./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/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_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/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_81eeb36f-0696-4086-bed0-a5a165017b20/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 4aef2940f6d326843487f003443fc222e2136d386047f492f8bd5c7e21afc8f5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:26:17,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:26:17,334 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:26:17,344 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:26:17,345 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:26:17,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:26:17,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:26:17,394 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:26:17,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:26:17,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:26:17,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:26:17,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:26:17,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:26:17,407 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:26:17,407 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:26:17,407 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:26:17,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:26:17,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:26:17,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:26:17,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:26:17,410 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:26:17,410 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:26:17,411 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:26:17,411 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:26:17,412 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:26:17,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:26:17,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:26:17,414 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:26:17,414 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:17,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:26:17,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:26:17,417 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:26:17,417 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:26:17,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:26:17,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:26:17,418 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:26:17,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:26:17,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:26:17,419 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:26:17,419 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_81eeb36f-0696-4086-bed0-a5a165017b20/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4aef2940f6d326843487f003443fc222e2136d386047f492f8bd5c7e21afc8f5 [2023-11-06 22:26:17,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:26:17,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:26:17,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:26:17,781 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:26:17,782 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:26:17,784 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2023-11-06 22:26:21,144 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:26:21,407 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:26:21,408 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c [2023-11-06 22:26:21,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/data/1ce6124c3/c21ee32d57344a72a4982dc932a0d4f9/FLAG42dd0d970 [2023-11-06 22:26:21,438 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/data/1ce6124c3/c21ee32d57344a72a4982dc932a0d4f9 [2023-11-06 22:26:21,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:26:21,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:26:21,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:21,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:26:21,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:26:21,463 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,465 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64eba33f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21, skipping insertion in model container [2023-11-06 22:26:21,465 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,498 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:26:21,741 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_81eeb36f-0696-4086-bed0-a5a165017b20/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c[489,502] [2023-11-06 22:26:21,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:21,809 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:26:21,828 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_81eeb36f-0696-4086-bed0-a5a165017b20/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound20.c[489,502] [2023-11-06 22:26:21,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:26:21,862 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:26:21,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21 WrapperNode [2023-11-06 22:26:21,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:26:21,864 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:21,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:26:21,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:26:21,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,909 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 60 [2023-11-06 22:26:21,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:26:21,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:26:21,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:26:21,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:26:21,922 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,933 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,934 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,938 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:26:21,939 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:26:21,939 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:26:21,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:26:21,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (1/1) ... [2023-11-06 22:26:21,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:26:21,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:21,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:26:21,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:26:22,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-06 22:26:22,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-06 22:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:26:22,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:26:22,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:26:22,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-06 22:26:22,030 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-06 22:26:22,105 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:26:22,107 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:26:22,315 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:26:22,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:26:22,324 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-06 22:26:22,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:22 BoogieIcfgContainer [2023-11-06 22:26:22,327 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:26:22,330 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:26:22,330 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:26:22,335 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:26:22,335 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:26:21" (1/3) ... [2023-11-06 22:26:22,336 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a54648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:22, skipping insertion in model container [2023-11-06 22:26:22,336 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:26:21" (2/3) ... [2023-11-06 22:26:22,337 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a54648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:26:22, skipping insertion in model container [2023-11-06 22:26:22,337 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:22" (3/3) ... [2023-11-06 22:26:22,339 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound20.c [2023-11-06 22:26:22,363 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:26:22,364 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 22:26:22,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:26:22,451 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;@7d18d592, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:26:22,452 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 22:26:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-06 22:26:22,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-06 22:26:22,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:22,468 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:22,469 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:22,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1165920622, now seen corresponding path program 1 times [2023-11-06 22:26:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:22,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781043153] [2023-11-06 22:26:22,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:22,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:22,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:26:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:22,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:22,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:22,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:22,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781043153] [2023-11-06 22:26:22,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781043153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:26:22,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571345282] [2023-11-06 22:26:22,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:22,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:26:22,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:22,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:26:22,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:26:22,783 INFO L87 Difference]: Start difference. First operand has 30 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:26:22,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:22,814 INFO L93 Difference]: Finished difference Result 57 states and 89 transitions. [2023-11-06 22:26:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:26:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:26:22,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:22,828 INFO L225 Difference]: With dead ends: 57 [2023-11-06 22:26:22,828 INFO L226 Difference]: Without dead ends: 26 [2023-11-06 22:26:22,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 22:26:22,838 INFO L413 NwaCegarLoop]: 39 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, 39 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 22:26:22,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:22,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-06 22:26:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-06 22:26:22,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 22:26:22,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 35 transitions. [2023-11-06 22:26:22,890 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 35 transitions. Word has length 18 [2023-11-06 22:26:22,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:22,891 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 35 transitions. [2023-11-06 22:26:22,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 22:26:22,892 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 35 transitions. [2023-11-06 22:26:22,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 22:26:22,894 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:22,894 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:22,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:26:22,895 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:22,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:22,896 INFO L85 PathProgramCache]: Analyzing trace with hash -542319922, now seen corresponding path program 1 times [2023-11-06 22:26:22,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:22,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845118330] [2023-11-06 22:26:22,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 22:26:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:23,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-06 22:26:23,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:26:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845118330] [2023-11-06 22:26:23,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845118330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:23,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:23,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:26:23,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335635928] [2023-11-06 22:26:23,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:26:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:23,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:26:23,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:23,198 INFO L87 Difference]: Start difference. First operand 26 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:26:23,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:23,251 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2023-11-06 22:26:23,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:26:23,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2023-11-06 22:26:23,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:23,254 INFO L225 Difference]: With dead ends: 38 [2023-11-06 22:26:23,254 INFO L226 Difference]: Without dead ends: 28 [2023-11-06 22:26:23,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:26:23,258 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 5 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:23,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:23,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-06 22:26:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-06 22:26:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-06 22:26:23,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2023-11-06 22:26:23,273 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 19 [2023-11-06 22:26:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:23,275 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2023-11-06 22:26:23,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 22:26:23,276 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2023-11-06 22:26:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-06 22:26:23,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:23,277 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:23,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:26:23,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:23,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:23,280 INFO L85 PathProgramCache]: Analyzing trace with hash -540651626, now seen corresponding path program 1 times [2023-11-06 22:26:23,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:23,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835750222] [2023-11-06 22:26:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:23,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:23,315 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:23,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784856629] [2023-11-06 22:26:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:23,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:23,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:23,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:23,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:26:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:23,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:23,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:23,683 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 22:26:23,684 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:23,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:23,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835750222] [2023-11-06 22:26:23,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784856629] [2023-11-06 22:26:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784856629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:23,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:23,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:26:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907615306] [2023-11-06 22:26:23,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:23,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:26:23,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:23,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:26:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:26:23,689 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 22:26:23,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:23,858 INFO L93 Difference]: Finished difference Result 45 states and 62 transitions. [2023-11-06 22:26:23,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:23,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 19 [2023-11-06 22:26:23,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:23,861 INFO L225 Difference]: With dead ends: 45 [2023-11-06 22:26:23,861 INFO L226 Difference]: Without dead ends: 43 [2023-11-06 22:26:23,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 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 22:26:23,864 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:23,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 156 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:23,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-06 22:26:23,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2023-11-06 22:26:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 25 states have internal predecessors, (30), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:26:23,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 59 transitions. [2023-11-06 22:26:23,893 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 59 transitions. Word has length 19 [2023-11-06 22:26:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:23,894 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 59 transitions. [2023-11-06 22:26:23,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 6 states have internal predecessors, (14), 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 22:26:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 59 transitions. [2023-11-06 22:26:23,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:26:23,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:23,898 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:23,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:26:24,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:24,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:24,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash -276555716, now seen corresponding path program 1 times [2023-11-06 22:26:24,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:24,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653834056] [2023-11-06 22:26:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:24,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:24,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [376918192] [2023-11-06 22:26:24,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:24,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:24,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:24,129 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:24,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:26:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:24,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:26:24,213 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:24,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:26:24,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:24,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653834056] [2023-11-06 22:26:24,602 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376918192] [2023-11-06 22:26:24,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376918192] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:24,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:24,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-11-06 22:26:24,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48634734] [2023-11-06 22:26:24,604 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:24,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:26:24,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:24,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:26:24,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:26:24,606 INFO L87 Difference]: Start difference. First operand 42 states and 59 transitions. Second operand has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:24,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:24,873 INFO L93 Difference]: Finished difference Result 49 states and 65 transitions. [2023-11-06 22:26:24,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:26:24,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-11-06 22:26:24,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:24,881 INFO L225 Difference]: With dead ends: 49 [2023-11-06 22:26:24,881 INFO L226 Difference]: Without dead ends: 47 [2023-11-06 22:26:24,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:26:24,886 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 35 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:24,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 120 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-06 22:26:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-06 22:26:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 28 states have internal predecessors, (33), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-06 22:26:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2023-11-06 22:26:24,919 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 24 [2023-11-06 22:26:24,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:24,920 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2023-11-06 22:26:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.7) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-06 22:26:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2023-11-06 22:26:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:26:24,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:24,922 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:24,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:25,131 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:25,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:25,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1836785898, now seen corresponding path program 1 times [2023-11-06 22:26:25,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:25,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518893320] [2023-11-06 22:26:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:25,142 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361598123] [2023-11-06 22:26:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:25,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:25,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:25,145 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:25,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:26:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:25,203 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:26:25,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:25,361 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:26:25,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:25,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518893320] [2023-11-06 22:26:25,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:25,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361598123] [2023-11-06 22:26:25,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361598123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:25,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-06 22:26:25,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705787092] [2023-11-06 22:26:25,428 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:26:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:26:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:25,430 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:26:25,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:25,584 INFO L93 Difference]: Finished difference Result 71 states and 103 transitions. [2023-11-06 22:26:25,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:25,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-11-06 22:26:25,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:25,595 INFO L225 Difference]: With dead ends: 71 [2023-11-06 22:26:25,596 INFO L226 Difference]: Without dead ends: 67 [2023-11-06 22:26:25,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:26:25,597 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:25,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:25,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-06 22:26:25,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-06 22:26:25,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 39 states have internal predecessors, (47), 26 states have call successors, (26), 5 states have call predecessors, (26), 5 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-06 22:26:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 96 transitions. [2023-11-06 22:26:25,646 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 96 transitions. Word has length 29 [2023-11-06 22:26:25,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:25,646 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 96 transitions. [2023-11-06 22:26:25,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 22:26:25,647 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 96 transitions. [2023-11-06 22:26:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:26:25,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:25,649 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:25,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:25,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:25,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:25,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:25,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1071030291, now seen corresponding path program 1 times [2023-11-06 22:26:25,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:25,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626269093] [2023-11-06 22:26:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:25,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:25,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863522466] [2023-11-06 22:26:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:25,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:25,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:25,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:26:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:25,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:26:25,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:25,982 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:25,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:26:25,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626269093] [2023-11-06 22:26:25,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863522466] [2023-11-06 22:26:25,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863522466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:26:25,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:26:25,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:26:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562167780] [2023-11-06 22:26:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:26:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:26:25,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:25,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:26:25,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:26:25,986 INFO L87 Difference]: Start difference. First operand 67 states and 96 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:26:26,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:26,053 INFO L93 Difference]: Finished difference Result 83 states and 119 transitions. [2023-11-06 22:26:26,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:26:26,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 35 [2023-11-06 22:26:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:26,058 INFO L225 Difference]: With dead ends: 83 [2023-11-06 22:26:26,058 INFO L226 Difference]: Without dead ends: 81 [2023-11-06 22:26:26,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:26:26,060 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:26,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:26:26,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-06 22:26:26,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2023-11-06 22:26:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 45 states have internal predecessors, (50), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-06 22:26:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2023-11-06 22:26:26,103 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 35 [2023-11-06 22:26:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:26,106 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2023-11-06 22:26:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-06 22:26:26,106 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2023-11-06 22:26:26,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 22:26:26,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:26,111 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:26,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:26,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 22:26:26,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:26,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1689492770, now seen corresponding path program 1 times [2023-11-06 22:26:26,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:26,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523018097] [2023-11-06 22:26:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:26,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:26,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:26,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190471417] [2023-11-06 22:26:26,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:26,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:26,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:26,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:26,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:26:26,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:26,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:26:26,405 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:26,507 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:26,507 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:26,595 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:26,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523018097] [2023-11-06 22:26:26,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:26,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190471417] [2023-11-06 22:26:26,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190471417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:26,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:26,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-11-06 22:26:26,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503831693] [2023-11-06 22:26:26,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:26,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:26:26,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:26:26,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:26:26,599 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:26,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:26,788 INFO L93 Difference]: Finished difference Result 218 states and 286 transitions. [2023-11-06 22:26:26,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:26:26,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 38 [2023-11-06 22:26:26,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:26,792 INFO L225 Difference]: With dead ends: 218 [2023-11-06 22:26:26,792 INFO L226 Difference]: Without dead ends: 196 [2023-11-06 22:26:26,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:26:26,794 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:26,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 122 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-06 22:26:26,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 190. [2023-11-06 22:26:26,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 108 states have (on average 1.2222222222222223) internal successors, (132), 119 states have internal predecessors, (132), 61 states have call successors, (61), 21 states have call predecessors, (61), 20 states have return successors, (54), 49 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-06 22:26:26,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 247 transitions. [2023-11-06 22:26:26,866 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 247 transitions. Word has length 38 [2023-11-06 22:26:26,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:26,867 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 247 transitions. [2023-11-06 22:26:26,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-11-06 22:26:26,880 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 247 transitions. [2023-11-06 22:26:26,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 22:26:26,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:26,881 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, 1, 1] [2023-11-06 22:26:26,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:27,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-06 22:26:27,082 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:27,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:27,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1691161066, now seen corresponding path program 1 times [2023-11-06 22:26:27,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:27,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104482338] [2023-11-06 22:26:27,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:27,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:27,096 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:27,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462271584] [2023-11-06 22:26:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:27,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:27,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:27,098 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:27,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:26:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:27,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:26:27,189 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-06 22:26:27,343 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:27,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:27,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104482338] [2023-11-06 22:26:27,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:27,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462271584] [2023-11-06 22:26:27,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462271584] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:26:27,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:26:27,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-11-06 22:26:27,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097988171] [2023-11-06 22:26:27,505 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:27,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:26:27,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:27,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:26:27,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:26:27,507 INFO L87 Difference]: Start difference. First operand 190 states and 247 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:27,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:27,669 INFO L93 Difference]: Finished difference Result 204 states and 260 transitions. [2023-11-06 22:26:27,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:26:27,670 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-11-06 22:26:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:27,673 INFO L225 Difference]: With dead ends: 204 [2023-11-06 22:26:27,673 INFO L226 Difference]: Without dead ends: 199 [2023-11-06 22:26:27,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:26:27,675 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:27,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 118 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:27,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-06 22:26:27,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-06 22:26:27,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 117 states have (on average 1.205128205128205) internal successors, (141), 128 states have internal predecessors, (141), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (51), 46 states have call predecessors, (51), 51 states have call successors, (51) [2023-11-06 22:26:27,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 250 transitions. [2023-11-06 22:26:27,718 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 250 transitions. Word has length 38 [2023-11-06 22:26:27,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:27,719 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 250 transitions. [2023-11-06 22:26:27,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-06 22:26:27,720 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 250 transitions. [2023-11-06 22:26:27,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-06 22:26:27,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:27,721 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:27,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:27,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:27,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:27,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:27,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1925895455, now seen corresponding path program 1 times [2023-11-06 22:26:27,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:27,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227004060] [2023-11-06 22:26:27,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:27,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:27,942 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:27,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794395636] [2023-11-06 22:26:27,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:27,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:27,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:27,945 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:27,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:26:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:28,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:26:28,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:28,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:28,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:28,289 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:28,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:28,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227004060] [2023-11-06 22:26:28,290 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:28,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794395636] [2023-11-06 22:26:28,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794395636] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:28,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:28,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2023-11-06 22:26:28,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676298359] [2023-11-06 22:26:28,292 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:28,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:26:28,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:28,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:26:28,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:26:28,294 INFO L87 Difference]: Start difference. First operand 199 states and 250 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:26:28,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:28,508 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2023-11-06 22:26:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:26:28,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2023-11-06 22:26:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:28,511 INFO L225 Difference]: With dead ends: 228 [2023-11-06 22:26:28,511 INFO L226 Difference]: Without dead ends: 212 [2023-11-06 22:26:28,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:26:28,513 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 18 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:28,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 145 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:26:28,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-06 22:26:28,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2023-11-06 22:26:28,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 127 states have (on average 1.1653543307086613) internal successors, (148), 138 states have internal predecessors, (148), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (53), 46 states have call predecessors, (53), 53 states have call successors, (53) [2023-11-06 22:26:28,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 258 transitions. [2023-11-06 22:26:28,573 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 258 transitions. Word has length 40 [2023-11-06 22:26:28,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:28,573 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 258 transitions. [2023-11-06 22:26:28,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-06 22:26:28,574 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 258 transitions. [2023-11-06 22:26:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:26:28,578 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:28,579 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:28,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:28,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:28,785 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:28,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:28,786 INFO L85 PathProgramCache]: Analyzing trace with hash 968731240, now seen corresponding path program 2 times [2023-11-06 22:26:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:28,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568640656] [2023-11-06 22:26:28,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:28,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:28,797 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1651086335] [2023-11-06 22:26:28,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:28,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:28,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:28,800 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:28,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:26:28,872 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:28,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:28,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-06 22:26:28,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:29,232 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 22:26:29,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:29,499 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-06 22:26:29,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568640656] [2023-11-06 22:26:29,500 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:29,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651086335] [2023-11-06 22:26:29,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651086335] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:29,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:29,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-11-06 22:26:29,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104169764] [2023-11-06 22:26:29,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:29,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:26:29,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:29,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:26:29,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:26:29,504 INFO L87 Difference]: Start difference. First operand 210 states and 258 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-06 22:26:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:30,432 INFO L93 Difference]: Finished difference Result 249 states and 310 transitions. [2023-11-06 22:26:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:26:30,432 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) Word has length 43 [2023-11-06 22:26:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:30,435 INFO L225 Difference]: With dead ends: 249 [2023-11-06 22:26:30,435 INFO L226 Difference]: Without dead ends: 225 [2023-11-06 22:26:30,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:26:30,437 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 43 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:30,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 227 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:26:30,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-11-06 22:26:30,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 206. [2023-11-06 22:26:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 133 states have (on average 1.1278195488721805) internal successors, (150), 141 states have internal predecessors, (150), 45 states have call successors, (45), 27 states have call predecessors, (45), 27 states have return successors, (41), 37 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-06 22:26:30,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 236 transitions. [2023-11-06 22:26:30,504 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 236 transitions. Word has length 43 [2023-11-06 22:26:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:30,505 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 236 transitions. [2023-11-06 22:26:30,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 14 states have internal predecessors, (35), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-06 22:26:30,505 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 236 transitions. [2023-11-06 22:26:30,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:26:30,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:30,507 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:30,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:30,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:26:30,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:30,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:30,714 INFO L85 PathProgramCache]: Analyzing trace with hash -715006568, now seen corresponding path program 1 times [2023-11-06 22:26:30,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:30,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775949732] [2023-11-06 22:26:30,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:30,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:30,727 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:30,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1711366973] [2023-11-06 22:26:30,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:30,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:30,729 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:30,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:26:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:26:30,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-06 22:26:30,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:31,228 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-06 22:26:31,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:31,651 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 22:26:31,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:31,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775949732] [2023-11-06 22:26:31,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711366973] [2023-11-06 22:26:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711366973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:31,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:31,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-11-06 22:26:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164530838] [2023-11-06 22:26:31,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:31,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:26:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:31,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:26:31,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:26:31,657 INFO L87 Difference]: Start difference. First operand 206 states and 236 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-06 22:26:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:32,261 INFO L93 Difference]: Finished difference Result 218 states and 252 transitions. [2023-11-06 22:26:32,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:26:32,262 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 57 [2023-11-06 22:26:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:32,264 INFO L225 Difference]: With dead ends: 218 [2023-11-06 22:26:32,265 INFO L226 Difference]: Without dead ends: 191 [2023-11-06 22:26:32,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:32,267 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 42 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:32,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 287 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:26:32,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-06 22:26:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 185. [2023-11-06 22:26:32,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 124 states have (on average 1.1129032258064515) internal successors, (138), 128 states have internal predecessors, (138), 36 states have call successors, (36), 24 states have call predecessors, (36), 24 states have return successors, (34), 32 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-06 22:26:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 208 transitions. [2023-11-06 22:26:32,341 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 208 transitions. Word has length 57 [2023-11-06 22:26:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:32,342 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 208 transitions. [2023-11-06 22:26:32,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 8 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-06 22:26:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 208 transitions. [2023-11-06 22:26:32,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 22:26:32,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:32,346 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:32,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:32,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:32,553 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:32,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:32,554 INFO L85 PathProgramCache]: Analyzing trace with hash 985491918, now seen corresponding path program 2 times [2023-11-06 22:26:32,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:32,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233980335] [2023-11-06 22:26:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:32,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:32,577 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:32,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232133203] [2023-11-06 22:26:32,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:26:32,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:32,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:32,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:32,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:26:32,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:26:32,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:32,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:26:32,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:32,856 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 266 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-06 22:26:32,857 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2023-11-06 22:26:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233980335] [2023-11-06 22:26:33,059 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232133203] [2023-11-06 22:26:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232133203] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:33,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:33,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-06 22:26:33,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706412606] [2023-11-06 22:26:33,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:33,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:26:33,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:33,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:26:33,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:26:33,076 INFO L87 Difference]: Start difference. First operand 185 states and 208 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-06 22:26:33,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:33,532 INFO L93 Difference]: Finished difference Result 512 states and 601 transitions. [2023-11-06 22:26:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:26:33,533 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) Word has length 95 [2023-11-06 22:26:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:33,538 INFO L225 Difference]: With dead ends: 512 [2023-11-06 22:26:33,538 INFO L226 Difference]: Without dead ends: 503 [2023-11-06 22:26:33,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:26:33,540 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 85 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:33,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 158 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:26:33,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2023-11-06 22:26:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 503. [2023-11-06 22:26:33,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 334 states have (on average 1.095808383233533) internal successors, (366), 344 states have internal predecessors, (366), 102 states have call successors, (102), 66 states have call predecessors, (102), 66 states have return successors, (100), 92 states have call predecessors, (100), 100 states have call successors, (100) [2023-11-06 22:26:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 568 transitions. [2023-11-06 22:26:33,695 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 568 transitions. Word has length 95 [2023-11-06 22:26:33,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:33,696 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 568 transitions. [2023-11-06 22:26:33,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (28), 10 states have call predecessors, (28), 10 states have call successors, (28) [2023-11-06 22:26:33,697 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 568 transitions. [2023-11-06 22:26:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-06 22:26:33,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:33,706 INFO L195 NwaCegarLoop]: trace histogram [31, 30, 30, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:33,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:33,913 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:33,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash 325062734, now seen corresponding path program 3 times [2023-11-06 22:26:33,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:33,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034833252] [2023-11-06 22:26:33,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:33,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:33,937 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:33,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [727435280] [2023-11-06 22:26:33,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:26:33,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:33,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:33,939 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:33,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:26:34,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2023-11-06 22:26:34,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:26:34,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-06 22:26:34,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:26:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 60 proven. 1955 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-11-06 22:26:34,661 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:26:35,177 INFO L134 CoverageAnalysis]: Checked inductivity of 2139 backedges. 60 proven. 335 refuted. 0 times theorem prover too weak. 1744 trivial. 0 not checked. [2023-11-06 22:26:35,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:26:35,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034833252] [2023-11-06 22:26:35,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-06 22:26:35,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727435280] [2023-11-06 22:26:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727435280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:26:35,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:26:35,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-11-06 22:26:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558224555] [2023-11-06 22:26:35,179 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:26:35,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:26:35,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:26:35,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:26:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:26:35,183 INFO L87 Difference]: Start difference. First operand 503 states and 568 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (65), 13 states have call predecessors, (65), 12 states have return successors, (64), 20 states have call predecessors, (64), 20 states have call successors, (64) [2023-11-06 22:26:36,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:26:36,106 INFO L93 Difference]: Finished difference Result 1042 states and 1217 transitions. [2023-11-06 22:26:36,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-06 22:26:36,107 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (65), 13 states have call predecessors, (65), 12 states have return successors, (64), 20 states have call predecessors, (64), 20 states have call successors, (64) Word has length 209 [2023-11-06 22:26:36,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:26:36,118 INFO L225 Difference]: With dead ends: 1042 [2023-11-06 22:26:36,118 INFO L226 Difference]: Without dead ends: 1033 [2023-11-06 22:26:36,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 392 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2023-11-06 22:26:36,121 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 155 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:26:36,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 218 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:26:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2023-11-06 22:26:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1033. [2023-11-06 22:26:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1033 states, 684 states have (on average 1.090643274853801) internal successors, (746), 704 states have internal predecessors, (746), 212 states have call successors, (212), 136 states have call predecessors, (212), 136 states have return successors, (210), 192 states have call predecessors, (210), 210 states have call successors, (210) [2023-11-06 22:26:36,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1033 states to 1033 states and 1168 transitions. [2023-11-06 22:26:36,374 INFO L78 Accepts]: Start accepts. Automaton has 1033 states and 1168 transitions. Word has length 209 [2023-11-06 22:26:36,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:26:36,375 INFO L495 AbstractCegarLoop]: Abstraction has 1033 states and 1168 transitions. [2023-11-06 22:26:36,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (65), 13 states have call predecessors, (65), 12 states have return successors, (64), 20 states have call predecessors, (64), 20 states have call successors, (64) [2023-11-06 22:26:36,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1033 states and 1168 transitions. [2023-11-06 22:26:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2023-11-06 22:26:36,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:26:36,390 INFO L195 NwaCegarLoop]: trace histogram [61, 60, 60, 21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:36,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:36,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:36,596 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:26:36,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:26:36,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1625381426, now seen corresponding path program 4 times [2023-11-06 22:26:36,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:26:36,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499319595] [2023-11-06 22:26:36,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:26:36,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:26:36,639 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-06 22:26:36,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556671763] [2023-11-06 22:26:36,640 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:26:36,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:36,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:26:36,642 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:26:36,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:26:36,908 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:26:36,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-11-06 22:26:36,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:26:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:26:37,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:26:37,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:26:37,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-06 22:26:37,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:26:37,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:26:37,434 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:26:37,439 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:26:37,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:26:37 BoogieIcfgContainer [2023-11-06 22:26:37,599 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:26:37,600 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:26:37,600 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:26:37,601 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:26:37,601 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:26:22" (3/4) ... [2023-11-06 22:26:37,602 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-06 22:26:37,806 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:26:37,806 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:26:37,807 INFO L158 Benchmark]: Toolchain (without parser) took 16363.04ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 114.9MB in the beginning and 59.0MB in the end (delta: 56.0MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,808 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:37,808 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.72ms. Allocated memory is still 153.1MB. Free memory was 114.9MB in the beginning and 104.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.54ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 102.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,809 INFO L158 Benchmark]: Boogie Preprocessor took 27.47ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 101.4MB in the end (delta: 988.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:26:37,809 INFO L158 Benchmark]: RCFGBuilder took 387.82ms. Allocated memory is still 153.1MB. Free memory was 101.4MB in the beginning and 89.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,810 INFO L158 Benchmark]: TraceAbstraction took 15269.47ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 89.1MB in the beginning and 70.5MB in the end (delta: 18.6MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,811 INFO L158 Benchmark]: Witness Printer took 206.48ms. Allocated memory is still 184.5MB. Free memory was 70.5MB in the beginning and 59.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:26:37,815 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 123.7MB. Free memory is still 69.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.72ms. Allocated memory is still 153.1MB. Free memory was 114.9MB in the beginning and 104.0MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.54ms. Allocated memory is still 153.1MB. Free memory was 104.0MB in the beginning and 102.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.47ms. Allocated memory is still 153.1MB. Free memory was 102.4MB in the beginning and 101.4MB in the end (delta: 988.4kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 387.82ms. Allocated memory is still 153.1MB. Free memory was 101.4MB in the beginning and 89.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 15269.47ms. Allocated memory was 153.1MB in the beginning and 184.5MB in the end (delta: 31.5MB). Free memory was 89.1MB in the beginning and 70.5MB in the end (delta: 18.6MB). Peak memory consumption was 52.1MB. Max. memory is 16.1GB. * Witness Printer took 206.48ms. Allocated memory is still 184.5MB. Free memory was 70.5MB in the beginning and 59.0MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. 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 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(x >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L24] RET assume_abort_if_not(x >= 1) VAL [counter=0, x=43, y=2] [L25] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, counter=0] [L8] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L25] RET assume_abort_if_not(y >= 1) VAL [counter=0, x=43, y=2] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [a=43, b=2, counter=0, p=1, q=0, r=0, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=43, b=2, counter++=0, counter=1, p=1, q=0, r=0, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=43, b=2, counter=1, p=1, q=0, r=0, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=43, b=2, counter=1, p=1, q=0, r=0, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=1] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=43, b=2, counter=1, p=1, q=0, r=0, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=43, b=2, counter=1, p=1, q=0, r=0, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=41, b=2, counter=1, p=1, q=0, r=-1, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=41, b=2, counter++=1, counter=2, p=1, q=0, r=-1, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=41, b=2, counter=2, p=1, q=0, r=-1, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=41, b=2, counter=2, p=1, q=0, r=-1, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=2] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=41, b=2, counter=2, p=1, q=0, r=-1, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=41, b=2, counter=2, p=1, q=0, r=-1, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=39, b=2, counter=2, p=1, q=0, r=-2, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=39, b=2, counter++=2, counter=3, p=1, q=0, r=-2, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=39, b=2, counter=3, p=1, q=0, r=-2, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=39, b=2, counter=3, p=1, q=0, r=-2, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=3] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=39, b=2, counter=3, p=1, q=0, r=-2, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=39, b=2, counter=3, p=1, q=0, r=-2, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=37, b=2, counter=3, p=1, q=0, r=-3, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=37, b=2, counter++=3, counter=4, p=1, q=0, r=-3, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=37, b=2, counter=4, p=1, q=0, r=-3, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=37, b=2, counter=4, p=1, q=0, r=-3, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=4] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=37, b=2, counter=4, p=1, q=0, r=-3, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=37, b=2, counter=4, p=1, q=0, r=-3, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=35, b=2, counter=4, p=1, q=0, r=-4, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=35, b=2, counter++=4, counter=5, p=1, q=0, r=-4, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=35, b=2, counter=5, p=1, q=0, r=-4, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=35, b=2, counter=5, p=1, q=0, r=-4, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=5] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=35, b=2, counter=5, p=1, q=0, r=-4, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=35, b=2, counter=5, p=1, q=0, r=-4, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=33, b=2, counter=5, p=1, q=0, r=-5, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=33, b=2, counter++=5, counter=6, p=1, q=0, r=-5, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=33, b=2, counter=6, p=1, q=0, r=-5, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=33, b=2, counter=6, p=1, q=0, r=-5, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=6] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=33, b=2, counter=6, p=1, q=0, r=-5, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=33, b=2, counter=6, p=1, q=0, r=-5, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=31, b=2, counter=6, p=1, q=0, r=-6, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=31, b=2, counter++=6, counter=7, p=1, q=0, r=-6, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=31, b=2, counter=7, p=1, q=0, r=-6, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=31, b=2, counter=7, p=1, q=0, r=-6, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=7] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=31, b=2, counter=7, p=1, q=0, r=-6, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=31, b=2, counter=7, p=1, q=0, r=-6, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=29, b=2, counter=7, p=1, q=0, r=-7, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=29, b=2, counter++=7, counter=8, p=1, q=0, r=-7, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=29, b=2, counter=8, p=1, q=0, r=-7, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=29, b=2, counter=8, p=1, q=0, r=-7, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=8] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=29, b=2, counter=8, p=1, q=0, r=-7, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=29, b=2, counter=8, p=1, q=0, r=-7, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=27, b=2, counter=8, p=1, q=0, r=-8, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=27, b=2, counter++=8, counter=9, p=1, q=0, r=-8, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=27, b=2, counter=9, p=1, q=0, r=-8, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=27, b=2, counter=9, p=1, q=0, r=-8, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=9] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=27, b=2, counter=9, p=1, q=0, r=-8, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=27, b=2, counter=9, p=1, q=0, r=-8, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=25, b=2, counter=9, p=1, q=0, r=-9, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=25, b=2, counter++=9, counter=10, p=1, q=0, r=-9, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=25, b=2, counter=10, p=1, q=0, r=-9, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=25, b=2, counter=10, p=1, q=0, r=-9, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=10] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=25, b=2, counter=10, p=1, q=0, r=-9, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=25, b=2, counter=10, p=1, q=0, r=-9, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=23, b=2, counter=10, p=1, q=0, r=-10, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=23, b=2, counter++=10, counter=11, p=1, q=0, r=-10, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=23, b=2, counter=11, p=1, q=0, r=-10, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=23, b=2, counter=11, p=1, q=0, r=-10, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=11] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=23, b=2, counter=11, p=1, q=0, r=-10, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=23, b=2, counter=11, p=1, q=0, r=-10, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=21, b=2, counter=11, p=1, q=0, r=-11, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=21, b=2, counter++=11, counter=12, p=1, q=0, r=-11, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=12] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=21, b=2, counter=12, p=1, q=0, r=-11, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=12] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=21, b=2, counter=12, p=1, q=0, r=-11, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=12] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=21, b=2, counter=12, p=1, q=0, r=-11, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=21, b=2, counter=12, p=1, q=0, r=-11, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=19, b=2, counter=12, p=1, q=0, r=-12, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=19, b=2, counter++=12, counter=13, p=1, q=0, r=-12, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=19, b=2, counter=13, p=1, q=0, r=-12, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=19, b=2, counter=13, p=1, q=0, r=-12, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=13] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=19, b=2, counter=13, p=1, q=0, r=-12, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=19, b=2, counter=13, p=1, q=0, r=-12, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=17, b=2, counter=13, p=1, q=0, r=-13, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=17, b=2, counter++=13, counter=14, p=1, q=0, r=-13, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=17, b=2, counter=14, p=1, q=0, r=-13, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=17, b=2, counter=14, p=1, q=0, r=-13, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=14] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=17, b=2, counter=14, p=1, q=0, r=-13, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=17, b=2, counter=14, p=1, q=0, r=-13, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=15, b=2, counter=14, p=1, q=0, r=-14, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=15, b=2, counter++=14, counter=15, p=1, q=0, r=-14, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=15] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=15, b=2, counter=15, p=1, q=0, r=-14, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=15] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=15, b=2, counter=15, p=1, q=0, r=-14, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=15] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=15, b=2, counter=15, p=1, q=0, r=-14, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=15, b=2, counter=15, p=1, q=0, r=-14, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=13, b=2, counter=15, p=1, q=0, r=-15, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=13, b=2, counter++=15, counter=16, p=1, q=0, r=-15, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=13, b=2, counter=16, p=1, q=0, r=-15, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=13, b=2, counter=16, p=1, q=0, r=-15, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=16] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=13, b=2, counter=16, p=1, q=0, r=-15, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=13, b=2, counter=16, p=1, q=0, r=-15, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=11, b=2, counter=16, p=1, q=0, r=-16, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=11, b=2, counter++=16, counter=17, p=1, q=0, r=-16, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=11, b=2, counter=17, p=1, q=0, r=-16, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=11, b=2, counter=17, p=1, q=0, r=-16, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=17] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=11, b=2, counter=17, p=1, q=0, r=-16, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=11, b=2, counter=17, p=1, q=0, r=-16, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=9, b=2, counter=17, p=1, q=0, r=-17, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=9, b=2, counter++=17, counter=18, p=1, q=0, r=-17, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=18] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=9, b=2, counter=18, p=1, q=0, r=-17, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=18] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=9, b=2, counter=18, p=1, q=0, r=-17, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=18] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=9, b=2, counter=18, p=1, q=0, r=-17, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=9, b=2, counter=18, p=1, q=0, r=-17, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=7, b=2, counter=18, p=1, q=0, r=-18, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=7, b=2, counter++=18, counter=19, p=1, q=0, r=-18, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=7, b=2, counter=19, p=1, q=0, r=-18, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=7, b=2, counter=19, p=1, q=0, r=-18, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=19] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=7, b=2, counter=19, p=1, q=0, r=-18, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=7, b=2, counter=19, p=1, q=0, r=-18, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=5, b=2, counter=19, p=1, q=0, r=-19, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=5, b=2, counter++=19, counter=20, p=1, q=0, r=-19, s=1, x=43, y=2] [L34] COND TRUE counter++<20 [L35] CALL __VERIFIER_assert(1 == p * s - r * q) VAL [\old(cond)=1, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L35] RET __VERIFIER_assert(1 == p * s - r * q) VAL [a=5, b=2, counter=20, p=1, q=0, r=-19, s=1, x=43, y=2] [L36] CALL __VERIFIER_assert(a == y * r + x * p) VAL [\old(cond)=1, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L36] RET __VERIFIER_assert(a == y * r + x * p) VAL [a=5, b=2, counter=20, p=1, q=0, r=-19, s=1, x=43, y=2] [L37] CALL __VERIFIER_assert(b == x * q + y * s) VAL [\old(cond)=1, counter=20] [L11] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L37] RET __VERIFIER_assert(b == x * q + y * s) VAL [a=5, b=2, counter=20, p=1, q=0, r=-19, s=1, x=43, y=2] [L39] COND FALSE !(!(a != b)) VAL [a=5, b=2, counter=20, p=1, q=0, r=-19, s=1, x=43, y=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [a=3, b=2, counter=20, p=1, q=0, r=-20, s=1, x=43, y=2] [L34] EXPR counter++ VAL [a=3, b=2, counter++=20, counter=21, p=1, q=0, r=-20, s=1, x=43, y=2] [L34] COND FALSE !(counter++<20) [L53] CALL __VERIFIER_assert(a - b == 0) VAL [\old(cond)=0, counter=21] [L11] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L13] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.0s, OverallIterations: 14, TraceHistogramMax: 61, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 505 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 473 mSDsluCounter, 1921 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1524 mSDsCounter, 184 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1216 IncrementalHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 184 mSolverCounterUnsat, 397 mSDtfsCounter, 1216 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1181 GetRequests, 1008 SyntacticMatches, 3 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1033occurred in iteration=13, InterpolantAutomatonStates: 151, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 42 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1063 NumberOfCodeBlocks, 1048 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1127 ConstructedInterpolants, 0 QuantifiedInterpolants, 3396 SizeOfPredicates, 46 NumberOfNonLiveVariables, 1617 ConjunctsInSsa, 207 ConjunctsInUnsatCore, 19 InterpolantComputations, 4 PerfectInterpolantSequences, 2756/5417 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-06 22:26:37,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81eeb36f-0696-4086-bed0-a5a165017b20/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE