./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/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_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/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_90369019-fb6c-453d-87ac-c7d717b81b50/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 d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:29,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:29,971 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 08:05:29,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:29,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:30,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:30,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:30,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:30,007 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:30,008 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:30,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:30,010 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:30,010 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:30,011 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:30,012 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:30,012 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:05:30,013 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:30,013 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:05:30,014 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:30,015 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:30,015 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:30,016 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:30,032 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:05:30,033 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:30,033 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:30,034 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:30,035 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:30,035 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:30,036 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:30,036 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:30,037 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:30,037 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:30,038 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:30,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:30,039 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:30,039 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:30,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:30,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:30,040 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:30,041 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_90369019-fb6c-453d-87ac-c7d717b81b50/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2bc2a3f53718ecf47344b6d9b2d76a5698712f748ff03cd831a90a334f72c9d [2023-11-19 08:05:30,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:30,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:30,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:30,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:30,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:30,379 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-19 08:05:33,539 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:33,770 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:33,771 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c [2023-11-19 08:05:33,779 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/data/f39a84468/277e57c3b4a246a9b741d1360282f576/FLAGff614f1ef [2023-11-19 08:05:33,795 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/data/f39a84468/277e57c3b4a246a9b741d1360282f576 [2023-11-19 08:05:33,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:33,800 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:33,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:33,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:33,807 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:33,808 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:33" (1/1) ... [2023-11-19 08:05:33,809 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56afcc60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:33, skipping insertion in model container [2023-11-19 08:05:33,809 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:33" (1/1) ... [2023-11-19 08:05:33,868 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:34,080 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_90369019-fb6c-453d-87ac-c7d717b81b50/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2023-11-19 08:05:34,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:34,104 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:34,117 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_90369019-fb6c-453d-87ac-c7d717b81b50/sv-benchmarks/c/nla-digbench-scaling/prodbin-ll_valuebound2.c[537,550] [2023-11-19 08:05:34,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:34,140 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:34,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34 WrapperNode [2023-11-19 08:05:34,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:34,142 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:34,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:34,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:34,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,158 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,179 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2023-11-19 08:05:34,180 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:34,181 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:34,181 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:34,181 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:34,192 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,192 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,198 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,205 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,206 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:34,208 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:34,208 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:34,208 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:34,209 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (1/1) ... [2023-11-19 08:05:34,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:34,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:34,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:34,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:34,294 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 08:05:34,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 08:05:34,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:34,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:34,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 08:05:34,296 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 08:05:34,369 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:34,372 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:34,615 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:34,627 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:34,627 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:34,631 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:34 BoogieIcfgContainer [2023-11-19 08:05:34,631 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:34,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:34,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:34,638 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:34,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:33" (1/3) ... [2023-11-19 08:05:34,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cafbe78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:34, skipping insertion in model container [2023-11-19 08:05:34,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:34" (2/3) ... [2023-11-19 08:05:34,640 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cafbe78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:34, skipping insertion in model container [2023-11-19 08:05:34,640 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:34" (3/3) ... [2023-11-19 08:05:34,642 INFO L112 eAbstractionObserver]: Analyzing ICFG prodbin-ll_valuebound2.c [2023-11-19 08:05:34,662 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:34,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:34,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:34,728 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;@7d8c9189, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:34,728 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:34,732 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:05:34,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:05:34,741 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:34,742 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 08:05:34,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:34,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:34,749 INFO L85 PathProgramCache]: Analyzing trace with hash -861605892, now seen corresponding path program 1 times [2023-11-19 08:05:34,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:34,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724630276] [2023-11-19 08:05:34,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:34,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:34,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:34,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724630276] [2023-11-19 08:05:34,891 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-19 08:05:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320576192] [2023-11-19 08:05:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:34,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:34,894 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:34,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:05:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:35,012 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-19 08:05:35,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:35,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:05:35,060 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320576192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:35,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:05:35,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975172943] [2023-11-19 08:05:35,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:35,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 08:05:35,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:35,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 08:05:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 08:05:35,119 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 08:05:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:35,154 INFO L93 Difference]: Finished difference Result 51 states and 71 transitions. [2023-11-19 08:05:35,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 08:05:35,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 08:05:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:35,168 INFO L225 Difference]: With dead ends: 51 [2023-11-19 08:05:35,168 INFO L226 Difference]: Without dead ends: 23 [2023-11-19 08:05:35,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 08:05:35,178 INFO L413 NwaCegarLoop]: 31 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, 31 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 08:05:35,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:35,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-19 08:05:35,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-19 08:05:35,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:05:35,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-19 08:05:35,230 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 24 [2023-11-19 08:05:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:35,231 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-19 08:05:35,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 08:05:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-19 08:05:35,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:05:35,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:35,234 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 08:05:35,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:35,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 08:05:35,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:35,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:35,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2010313222, now seen corresponding path program 1 times [2023-11-19 08:05:35,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716645960] [2023-11-19 08:05:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:35,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:35,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424461010] [2023-11-19 08:05:35,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:35,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:35,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:35,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:35,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:05:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:35,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 08:05:35,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:36,010 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 08:05:36,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:36,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:36,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716645960] [2023-11-19 08:05:36,011 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424461010] [2023-11-19 08:05:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424461010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:36,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:36,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-19 08:05:36,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013203865] [2023-11-19 08:05:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:36,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:05:36,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:36,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:05:36,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:05:36,015 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:05:36,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:36,149 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-19 08:05:36,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 08:05:36,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-11-19 08:05:36,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:36,151 INFO L225 Difference]: With dead ends: 39 [2023-11-19 08:05:36,151 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 08:05:36,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:05:36,153 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:36,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 102 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:05:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 08:05:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2023-11-19 08:05:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:05:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-19 08:05:36,165 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 24 [2023-11-19 08:05:36,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:36,166 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-19 08:05:36,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-19 08:05:36,167 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-19 08:05:36,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 08:05:36,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:36,168 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:36,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:36,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:36,383 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:36,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:36,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1371702355, now seen corresponding path program 1 times [2023-11-19 08:05:36,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:36,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676977906] [2023-11-19 08:05:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:36,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:36,410 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:36,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541742122] [2023-11-19 08:05:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:36,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:36,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:36,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:05:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:36,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 08:05:36,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:05:36,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:37,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:37,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676977906] [2023-11-19 08:05:37,540 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:37,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541742122] [2023-11-19 08:05:37,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541742122] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:37,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:37,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-19 08:05:37,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482269267] [2023-11-19 08:05:37,541 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 08:05:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 08:05:37,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:05:37,543 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:05:37,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:37,825 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-11-19 08:05:37,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:05:37,826 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-11-19 08:05:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:37,827 INFO L225 Difference]: With dead ends: 53 [2023-11-19 08:05:37,827 INFO L226 Difference]: Without dead ends: 32 [2023-11-19 08:05:37,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:05:37,829 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:37,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 98 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:05:37,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-11-19 08:05:37,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-11-19 08:05:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:05:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2023-11-19 08:05:37,848 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 33 [2023-11-19 08:05:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:37,848 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2023-11-19 08:05:37,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:05:37,849 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2023-11-19 08:05:37,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-19 08:05:37,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:37,853 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:37,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:38,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:38,075 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:38,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:38,076 INFO L85 PathProgramCache]: Analyzing trace with hash 403305007, now seen corresponding path program 1 times [2023-11-19 08:05:38,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:38,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070187486] [2023-11-19 08:05:38,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:38,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:38,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:38,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114974162] [2023-11-19 08:05:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:38,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:38,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:38,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:38,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:05:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:38,176 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-19 08:05:38,179 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:38,542 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 08:05:38,543 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:39,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:39,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070187486] [2023-11-19 08:05:39,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:39,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114974162] [2023-11-19 08:05:39,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114974162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:05:39,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:05:39,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-11-19 08:05:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669107600] [2023-11-19 08:05:39,232 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:39,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 08:05:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 08:05:39,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:05:39,234 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:05:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:39,517 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2023-11-19 08:05:39,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 08:05:39,518 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2023-11-19 08:05:39,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:39,519 INFO L225 Difference]: With dead ends: 44 [2023-11-19 08:05:39,519 INFO L226 Difference]: Without dead ends: 42 [2023-11-19 08:05:39,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:05:39,522 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:39,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 131 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:05:39,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-19 08:05:39,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2023-11-19 08:05:39,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 28 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:05:39,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-11-19 08:05:39,533 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 33 [2023-11-19 08:05:39,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:39,534 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-11-19 08:05:39,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:05:39,534 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-11-19 08:05:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-19 08:05:39,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:39,536 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:39,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:39,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:39,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:39,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:39,750 INFO L85 PathProgramCache]: Analyzing trace with hash 98867282, now seen corresponding path program 1 times [2023-11-19 08:05:39,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:39,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402110338] [2023-11-19 08:05:39,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:39,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:39,782 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:39,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161667371] [2023-11-19 08:05:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:39,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:39,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:39,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:39,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:05:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:39,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 08:05:39,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:39,916 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:05:39,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:05:39,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:39,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402110338] [2023-11-19 08:05:39,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:39,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161667371] [2023-11-19 08:05:39,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161667371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:39,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:39,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:05:39,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642109214] [2023-11-19 08:05:39,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:39,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:39,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:39,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:39,931 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:05:40,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:40,013 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2023-11-19 08:05:40,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:40,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2023-11-19 08:05:40,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:40,017 INFO L225 Difference]: With dead ends: 50 [2023-11-19 08:05:40,017 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 08:05:40,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:05:40,020 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:40,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:40,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 08:05:40,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-19 08:05:40,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 32 states have internal predecessors, (34), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 08:05:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-11-19 08:05:40,050 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 39 [2023-11-19 08:05:40,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:40,052 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-11-19 08:05:40,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 6 states have internal predecessors, (21), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:05:40,053 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-11-19 08:05:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 08:05:40,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:40,055 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-19 08:05:40,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:40,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:40,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:40,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:40,270 INFO L85 PathProgramCache]: Analyzing trace with hash 836076312, now seen corresponding path program 1 times [2023-11-19 08:05:40,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:40,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116260918] [2023-11-19 08:05:40,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:40,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:40,284 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 08:05:40,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747936420] [2023-11-19 08:05:40,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:40,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:40,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:05:40,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:05:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:40,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-19 08:05:40,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:05:41,254 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 08:05:41,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:05:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-19 08:05:41,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:41,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116260918] [2023-11-19 08:05:41,969 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 08:05:41,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747936420] [2023-11-19 08:05:41,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747936420] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:05:41,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 08:05:41,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 21 [2023-11-19 08:05:41,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730809936] [2023-11-19 08:05:41,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 08:05:41,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 08:05:41,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:41,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 08:05:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:05:41,974 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-19 08:05:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:42,258 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-11-19 08:05:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:05:42,259 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 42 [2023-11-19 08:05:42,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:42,259 INFO L225 Difference]: With dead ends: 54 [2023-11-19 08:05:42,260 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:05:42,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:05:42,261 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 14 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:42,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 156 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:05:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:05:42,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:05:42,262 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 08:05:42,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:05:42,263 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2023-11-19 08:05:42,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:42,263 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:05:42,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 18 states have internal predecessors, (40), 7 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-19 08:05:42,263 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:05:42,263 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:05:42,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 08:05:42,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:05:42,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:05:42,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 08:05:42,941 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 08:05:42,941 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~a~0#1| 2) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2023-11-19 08:05:42,942 INFO L895 garLoopResultBuilder]: At program point L27-1(line 27) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~b~0#1|) (<= |ULTIMATE.start_main_~a~0#1| 2) (<= |ULTIMATE.start_main_~b~0#1| 2) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2023-11-19 08:05:42,942 INFO L902 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2023-11-19 08:05:42,942 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-19 08:05:42,942 INFO L899 garLoopResultBuilder]: For program point L46(line 46) no Hoare annotation was computed. [2023-11-19 08:05:42,942 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 08:05:42,942 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 20 49) no Hoare annotation was computed. [2023-11-19 08:05:42,942 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 45) the Hoare annotation is: (let ((.cse3 (div |ULTIMATE.start_main_~b~0#1| 2)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse2 (<= |ULTIMATE.start_main_~b~0#1| 2)) (.cse5 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse0 (* 2 |ULTIMATE.start_main_~a~0#1|)) (.cse6 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse7 (mod |ULTIMATE.start_main_~b~0#1| 2))) (or (and (= |ULTIMATE.start_main_~z~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~a~0#1| 4)) .cse2 (<= 1 (mod .cse3 2)) .cse4 (<= 0 .cse3) (= |ULTIMATE.start_main_~y~0#1| (div (+ (- 1) .cse3) 2))) (and .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse5 .cse6 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= 1 .cse7) .cse1 (= (+ |ULTIMATE.start_main_~y~0#1| 1) |ULTIMATE.start_main_~b~0#1|) .cse2 .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| .cse3) .cse1 .cse2 .cse5 (= |ULTIMATE.start_main_~x~0#1| .cse0) .cse6 .cse4 (not (= .cse7 1))))) [2023-11-19 08:05:42,943 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 08:05:42,943 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 45) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse1 (<= |ULTIMATE.start_main_~b~0#1| 2)) (.cse3 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse2 (div |ULTIMATE.start_main_~b~0#1| 2))) (and (= |ULTIMATE.start_main_~z~0#1| (* 2 |ULTIMATE.start_main_~a~0#1|)) .cse0 (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~a~0#1| 4)) .cse1 (<= 1 (mod .cse2 2)) .cse3 (<= 0 .cse2) (= |ULTIMATE.start_main_~y~0#1| (div (+ (- 1) .cse2) 2)))) (and (<= 1 (mod |ULTIMATE.start_main_~b~0#1| 2)) .cse0 (= (+ |ULTIMATE.start_main_~y~0#1| 1) |ULTIMATE.start_main_~b~0#1|) .cse1 (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse3))) [2023-11-19 08:05:42,943 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 08:05:42,943 INFO L899 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2023-11-19 08:05:42,943 INFO L899 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2023-11-19 08:05:42,943 INFO L899 garLoopResultBuilder]: For program point L39-2(lines 39 42) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse3 (div |ULTIMATE.start_main_~b~0#1| 2)) (.cse1 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse2 (<= |ULTIMATE.start_main_~b~0#1| 2)) (.cse5 (<= 1 |ULTIMATE.start_main_~b~0#1|)) (.cse0 (* 2 |ULTIMATE.start_main_~a~0#1|)) (.cse6 (= |ULTIMATE.start_main_~z~0#1| 0)) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|)) (.cse7 (mod |ULTIMATE.start_main_~b~0#1| 2))) (or (and (= |ULTIMATE.start_main_~z~0#1| .cse0) .cse1 (= |ULTIMATE.start_main_~x~0#1| (* |ULTIMATE.start_main_~a~0#1| 4)) .cse2 (<= 1 (mod .cse3 2)) .cse4 (<= 0 .cse3) (= |ULTIMATE.start_main_~y~0#1| (div (+ (- 1) .cse3) 2))) (and .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse2 .cse5 .cse6 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (and (<= 1 .cse7) .cse1 (= (+ |ULTIMATE.start_main_~y~0#1| 1) |ULTIMATE.start_main_~b~0#1|) .cse2 .cse5 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~z~0#1|) .cse4) (and (= |ULTIMATE.start_main_~y~0#1| .cse3) .cse1 .cse2 .cse5 (= |ULTIMATE.start_main_~x~0#1| .cse0) .cse6 .cse4 (not (= .cse7 1))))) [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 45) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 11) the Hoare annotation is: true [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2023-11-19 08:05:42,944 INFO L899 garLoopResultBuilder]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2023-11-19 08:05:42,945 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2023-11-19 08:05:42,945 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 18) the Hoare annotation is: true [2023-11-19 08:05:42,945 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2023-11-19 08:05:42,948 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 08:05:42,950 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:05:42,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:05:42 BoogieIcfgContainer [2023-11-19 08:05:42,966 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:05:42,967 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:05:42,967 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:05:42,970 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:05:42,970 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:34" (3/4) ... [2023-11-19 08:05:42,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:05:42,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-19 08:05:42,977 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-19 08:05:42,983 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 08:05:42,983 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:05:42,983 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:05:42,983 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:05:43,093 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:05:43,093 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:05:43,094 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:05:43,094 INFO L158 Benchmark]: Toolchain (without parser) took 9294.84ms. Allocated memory was 136.3MB in the beginning and 228.6MB in the end (delta: 92.3MB). Free memory was 72.8MB in the beginning and 113.5MB in the end (delta: -40.7MB). Peak memory consumption was 52.5MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,095 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 136.3MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:43,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 339.30ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 72.7MB in the beginning and 148.4MB in the end (delta: -75.7MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,096 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.30ms. Allocated memory is still 186.6MB. Free memory was 148.4MB in the beginning and 146.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,096 INFO L158 Benchmark]: Boogie Preprocessor took 26.14ms. Allocated memory is still 186.6MB. Free memory was 146.9MB in the beginning and 146.0MB in the end (delta: 949.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:05:43,096 INFO L158 Benchmark]: RCFGBuilder took 423.82ms. Allocated memory is still 186.6MB. Free memory was 146.0MB in the beginning and 134.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,097 INFO L158 Benchmark]: TraceAbstraction took 8332.31ms. Allocated memory was 186.6MB in the beginning and 228.6MB in the end (delta: 41.9MB). Free memory was 134.3MB in the beginning and 117.7MB in the end (delta: 16.7MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,097 INFO L158 Benchmark]: Witness Printer took 126.70ms. Allocated memory is still 228.6MB. Free memory was 117.7MB in the beginning and 113.5MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 08:05:43,100 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 136.3MB. Free memory is still 104.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 339.30ms. Allocated memory was 136.3MB in the beginning and 186.6MB in the end (delta: 50.3MB). Free memory was 72.7MB in the beginning and 148.4MB in the end (delta: -75.7MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.30ms. Allocated memory is still 186.6MB. Free memory was 148.4MB in the beginning and 146.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.14ms. Allocated memory is still 186.6MB. Free memory was 146.9MB in the beginning and 146.0MB in the end (delta: 949.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 423.82ms. Allocated memory is still 186.6MB. Free memory was 146.0MB in the beginning and 134.9MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8332.31ms. Allocated memory was 186.6MB in the beginning and 228.6MB in the end (delta: 41.9MB). Free memory was 134.3MB in the beginning and 117.7MB in the end (delta: 16.7MB). Peak memory consumption was 59.8MB. Max. memory is 16.1GB. * Witness Printer took 126.70ms. Allocated memory is still 228.6MB. Free memory was 117.7MB in the beginning and 113.5MB 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: 15]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.2s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 592 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 481 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 691 IncrementalHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 111 mSDtfsCounter, 691 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 268 GetRequests, 184 SyntacticMatches, 8 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 26 PreInvPairs, 38 NumberOfFragments, 335 HoareAnnotationTreeSize, 26 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 41 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 230 ConstructedInterpolants, 0 QuantifiedInterpolants, 1296 SizeOfPredicates, 18 NumberOfNonLiveVariables, 521 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 107/137 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: 34]: Loop Invariant Derived loop invariant: (((((((((((z == (2 * a)) && (a <= 2)) && (x == (a * 4))) && (b <= 2)) && (1 <= ((b / 2) % 2))) && (0 <= a)) && (0 <= (b / 2))) && (y == ((-1 + (b / 2)) / 2))) || (((((((a <= 2) && (b == y)) && (b <= 2)) && (1 <= b)) && (z == 0)) && (0 <= a)) && (a == x))) || (((((((1 <= (b % 2)) && (a <= 2)) && ((y + 1) == b)) && (b <= 2)) && (1 <= b)) && (a == z)) && (0 <= a))) || ((((((((y == (b / 2)) && (a <= 2)) && (b <= 2)) && (1 <= b)) && (x == (2 * a))) && (z == 0)) && (0 <= a)) && !(((b % 2) == 1)))) RESULT: Ultimate proved your program to be correct! [2023-11-19 08:05:43,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90369019-fb6c-453d-87ac-c7d717b81b50/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