./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:20:53,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:20:53,549 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:20:53,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:20:53,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:20:53,584 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:20:53,585 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:20:53,585 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:20:53,585 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:20:53,586 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:20:53,586 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:20:53,586 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:20:53,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:20:53,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:20:53,587 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:20:53,587 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:20:53,587 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:20:53,587 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:20:53,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:20:53,588 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:20:53,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:20:53,593 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:53,593 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:20:53,593 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:53,594 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:20:53,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:20:53,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:20:53,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:20:53,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:20:53,595 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 [2024-11-28 04:20:53,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:20:53,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:20:53,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:20:53,959 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:20:53,959 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:20:53,961 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-11-28 04:20:57,001 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/data/b099f21ca/65011a12cb554af6a267ed685d3ac22c/FLAG34c30b8cd [2024-11-28 04:20:57,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:20:57,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2024-11-28 04:20:57,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/data/b099f21ca/65011a12cb554af6a267ed685d3ac22c/FLAG34c30b8cd [2024-11-28 04:20:57,403 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/data/b099f21ca/65011a12cb554af6a267ed685d3ac22c [2024-11-28 04:20:57,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:20:57,407 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:20:57,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:20:57,410 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:20:57,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:20:57,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200f4299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57, skipping insertion in model container [2024-11-28 04:20:57,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:20:57,629 WARN L250 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_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2024-11-28 04:20:57,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:20:57,676 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:20:57,691 WARN L250 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_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c[538,551] [2024-11-28 04:20:57,708 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:20:57,731 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:20:57,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57 WrapperNode [2024-11-28 04:20:57,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:20:57,735 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:20:57,735 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:20:57,735 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:20:57,750 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,760 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,780 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-28 04:20:57,781 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:20:57,782 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:20:57,782 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:20:57,782 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:20:57,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,797 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,798 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,818 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:20:57,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,825 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,833 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,837 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,842 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:20:57,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:20:57,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:20:57,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:20:57,847 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (1/1) ... [2024-11-28 04:20:57,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:20:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:57,902 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:20:57,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:20:57,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:20:57,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:20:57,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:20:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:20:57,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:20:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:20:57,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:20:57,944 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:20:58,016 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:20:58,019 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:20:58,264 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 04:20:58,265 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:20:58,275 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:20:58,275 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 04:20:58,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:20:58 BoogieIcfgContainer [2024-11-28 04:20:58,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:20:58,279 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:20:58,279 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:20:58,285 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:20:58,285 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:20:57" (1/3) ... [2024-11-28 04:20:58,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a9dd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:20:58, skipping insertion in model container [2024-11-28 04:20:58,286 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:20:57" (2/3) ... [2024-11-28 04:20:58,286 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a9dd8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:20:58, skipping insertion in model container [2024-11-28 04:20:58,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:20:58" (3/3) ... [2024-11-28 04:20:58,288 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2024-11-28 04:20:58,304 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:20:58,306 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-ll_valuebound1.c that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:20:58,363 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:20:58,376 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@47c245b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:20:58,377 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:20:58,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:20:58,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:20:58,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:58,392 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:58,392 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:58,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1636017688, now seen corresponding path program 1 times [2024-11-28 04:20:58,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:58,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178356845] [2024-11-28 04:20:58,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:20:58,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:58,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178356845] [2024-11-28 04:20:58,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178356845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:20:58,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635079996] [2024-11-28 04:20:58,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:58,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:58,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:58,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:58,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:20:58,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:58,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:20:58,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:20:58,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 04:20:58,767 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:20:58,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635079996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:58,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:20:58,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:20:58,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427447695] [2024-11-28 04:20:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:58,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:20:58,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:58,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:20:58,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:20:58,805 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 18 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:20:58,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:58,835 INFO L93 Difference]: Finished difference Result 59 states and 100 transitions. [2024-11-28 04:20:58,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:20:58,838 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-28 04:20:58,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:58,850 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:20:58,850 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:20:58,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:20:58,858 INFO L435 NwaCegarLoop]: 41 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, 41 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 [2024-11-28 04:20:58,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:20:58,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:20:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-28 04:20:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:20:58,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-11-28 04:20:58,912 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 23 [2024-11-28 04:20:58,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:58,915 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-11-28 04:20:58,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:20:58,915 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-11-28 04:20:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:20:58,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:58,918 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:58,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:20:59,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:59,122 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:59,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:59,123 INFO L85 PathProgramCache]: Analyzing trace with hash -426146774, now seen corresponding path program 1 times [2024-11-28 04:20:59,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:59,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246082988] [2024-11-28 04:20:59,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:59,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:59,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:20:59,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:59,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246082988] [2024-11-28 04:20:59,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246082988] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:59,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:59,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:20:59,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318799294] [2024-11-28 04:20:59,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:59,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:20:59,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:59,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:20:59,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:59,499 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:20:59,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:59,600 INFO L93 Difference]: Finished difference Result 39 states and 53 transitions. [2024-11-28 04:20:59,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:20:59,603 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-11-28 04:20:59,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:59,604 INFO L225 Difference]: With dead ends: 39 [2024-11-28 04:20:59,604 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 04:20:59,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:20:59,606 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:59,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 119 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:20:59,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 04:20:59,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2024-11-28 04:20:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:20:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2024-11-28 04:20:59,624 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 23 [2024-11-28 04:20:59,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:59,624 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2024-11-28 04:20:59,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:20:59,624 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2024-11-28 04:20:59,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:20:59,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:59,625 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:59,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:20:59,626 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:59,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:59,626 INFO L85 PathProgramCache]: Analyzing trace with hash -300538825, now seen corresponding path program 1 times [2024-11-28 04:20:59,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:59,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891635245] [2024-11-28 04:20:59,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:59,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:20:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:20:59,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:20:59,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891635245] [2024-11-28 04:20:59,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891635245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:20:59,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:20:59,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:20:59,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537689391] [2024-11-28 04:20:59,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:20:59,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:20:59,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:20:59,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:20:59,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:20:59,802 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:20:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:20:59,897 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2024-11-28 04:20:59,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:20:59,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-28 04:20:59,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:20:59,899 INFO L225 Difference]: With dead ends: 43 [2024-11-28 04:20:59,899 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:20:59,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:20:59,900 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:20:59,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 116 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:20:59,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:20:59,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2024-11-28 04:20:59,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:20:59,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-11-28 04:20:59,918 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 28 [2024-11-28 04:20:59,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:20:59,918 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-11-28 04:20:59,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:20:59,919 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-11-28 04:20:59,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:20:59,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:20:59,920 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:20:59,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:20:59,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:20:59,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:20:59,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1372167178, now seen corresponding path program 1 times [2024-11-28 04:20:59,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:20:59,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38339850] [2024-11-28 04:20:59,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:59,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:20:59,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:20:59,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [55245562] [2024-11-28 04:20:59,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:20:59,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:20:59,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:20:59,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:20:59,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:21:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:00,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:21:00,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 04:21:00,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:21:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38339850] [2024-11-28 04:21:00,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:21:00,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55245562] [2024-11-28 04:21:00,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55245562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:00,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:00,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:21:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90599550] [2024-11-28 04:21:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:00,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:00,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:00,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:00,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:00,184 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:21:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:00,325 INFO L93 Difference]: Finished difference Result 58 states and 77 transitions. [2024-11-28 04:21:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:21:00,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2024-11-28 04:21:00,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:00,329 INFO L225 Difference]: With dead ends: 58 [2024-11-28 04:21:00,329 INFO L226 Difference]: Without dead ends: 46 [2024-11-28 04:21:00,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:00,330 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:00,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 116 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-28 04:21:00,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-11-28 04:21:00,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:21:00,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2024-11-28 04:21:00,348 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 33 [2024-11-28 04:21:00,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:00,348 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2024-11-28 04:21:00,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:21:00,348 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2024-11-28 04:21:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 04:21:00,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:00,349 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:00,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:00,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:00,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:00,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:00,555 INFO L85 PathProgramCache]: Analyzing trace with hash 404303124, now seen corresponding path program 1 times [2024-11-28 04:21:00,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:00,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649176266] [2024-11-28 04:21:00,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:00,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:21:00,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089375793] [2024-11-28 04:21:00,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:00,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:00,586 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:00,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:21:00,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:00,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:21:00,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:21:00,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:21:01,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649176266] [2024-11-28 04:21:01,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:21:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089375793] [2024-11-28 04:21:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089375793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:01,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:21:01,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2024-11-28 04:21:01,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716603577] [2024-11-28 04:21:01,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:01,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:21:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:01,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:21:01,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:21:01,149 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:21:01,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:01,358 INFO L93 Difference]: Finished difference Result 59 states and 77 transitions. [2024-11-28 04:21:01,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:21:01,359 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 39 [2024-11-28 04:21:01,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:01,361 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:21:01,362 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:21:01,362 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:21:01,366 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:01,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 136 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:21:01,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:21:01,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2024-11-28 04:21:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 32 states have internal predecessors, (37), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:21:01,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 72 transitions. [2024-11-28 04:21:01,395 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 72 transitions. Word has length 39 [2024-11-28 04:21:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:01,395 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 72 transitions. [2024-11-28 04:21:01,395 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 9 states have internal predecessors, (22), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:21:01,395 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 72 transitions. [2024-11-28 04:21:01,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 04:21:01,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:01,400 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:01,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:01,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:01,604 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:01,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:01,605 INFO L85 PathProgramCache]: Analyzing trace with hash -2023308484, now seen corresponding path program 1 times [2024-11-28 04:21:01,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:01,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388803627] [2024-11-28 04:21:01,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:01,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:21:01,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672551364] [2024-11-28 04:21:01,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:01,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:01,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:01,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:01,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:21:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:01,714 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:21:01,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2024-11-28 04:21:01,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 04:21:02,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388803627] [2024-11-28 04:21:02,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:21:02,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672551364] [2024-11-28 04:21:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672551364] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:02,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:21:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2024-11-28 04:21:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723853095] [2024-11-28 04:21:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:02,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:02,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:02,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:02,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:21:02,200 INFO L87 Difference]: Start difference. First operand 55 states and 72 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:21:02,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:02,320 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2024-11-28 04:21:02,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:21:02,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2024-11-28 04:21:02,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:02,322 INFO L225 Difference]: With dead ends: 64 [2024-11-28 04:21:02,322 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 04:21:02,322 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:21:02,323 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:02,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:02,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 04:21:02,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2024-11-28 04:21:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:21:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2024-11-28 04:21:02,340 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 49 [2024-11-28 04:21:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:02,341 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2024-11-28 04:21:02,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:21:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2024-11-28 04:21:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:21:02,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:02,342 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:02,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:02,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:02,543 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:02,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1831809599, now seen corresponding path program 1 times [2024-11-28 04:21:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:02,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200587843] [2024-11-28 04:21:02,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:02,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-28 04:21:02,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:02,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200587843] [2024-11-28 04:21:02,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200587843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:02,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:21:02,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:21:02,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491492473] [2024-11-28 04:21:02,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:02,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:02,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:02,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:02,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:02,841 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:21:02,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:02,934 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2024-11-28 04:21:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:21:02,935 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 55 [2024-11-28 04:21:02,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:02,936 INFO L225 Difference]: With dead ends: 69 [2024-11-28 04:21:02,936 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 04:21:02,937 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:02,940 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 3 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:02,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 126 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 04:21:02,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-28 04:21:02,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.1875) internal successors, (38), 35 states have internal predecessors, (38), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:21:02,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2024-11-28 04:21:02,965 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 55 [2024-11-28 04:21:02,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:02,966 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2024-11-28 04:21:02,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 04:21:02,966 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2024-11-28 04:21:02,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:21:02,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:02,970 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:02,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:21:02,971 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:02,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:02,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1805297171, now seen corresponding path program 1 times [2024-11-28 04:21:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:02,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247509044] [2024-11-28 04:21:02,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:21:03,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755261607] [2024-11-28 04:21:03,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:03,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:03,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:03,034 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:03,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:21:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:03,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:21:03,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:03,894 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-11-28 04:21:03,896 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:06,911 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 04:21:06,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247509044] [2024-11-28 04:21:06,912 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:21:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755261607] [2024-11-28 04:21:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755261607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:06,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:21:06,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2024-11-28 04:21:06,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894351304] [2024-11-28 04:21:06,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:06,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:21:06,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:06,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:21:06,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:21:06,915 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 10 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:21:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:07,567 INFO L93 Difference]: Finished difference Result 109 states and 142 transitions. [2024-11-28 04:21:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 04:21:07,568 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 10 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) Word has length 67 [2024-11-28 04:21:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:07,572 INFO L225 Difference]: With dead ends: 109 [2024-11-28 04:21:07,573 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 04:21:07,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:21:07,575 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 47 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:07,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 225 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:21:07,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 04:21:07,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 82. [2024-11-28 04:21:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 47 states have (on average 1.148936170212766) internal successors, (54), 50 states have internal predecessors, (54), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:21:07,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 99 transitions. [2024-11-28 04:21:07,607 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 99 transitions. Word has length 67 [2024-11-28 04:21:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:07,610 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 99 transitions. [2024-11-28 04:21:07,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 10 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2024-11-28 04:21:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 99 transitions. [2024-11-28 04:21:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:21:07,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:07,612 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:07,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:07,813 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:07,813 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:07,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash 644856999, now seen corresponding path program 1 times [2024-11-28 04:21:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271948153] [2024-11-28 04:21:07,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:21:07,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [893687175] [2024-11-28 04:21:07,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:07,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:07,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:07,868 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:07,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:21:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:07,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:21:07,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2024-11-28 04:21:08,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2024-11-28 04:21:09,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271948153] [2024-11-28 04:21:09,316 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:21:09,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893687175] [2024-11-28 04:21:09,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [893687175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:09,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:21:09,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2024-11-28 04:21:09,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570221618] [2024-11-28 04:21:09,317 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:09,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:21:09,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:09,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:21:09,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:21:09,319 INFO L87 Difference]: Start difference. First operand 82 states and 99 transitions. Second operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 11 states have call predecessors, (25), 10 states have call successors, (25) [2024-11-28 04:21:10,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:10,632 INFO L93 Difference]: Finished difference Result 118 states and 154 transitions. [2024-11-28 04:21:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:21:10,633 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 11 states have call predecessors, (25), 10 states have call successors, (25) Word has length 78 [2024-11-28 04:21:10,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:10,636 INFO L225 Difference]: With dead ends: 118 [2024-11-28 04:21:10,638 INFO L226 Difference]: Without dead ends: 114 [2024-11-28 04:21:10,639 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 04:21:10,640 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 40 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:10,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 306 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:21:10,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-28 04:21:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2024-11-28 04:21:10,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 55 states have (on average 1.2) internal successors, (66), 58 states have internal predecessors, (66), 29 states have call successors, (29), 12 states have call predecessors, (29), 12 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-28 04:21:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 123 transitions. [2024-11-28 04:21:10,680 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 123 transitions. Word has length 78 [2024-11-28 04:21:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:10,681 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 123 transitions. [2024-11-28 04:21:10,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 17 states have internal predecessors, (29), 12 states have call successors, (26), 3 states have call predecessors, (26), 2 states have return successors, (25), 11 states have call predecessors, (25), 10 states have call successors, (25) [2024-11-28 04:21:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 123 transitions. [2024-11-28 04:21:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:21:10,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:10,685 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:10,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:10,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:10,890 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:10,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:10,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1871784667, now seen corresponding path program 1 times [2024-11-28 04:21:10,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:10,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070354439] [2024-11-28 04:21:10,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:10,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-28 04:21:11,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070354439] [2024-11-28 04:21:11,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070354439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:11,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644645038] [2024-11-28 04:21:11,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:21:11,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:11,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:11,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:11,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:21:11,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:21:11,171 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:21:11,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:11,218 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2024-11-28 04:21:11,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:21:11,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644645038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:21:11,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:21:11,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-28 04:21:11,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22139733] [2024-11-28 04:21:11,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:21:11,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:11,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:11,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:11,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:11,222 INFO L87 Difference]: Start difference. First operand 97 states and 123 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-28 04:21:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:11,301 INFO L93 Difference]: Finished difference Result 117 states and 150 transitions. [2024-11-28 04:21:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:21:11,302 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 87 [2024-11-28 04:21:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:11,305 INFO L225 Difference]: With dead ends: 117 [2024-11-28 04:21:11,306 INFO L226 Difference]: Without dead ends: 105 [2024-11-28 04:21:11,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:21:11,307 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:11,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 85 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:21:11,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-28 04:21:11,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2024-11-28 04:21:11,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 61 states have internal predecessors, (71), 33 states have call successors, (33), 12 states have call predecessors, (33), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 04:21:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 136 transitions. [2024-11-28 04:21:11,346 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 136 transitions. Word has length 87 [2024-11-28 04:21:11,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:11,347 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 136 transitions. [2024-11-28 04:21:11,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 5 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-28 04:21:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 136 transitions. [2024-11-28 04:21:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:21:11,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:11,350 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:11,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:21:11,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:21:11,551 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:11,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:11,551 INFO L85 PathProgramCache]: Analyzing trace with hash -618500704, now seen corresponding path program 2 times [2024-11-28 04:21:11,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:11,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389846487] [2024-11-28 04:21:11,552 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:21:11,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:11,575 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:21:11,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-28 04:21:11,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389846487] [2024-11-28 04:21:11,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389846487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:11,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117832685] [2024-11-28 04:21:11,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:21:11,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:11,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:11,868 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:11,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:21:11,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:21:11,951 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:11,952 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:21:11,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:12,005 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 107 proven. 7 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-28 04:21:12,005 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:12,139 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 31 proven. 7 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2024-11-28 04:21:12,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117832685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:12,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:21:12,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 04:21:12,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665469454] [2024-11-28 04:21:12,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:12,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:21:12,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:12,142 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:21:12,142 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:12,142 INFO L87 Difference]: Start difference. First operand 105 states and 136 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 04:21:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:12,212 INFO L93 Difference]: Finished difference Result 129 states and 166 transitions. [2024-11-28 04:21:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:21:12,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 90 [2024-11-28 04:21:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:12,214 INFO L225 Difference]: With dead ends: 129 [2024-11-28 04:21:12,214 INFO L226 Difference]: Without dead ends: 89 [2024-11-28 04:21:12,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:21:12,216 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:12,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:21:12,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-28 04:21:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-28 04:21:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.16) internal successors, (58), 52 states have internal predecessors, (58), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:21:12,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2024-11-28 04:21:12,238 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 90 [2024-11-28 04:21:12,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:12,238 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2024-11-28 04:21:12,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 5 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 04:21:12,239 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2024-11-28 04:21:12,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:21:12,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:21:12,241 INFO L218 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:12,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:21:12,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:21:12,445 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:21:12,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:21:12,446 INFO L85 PathProgramCache]: Analyzing trace with hash 419015342, now seen corresponding path program 3 times [2024-11-28 04:21:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:21:12,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 04:21:12,446 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:21:12,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:21:12,499 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-28 04:21:12,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 41 proven. 7 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2024-11-28 04:21:12,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:21:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149436819] [2024-11-28 04:21:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149436819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:21:12,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170960407] [2024-11-28 04:21:12,801 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:21:12,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:21:12,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:21:12,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:21:12,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:21:12,872 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:21:12,872 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:21:12,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 04:21:12,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:21:13,246 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 114 proven. 4 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2024-11-28 04:21:13,246 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:21:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-28 04:21:13,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170960407] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:21:13,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:21:13,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 8] total 22 [2024-11-28 04:21:13,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118582012] [2024-11-28 04:21:13,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:21:13,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:21:13,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:21:13,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:21:13,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:21:13,605 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 22 states, 17 states have (on average 2.588235294117647) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (33), 12 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-28 04:21:14,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:21:14,011 INFO L93 Difference]: Finished difference Result 93 states and 114 transitions. [2024-11-28 04:21:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:21:14,013 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 17 states have (on average 2.588235294117647) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (33), 12 states have call predecessors, (33), 9 states have call successors, (33) Word has length 106 [2024-11-28 04:21:14,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:21:14,014 INFO L225 Difference]: With dead ends: 93 [2024-11-28 04:21:14,014 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:21:14,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:21:14,015 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:21:14,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 217 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:21:14,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:21:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:21:14,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:21:14,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:21:14,016 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2024-11-28 04:21:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:21:14,016 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:21:14,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 17 states have (on average 2.588235294117647) internal successors, (44), 15 states have internal predecessors, (44), 11 states have call successors, (32), 4 states have call predecessors, (32), 3 states have return successors, (33), 12 states have call predecessors, (33), 9 states have call successors, (33) [2024-11-28 04:21:14,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:21:14,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:21:14,020 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:21:14,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 04:21:14,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 04:21:14,228 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:21:14,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:21:14,675 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:21:14,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:21:14 BoogieIcfgContainer [2024-11-28 04:21:14,691 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:21:14,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:21:14,692 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:21:14,692 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:21:14,693 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:20:58" (3/4) ... [2024-11-28 04:21:14,695 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:21:14,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-28 04:21:14,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 04:21:14,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-28 04:21:14,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:21:14,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:21:14,707 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 04:21:14,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:21:14,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:21:14,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:21:14,813 INFO L158 Benchmark]: Toolchain (without parser) took 17405.16ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 93.7MB in the beginning and 107.3MB in the end (delta: -13.5MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,813 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:21:14,814 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.02ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.1MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,814 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.17ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:21:14,815 INFO L158 Benchmark]: Boogie Preprocessor took 63.81ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,815 INFO L158 Benchmark]: RCFGBuilder took 429.73ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 67.3MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,815 INFO L158 Benchmark]: TraceAbstraction took 16412.69ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 66.9MB in the beginning and 112.6MB in the end (delta: -45.6MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,816 INFO L158 Benchmark]: Witness Printer took 119.71ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 107.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:21:14,818 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 167.8MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.02ms. Allocated memory is still 117.4MB. Free memory was 93.4MB in the beginning and 82.1MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.17ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 63.81ms. Allocated memory is still 117.4MB. Free memory was 80.7MB in the beginning and 79.4MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 429.73ms. Allocated memory is still 117.4MB. Free memory was 79.4MB in the beginning and 67.3MB in the end (delta: 12.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 16412.69ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 66.9MB in the beginning and 112.6MB in the end (delta: -45.6MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. * Witness Printer took 119.71ms. Allocated memory is still 142.6MB. Free memory was 112.6MB in the beginning and 107.3MB in the end (delta: 5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.9s, OverallIterations: 12, TraceHistogramMax: 16, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 145 mSDsluCounter, 1705 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1307 mSDsCounter, 219 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1085 IncrementalHoareTripleChecker+Invalid, 1304 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 219 mSolverCounterUnsat, 398 mSDtfsCounter, 1085 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1052 GetRequests, 927 SyntacticMatches, 3 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 38 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 1250 NumberOfCodeBlocks, 1163 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1391 ConstructedInterpolants, 0 QuantifiedInterpolants, 4599 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1223 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 4003/4090 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((((2 == p) && (A == 1)) && (B == 1)) && (q == 0)) && (r == 1)) && (2 == d)) || ((((p == 1) && (d == B)) && (q == 0)) && (r == A))) || ((((((d == 1) && (p == 1)) && (A == 1)) && (B == 1)) && (r == 0)) && (q == 1))) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((((2 == p) && (A == 1)) && (B == 1)) && (q == 0)) && (r == 1)) && (2 == d)) || ((((((d == 1) && (p == 1)) && (r <= 1)) && (B == 1)) && (q == 0)) && (r == A))) RESULT: Ultimate proved your program to be correct! [2024-11-28 04:21:14,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0afa26d3-cb4e-43a1-a9ff-8562130a25ef/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE