:10,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989885328] [2023-11-19 08:03:10,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:03:10,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:10,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:03:10,993 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:03:11,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:03:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:03:11,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-19 08:03:11,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:03:12,364 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 64 proven. 72 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-19 08:03:12,364 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:03:14,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:03:14,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052786011] [2023-11-19 08:03:14,453 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:03:14,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989885328] [2023-11-19 08:03:14,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989885328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:03:14,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:03:14,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-11-19 08:03:14,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573579261] [2023-11-19 08:03:14,455 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:03:14,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:03:14,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:03:14,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:03:14,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-11-19 08:03:14,457 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-19 08:03:15,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:03:15,072 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2023-11-19 08:03:15,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:03:15,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 112 [2023-11-19 08:03:15,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:03:15,074 INFO L225 Difference]: With dead ends: 85 [2023-11-19 08:03:15,074 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:03:15,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2023-11-19 08:03:15,075 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:03:15,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 357 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:03:15,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:03:15,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:03:15,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 08:03:15,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:03:15,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2023-11-19 08:03:15,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:03:15,077 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:03:15,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2023-11-19 08:03:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:03:15,077 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:03:15,079 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:03:15,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:03:15,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:03:15,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 08:03:17,103 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) [2023-11-19 08:03:17,104 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2023-11-19 08:03:17,104 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 22 63) no Hoare annotation was computed. [2023-11-19 08:03:17,104 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse1 (* 2 .cse6))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse1 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse2 .cse3 .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse7) (+ .cse1 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-19 08:03:17,104 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 08:03:17,104 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-11-19 08:03:17,105 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 08:03:17,105 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2023-11-19 08:03:17,105 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 2) [2023-11-19 08:03:17,105 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse1 (* 2 .cse6))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse1 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse2 .cse3 .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse7) (+ .cse1 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-19 08:03:17,106 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse1 (* 2 .cse6))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse1 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse2 .cse3 .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse7) (+ .cse1 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-19 08:03:17,106 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 08:03:17,106 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-11-19 08:03:17,106 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2023-11-19 08:03:17,106 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 46 58) the Hoare annotation is: (let ((.cse11 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse7 (* 2 .cse11)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse1 (= .cse11 1)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse4 (= 2 .cse12)) (.cse5 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse10 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~d~0#1|)) (.cse13 (+ .cse7 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse12))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse6 .cse5 (= .cse7 |ULTIMATE.start_main_~d~0#1|) .cse8 .cse9 .cse10) (and (= (+ |ULTIMATE.start_main_~r~0#1| .cse11) .cse12) .cse0 (<= 1 .cse11) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) .cse13)) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse6 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse8 .cse9 .cse10 (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse12) .cse13)) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse11) .cse8 .cse9))))) [2023-11-19 08:03:17,107 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~d~0#1| .cse1)) (.cse2 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) .cse0 (= .cse1 1) (= |ULTIMATE.start_main_~r~0#1| 0) (= 2 |ULTIMATE.start_main_~q~0#1|) (= 2 .cse2)) (and .cse0 .cse3 (<= 1 .cse1) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse2)) (and .cse0 .cse3 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| .cse2))))) [2023-11-19 08:03:17,107 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 08:03:17,107 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse6 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse7 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse2 (<= |ULTIMATE.start_main_~r~0#1| 2)) (.cse3 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse4 (<= 1 |ULTIMATE.start_main_~d~0#1|)) (.cse5 (= |ULTIMATE.start_main_~r~0#1| .cse7)) (.cse1 (* 2 .cse6))) (or (and .cse0 (= 2 |ULTIMATE.start_main_~p~0#1|) (= .cse1 |ULTIMATE.start_main_~d~0#1|) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse6) .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse0 .cse2 .cse3 .cse4 .cse5 (= (mod |ULTIMATE.start_main_~d~0#1| 2) 0) (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse7) (+ .cse1 |ULTIMATE.start_main_~r~0#1|)))))) [2023-11-19 08:03:17,107 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2023-11-19 08:03:17,108 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-11-19 08:03:17,108 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse11 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse7 (* 2 .cse11)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse1 (= .cse11 1)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse4 (= 2 .cse12)) (.cse5 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse10 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~d~0#1|)) (.cse13 (+ .cse7 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse12))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse6 .cse5 (= .cse7 |ULTIMATE.start_main_~d~0#1|) .cse8 .cse9 .cse10) (and (= (+ |ULTIMATE.start_main_~r~0#1| .cse11) .cse12) .cse0 (<= 1 .cse11) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) .cse13)) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse6 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse8 .cse9 .cse10 (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse12) .cse13)) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse11) .cse8 .cse9))))) [2023-11-19 08:03:17,108 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse11 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse7 (* 2 .cse11)) (.cse12 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse1 (= .cse11 1)) (.cse2 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse3 (= 2 |ULTIMATE.start_main_~q~0#1|)) (.cse4 (= 2 .cse12)) (.cse5 (= 2 |ULTIMATE.start_main_~p~0#1|)) (.cse6 (<= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~r~0#1|))) (.cse10 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) |ULTIMATE.start_main_~d~0#1|)) (.cse13 (+ .cse7 |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse8 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse9 (= |ULTIMATE.start_main_~r~0#1| .cse12))) (or (and (= |ULTIMATE.start_main_~d~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse3 .cse4 (= 2 |ULTIMATE.start_main_~d~0#1|)) (and .cse6 .cse5 (= .cse7 |ULTIMATE.start_main_~d~0#1|) .cse8 .cse9 .cse10) (and (= (+ |ULTIMATE.start_main_~r~0#1| .cse11) .cse12) .cse0 (<= 1 .cse11) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~d~0#1| .cse12) .cse13)) (and (= |ULTIMATE.start_main_~p~0#1| 4) .cse6 (<= |ULTIMATE.start_main_~r~0#1| 2) .cse8 .cse9 .cse10 (= (+ (div |ULTIMATE.start_main_~d~0#1| 2) .cse12) .cse13)) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| .cse11) .cse8 .cse9))))) [2023-11-19 08:03:17,108 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2023-11-19 08:03:17,109 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-19 08:03:17,109 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-11-19 08:03:17,109 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-11-19 08:03:17,109 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-11-19 08:03:17,109 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-11-19 08:03:17,109 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-11-19 08:03:17,110 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-11-19 08:03:17,110 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-11-19 08:03:17,110 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-11-19 08:03:17,110 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-11-19 08:03:17,114 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:03:17,117 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:03:17,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:03:17 BoogieIcfgContainer [2023-11-19 08:03:17,161 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:03:17,162 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:03:17,162 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:03:17,162 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:03:17,163 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:02:44" (3/4) ... [2023-11-19 08:03:17,167 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:03:17,173 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 08:03:17,174 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 08:03:17,182 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 08:03:17,182 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:03:17,182 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:03:17,183 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:03:17,304 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:03:17,305 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:03:17,305 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:03:17,306 INFO L158 Benchmark]: Toolchain (without parser) took 33167.78ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 106.3MB in the beginning and 132.6MB in the end (delta: -26.2MB). Peak memory consumption was 132.3MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,306 INFO L158 Benchmark]: CDTParser took 0.70ms. Allocated memory is still 100.7MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:03:17,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.47ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 95.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.44ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,308 INFO L158 Benchmark]: Boogie Preprocessor took 24.49ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,308 INFO L158 Benchmark]: RCFGBuilder took 340.83ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 80.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,309 INFO L158 Benchmark]: TraceAbstraction took 32344.53ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 79.9MB in the beginning and 136.8MB in the end (delta: -56.9MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,309 INFO L158 Benchmark]: Witness Printer took 143.26ms. Allocated memory is still 299.9MB. Free memory was 136.8MB in the beginning and 132.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:03:17,312 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.70ms. Allocated memory is still 100.7MB. Free memory is still 50.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.47ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 95.1MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.44ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.49ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 92.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 340.83ms. Allocated memory is still 142.6MB. Free memory was 92.1MB in the beginning and 80.8MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 32344.53ms. Allocated memory was 142.6MB in the beginning and 299.9MB in the end (delta: 157.3MB). Free memory was 79.9MB in the beginning and 136.8MB in the end (delta: -56.9MB). Peak memory consumption was 144.8MB. Max. memory is 16.1GB. * Witness Printer took 143.26ms. Allocated memory is still 299.9MB. Free memory was 136.8MB in the beginning and 132.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 32.2s, OverallIterations: 15, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 391 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 345 mSDsluCounter, 3410 SdHoareTripleChecker+Invalid, 3.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2819 mSDsCounter, 331 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2066 IncrementalHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 331 mSolverCounterUnsat, 591 mSDtfsCounter, 2066 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1578 GetRequests, 1386 SyntacticMatches, 3 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=9, InterpolantAutomatonStates: 135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 15 MinimizatonAttempts, 96 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 107 PreInvPairs, 145 NumberOfFragments, 988 HoareAnnotationTreeSize, 107 FomulaSimplifications, 25438 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 14 FomulaSimplificationsInter, 1024 FormulaSimplificationTreeSizeReductionInter, 1.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 18.6s InterpolantComputationTime, 1038 NumberOfCodeBlocks, 1011 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1517 ConstructedInterpolants, 0 QuantifiedInterpolants, 10733 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2074 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 4217/4500 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((d == 1) && (p == 1)) && ((B % 4294967296) == 1)) && (r == 0)) && (2 == q)) && (2 == (A % 4294967296))) || ((((((2 == p) && ((B % 4294967296) == 1)) && (r == 0)) && (2 == q)) && (2 == (A % 4294967296))) && (2 == d))) || ((((((d <= (2 * r)) && (2 == p)) && ((2 * (B % 4294967296)) == d)) && (q == 0)) && (r == (A % 4294967296))) && ((r + 1) <= d))) || (((((((r + (B % 4294967296)) == (A % 4294967296)) && (p == 1)) && (1 <= (B % 4294967296))) && (0 <= r)) && (q == 1)) && ((d + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) || (((((((p == 4) && (d <= (2 * r))) && (r <= 2)) && (q == 0)) && (r == (A % 4294967296))) && ((r + 1) <= d)) && (((d / 2) + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) || ((((p == 1) && (d == (B % 4294967296))) && (q == 0)) && (r == (A % 4294967296)))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((((d <= (2 * r)) && (2 == p)) && ((2 * (B % 4294967296)) == d)) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == (A % 4294967296))) || ((((((p == 1) && (d == (B % 4294967296))) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == (A % 4294967296)))) || ((((((((p == 4) && (d <= (2 * r))) && (r <= 2)) && (q == 0)) && (1 <= d)) && (r == (A % 4294967296))) && ((d % 2) == 0)) && (((d / 2) + (A % 4294967296)) == ((2 * (B % 4294967296)) + r)))) RESULT: Ultimate proved your program to be correct! [2023-11-19 08:03:17,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d8379c57-000a-42d6-aa68-43e9a68e9242/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE