./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:58:01,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:58:01,484 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 21:58:01,494 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:58:01,494 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:58:01,543 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:58:01,543 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:58:01,544 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:58:01,545 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:58:01,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:58:01,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:58:01,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:58:01,551 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:58:01,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:58:01,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 21:58:01,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:58:01,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:58:01,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:58:01,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:58:01,555 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 21:58:01,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:58:01,556 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 21:58:01,557 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:58:01,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 21:58:01,559 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:58:01,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:58:01,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:58:01,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:58:01,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:01,561 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:58:01,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:58:01,563 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 21:58:01,563 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:58:01,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:58:01,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:58:01,563 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 21:58:01,564 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:58:01,564 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:58:01,564 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:58:01,564 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_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87608ec580cc80a59c7836f9aeadd0fc773dea5ebb620dd020651936daa4e397 [2023-11-06 21:58:01,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:58:01,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:58:01,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:58:01,867 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:58:01,867 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:58:01,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2023-11-06 21:58:05,077 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:58:05,308 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:58:05,309 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c [2023-11-06 21:58:05,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/data/9fbfdc8bc/44d4718e37f2494a91fcd130e652d58d/FLAGb5e40ac74 [2023-11-06 21:58:05,335 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/data/9fbfdc8bc/44d4718e37f2494a91fcd130e652d58d [2023-11-06 21:58:05,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:58:05,340 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:58:05,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:05,342 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:58:05,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:58:05,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@202ca149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05, skipping insertion in model container [2023-11-06 21:58:05,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,383 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:58:05,590 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_ad467f8c-4eb6-46fd-b991-47986c20549f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2023-11-06 21:58:05,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:05,642 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:58:05,658 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_ad467f8c-4eb6-46fd-b991-47986c20549f/sv-benchmarks/c/nla-digbench-scaling/ps6-ll_valuebound1.c[458,471] [2023-11-06 21:58:05,668 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:58:05,686 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:58:05,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05 WrapperNode [2023-11-06 21:58:05,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:58:05,689 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:05,689 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:58:05,694 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:58:05,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,730 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-11-06 21:58:05,731 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:58:05,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:58:05,732 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:58:05,732 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:58:05,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,742 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,749 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,750 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:58:05,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:58:05,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:58:05,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:58:05,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (1/1) ... [2023-11-06 21:58:05,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:58:05,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:05,786 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:58:05,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:58:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:58:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 21:58:05,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 21:58:05,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 21:58:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:58:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:58:05,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 21:58:05,824 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 21:58:05,892 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:58:05,895 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:58:06,031 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:58:06,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:58:06,038 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 21:58:06,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:06 BoogieIcfgContainer [2023-11-06 21:58:06,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:58:06,043 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:58:06,043 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:58:06,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:58:06,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:05" (1/3) ... [2023-11-06 21:58:06,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed33256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:06, skipping insertion in model container [2023-11-06 21:58:06,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:05" (2/3) ... [2023-11-06 21:58:06,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed33256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:06, skipping insertion in model container [2023-11-06 21:58:06,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:06" (3/3) ... [2023-11-06 21:58:06,050 INFO L112 eAbstractionObserver]: Analyzing ICFG ps6-ll_valuebound1.c [2023-11-06 21:58:06,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:58:06,066 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 21:58:06,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:58:06,125 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=LoopsAndPotentialCycles, 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;@9743446, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:58:06,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 21:58:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2023-11-06 21:58:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:58:06,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:06,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:06,139 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:06,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:06,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2023-11-06 21:58:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:06,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488068963] [2023-11-06 21:58:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:06,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:06,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488068963] [2023-11-06 21:58:06,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-06 21:58:06,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949935202] [2023-11-06 21:58:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:06,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:06,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:06,301 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:06,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 21:58:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:06,423 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-06 21:58:06,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:58:06,463 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:06,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949935202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:06,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:06,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:58:06,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682224699] [2023-11-06 21:58:06,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:06,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 21:58:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:06,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 21:58:06,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:58:06,530 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:58:06,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:06,550 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-11-06 21:58:06,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 21:58:06,554 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-06 21:58:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:06,562 INFO L225 Difference]: With dead ends: 45 [2023-11-06 21:58:06,562 INFO L226 Difference]: Without dead ends: 20 [2023-11-06 21:58:06,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 21:58:06,570 INFO L413 NwaCegarLoop]: 27 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, 27 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 [2023-11-06 21:58:06,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:06,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-06 21:58:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-06 21:58:06,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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) [2023-11-06 21:58:06,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-06 21:58:06,613 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-11-06 21:58:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:06,614 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-06 21:58:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 21:58:06,614 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-06 21:58:06,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 21:58:06,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:06,617 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:06,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:06,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:06,822 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:06,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:06,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2023-11-06 21:58:06,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:06,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637064143] [2023-11-06 21:58:06,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:06,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:06,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672982788] [2023-11-06 21:58:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:06,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:06,847 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:06,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 21:58:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:06,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 21:58:06,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:07,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:58:07,139 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:58:07,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:07,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637064143] [2023-11-06 21:58:07,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:07,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672982788] [2023-11-06 21:58:07,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672982788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:58:07,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:58:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 21:58:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924846073] [2023-11-06 21:58:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:07,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 21:58:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:07,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 21:58:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 21:58:07,145 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:58:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:07,274 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-11-06 21:58:07,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 21:58:07,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-11-06 21:58:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:07,276 INFO L225 Difference]: With dead ends: 31 [2023-11-06 21:58:07,277 INFO L226 Difference]: Without dead ends: 27 [2023-11-06 21:58:07,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:58:07,280 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 8 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:07,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 21:58:07,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-11-06 21:58:07,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-11-06 21:58:07,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 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) [2023-11-06 21:58:07,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-11-06 21:58:07,305 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-11-06 21:58:07,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:07,306 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-11-06 21:58:07,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 21:58:07,306 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-11-06 21:58:07,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 21:58:07,307 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:07,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:07,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:07,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:07,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2023-11-06 21:58:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411197119] [2023-11-06 21:58:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:07,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:07,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [960654733] [2023-11-06 21:58:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:07,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:07,529 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:07,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 21:58:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:07,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 21:58:07,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 21:58:07,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 21:58:09,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411197119] [2023-11-06 21:58:09,019 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:09,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960654733] [2023-11-06 21:58:09,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960654733] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 21:58:09,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 21:58:09,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-11-06 21:58:09,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481256687] [2023-11-06 21:58:09,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:58:09,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:58:09,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:09,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:58:09,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 21:58:09,022 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:58:09,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:09,085 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-11-06 21:58:09,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:58:09,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-11-06 21:58:09,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:09,088 INFO L225 Difference]: With dead ends: 33 [2023-11-06 21:58:09,088 INFO L226 Difference]: Without dead ends: 29 [2023-11-06 21:58:09,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:58:09,090 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:09,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 64 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-06 21:58:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-06 21:58:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-06 21:58:09,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-11-06 21:58:09,105 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-11-06 21:58:09,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:09,105 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-11-06 21:58:09,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 21:58:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-11-06 21:58:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-06 21:58:09,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:09,107 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:09,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:09,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:09,313 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:09,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:09,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2023-11-06 21:58:09,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:09,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712487913] [2023-11-06 21:58:09,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:09,330 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:09,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1625232347] [2023-11-06 21:58:09,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:09,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:09,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:09,332 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:09,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 21:58:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:58:09,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-06 21:58:09,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:58:09,658 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:10,121 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 21:58:10,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:10,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712487913] [2023-11-06 21:58:10,122 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:10,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625232347] [2023-11-06 21:58:10,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625232347] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:10,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:10,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-11-06 21:58:10,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830437429] [2023-11-06 21:58:10,124 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:10,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 21:58:10,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:10,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 21:58:10,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:58:10,127 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-06 21:58:10,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:10,859 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2023-11-06 21:58:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 21:58:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) Word has length 36 [2023-11-06 21:58:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:10,862 INFO L225 Difference]: With dead ends: 52 [2023-11-06 21:58:10,862 INFO L226 Difference]: Without dead ends: 42 [2023-11-06 21:58:10,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-11-06 21:58:10,864 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 19 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:10,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 136 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 21:58:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-06 21:58:10,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-06 21:58:10,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 28 states have (on average 1.0357142857142858) internal successors, (29), 28 states have internal predecessors, (29), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 21:58:10,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-06 21:58:10,888 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 36 [2023-11-06 21:58:10,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:10,888 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-06 21:58:10,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 9 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-11-06 21:58:10,889 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-06 21:58:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 21:58:10,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 21:58:10,891 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:58:10,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 21:58:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:11,097 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 21:58:11,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:58:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1013596503, now seen corresponding path program 2 times [2023-11-06 21:58:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 21:58:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560934894] [2023-11-06 21:58:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:58:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 21:58:11,114 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 21:58:11,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [777612248] [2023-11-06 21:58:11,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:58:11,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:11,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:58:11,116 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 21:58:11,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 21:58:11,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:58:11,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:58:11,199 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 21:58:11,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:58:11,424 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 70 proven. 3 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-06 21:58:11,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:58:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 21:58:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 21:58:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560934894] [2023-11-06 21:58:11,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 21:58:11,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777612248] [2023-11-06 21:58:11,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777612248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:58:11,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:58:11,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-06 21:58:11,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256871812] [2023-11-06 21:58:11,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:58:11,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-06 21:58:11,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 21:58:11,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-06 21:58:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-06 21:58:11,609 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-06 21:58:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 21:58:11,676 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2023-11-06 21:58:11,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 21:58:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 12 states have call successors, (16) Word has length 57 [2023-11-06 21:58:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 21:58:11,677 INFO L225 Difference]: With dead ends: 44 [2023-11-06 21:58:11,677 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 21:58:11,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2023-11-06 21:58:11,679 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 3 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 21:58:11,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 21:58:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 21:58:11,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 21:58:11,681 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) [2023-11-06 21:58:11,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 21:58:11,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2023-11-06 21:58:11,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 21:58:11,681 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 21:58:11,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 13 states have internal predecessors, (38), 12 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 11 states have call predecessors, (16), 12 states have call successors, (16) [2023-11-06 21:58:11,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 21:58:11,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 21:58:11,684 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 21:58:11,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 21:58:11,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 21:58:11,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 21:58:12,082 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 21:58:12,083 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~k~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) (<= |ULTIMATE.start_main_~k~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2023-11-06 21:58:12,083 INFO L899 garLoopResultBuilder]: For program point L29-1(lines 28 37) no Hoare annotation was computed. [2023-11-06 21:58:12,083 INFO L902 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2023-11-06 21:58:12,084 INFO L895 garLoopResultBuilder]: At program point L21-1(line 21) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) [2023-11-06 21:58:12,084 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 21:58:12,084 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 42) the Hoare annotation is: true [2023-11-06 21:58:12,084 INFO L899 garLoopResultBuilder]: For program point L40(line 40) no Hoare annotation was computed. [2023-11-06 21:58:12,084 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 21:58:12,084 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 21:58:12,084 INFO L895 garLoopResultBuilder]: At program point L28-2(lines 28 37) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~k~0#1| 1) (= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~x~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1)) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (= |ULTIMATE.start_main_~c~0#1| 0) (<= |ULTIMATE.start_main_~k~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2023-11-06 21:58:12,085 INFO L895 garLoopResultBuilder]: At program point L28-3(lines 28 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) .cse0)))) [2023-11-06 21:58:12,085 INFO L899 garLoopResultBuilder]: For program point L22(line 22) no Hoare annotation was computed. [2023-11-06 21:58:12,085 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0) (= (+ (* 6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 2 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* 5 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (+ (* |ULTIMATE.start_main_~x~0#1| 12) .cse0)))) [2023-11-06 21:58:12,085 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 6 8) the Hoare annotation is: true [2023-11-06 21:58:12,085 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-11-06 21:58:12,085 INFO L899 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-11-06 21:58:12,086 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-11-06 21:58:12,090 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-06 21:58:12,092 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 21:58:12,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:12 BoogieIcfgContainer [2023-11-06 21:58:12,104 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 21:58:12,105 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 21:58:12,106 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 21:58:12,106 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 21:58:12,107 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:06" (3/4) ... [2023-11-06 21:58:12,109 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 21:58:12,113 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-11-06 21:58:12,113 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-11-06 21:58:12,118 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 21:58:12,118 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 21:58:12,119 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 21:58:12,119 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 21:58:12,180 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 21:58:12,180 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 21:58:12,180 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 21:58:12,181 INFO L158 Benchmark]: Toolchain (without parser) took 6841.70ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 101.6MB in the beginning and 123.1MB in the end (delta: -21.5MB). Peak memory consumption was 35.4MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,182 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 89.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:58:12,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.67ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 90.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.75ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 89.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,183 INFO L158 Benchmark]: Boogie Preprocessor took 21.44ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,184 INFO L158 Benchmark]: RCFGBuilder took 286.62ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 77.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,184 INFO L158 Benchmark]: TraceAbstraction took 6061.48ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 76.9MB in the beginning and 126.2MB in the end (delta: -49.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,185 INFO L158 Benchmark]: Witness Printer took 75.23ms. Allocated memory is still 197.1MB. Free memory was 126.2MB in the beginning and 123.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-06 21:58:12,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory was 89.8MB in the beginning and 89.7MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.67ms. Allocated memory is still 142.6MB. Free memory was 101.2MB in the beginning and 90.4MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.75ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 89.0MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.44ms. Allocated memory is still 142.6MB. Free memory was 89.0MB in the beginning and 87.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 286.62ms. Allocated memory is still 142.6MB. Free memory was 87.8MB in the beginning and 77.8MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 6061.48ms. Allocated memory was 142.6MB in the beginning and 197.1MB in the end (delta: 54.5MB). Free memory was 76.9MB in the beginning and 126.2MB in the end (delta: -49.3MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. * Witness Printer took 75.23ms. Allocated memory is still 197.1MB. Free memory was 126.2MB in the beginning and 123.1MB in the end (delta: 3.1MB). 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: 12]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.0s, OverallIterations: 5, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 297 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 208 IncrementalHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 94 mSDtfsCounter, 208 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 275 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=4, InterpolantAutomatonStates: 38, 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, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 28 PreInvPairs, 42 NumberOfFragments, 153 HoareAnnotationTreeSize, 28 FomulaSimplifications, 377 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 146 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 1098 SizeOfPredicates, 10 NumberOfNonLiveVariables, 425 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 270/286 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((((k == 1) && (c == 1)) && (x == 1)) && (y == 1)) || (((((0 <= k) && (c == 0)) && (k <= 1)) && (y == 0)) && (x == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-06 21:58:12,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ad467f8c-4eb6-46fd-b991-47986c20549f/bin/uautomizer-verify-WvqO1wxjHP/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