./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i --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_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/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_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/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_727ce808-dde9-48b3-9e97-71ae5220d2d1/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 ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:39:03,258 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:39:03,344 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:39:03,349 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:39:03,349 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:39:03,373 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:39:03,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:39:03,373 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:39:03,374 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:39:03,374 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:39:03,374 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:39:03,374 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:39:03,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:39:03,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:39:03,375 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:39:03,375 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:39:03,376 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:03,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:03,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:03,377 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:39:03,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:39:03,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:39:03,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:39:03,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:39:03,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:39:03,378 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_727ce808-dde9-48b3-9e97-71ae5220d2d1/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 -> ea97fe631de3abcfa1030cdb800e2845e2e97a42347e391a7c9fd401d3d0b815 [2024-11-28 02:39:03,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:39:03,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:39:03,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:39:03,641 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:39:03,641 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:39:03,642 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-11-28 02:39:06,534 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/data/c9b60958c/8277fc04f2b245c7be4e4f0d0600fd40/FLAGf09d62ba4 [2024-11-28 02:39:06,781 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:39:06,782 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i [2024-11-28 02:39:06,790 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/data/c9b60958c/8277fc04f2b245c7be4e4f0d0600fd40/FLAGf09d62ba4 [2024-11-28 02:39:06,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/data/c9b60958c/8277fc04f2b245c7be4e4f0d0600fd40 [2024-11-28 02:39:06,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:39:06,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:39:06,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:06,820 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:39:06,824 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:39:06,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:06" (1/1) ... [2024-11-28 02:39:06,828 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc4a375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:06, skipping insertion in model container [2024-11-28 02:39:06,828 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:39:06" (1/1) ... [2024-11-28 02:39:06,845 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:39:07,014 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_727ce808-dde9-48b3-9e97-71ae5220d2d1/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2024-11-28 02:39:07,034 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:07,048 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:39:07,062 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_727ce808-dde9-48b3-9e97-71ae5220d2d1/sv-benchmarks/c/nla-digbench-scaling/divbin_valuebound1.i[950,963] [2024-11-28 02:39:07,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:39:07,098 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:39:07,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07 WrapperNode [2024-11-28 02:39:07,100 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:39:07,101 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:39:07,102 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:39:07,102 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:39:07,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,134 INFO L138 Inliner]: procedures = 16, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2024-11-28 02:39:07,134 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:39:07,135 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:39:07,135 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:39:07,135 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:39:07,144 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,164 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 02:39:07,164 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,171 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,184 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:39:07,184 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:39:07,184 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:39:07,184 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:39:07,185 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (1/1) ... [2024-11-28 02:39:07,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:39:07,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:07,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:39:07,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:39:07,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:39:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:39:07,263 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:39:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:39:07,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:39:07,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:39:07,264 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:39:07,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:39:07,340 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:39:07,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:39:07,551 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 02:39:07,551 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:39:07,563 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:39:07,564 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:39:07,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:07 BoogieIcfgContainer [2024-11-28 02:39:07,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:39:07,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:39:07,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:39:07,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:39:07,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:39:06" (1/3) ... [2024-11-28 02:39:07,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1897095f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:39:07, skipping insertion in model container [2024-11-28 02:39:07,581 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:39:07" (2/3) ... [2024-11-28 02:39:07,582 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1897095f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:39:07, skipping insertion in model container [2024-11-28 02:39:07,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:07" (3/3) ... [2024-11-28 02:39:07,585 INFO L128 eAbstractionObserver]: Analyzing ICFG divbin_valuebound1.i [2024-11-28 02:39:07,608 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:39:07,611 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG divbin_valuebound1.i that has 3 procedures, 27 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:39:07,699 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:39:07,716 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;@18dd0192, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:39:07,716 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:39:07,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:39:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:39:07,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:07,731 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:07,731 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:07,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:07,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1950980119, now seen corresponding path program 1 times [2024-11-28 02:39:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814113594] [2024-11-28 02:39:07,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:39:07,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:07,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814113594] [2024-11-28 02:39:07,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814113594] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:07,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274017858] [2024-11-28 02:39:07,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:07,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:07,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:07,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:07,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:39:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:08,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:39:08,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:39:08,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:39:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274017858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:39:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:39:08,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988923745] [2024-11-28 02:39:08,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:08,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:39:08,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:08,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:39:08,150 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:39:08,152 INFO L87 Difference]: Start difference. First operand has 27 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:39:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:08,174 INFO L93 Difference]: Finished difference Result 51 states and 80 transitions. [2024-11-28 02:39:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:39:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-28 02:39:08,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:08,186 INFO L225 Difference]: With dead ends: 51 [2024-11-28 02:39:08,187 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 02:39:08,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 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 02:39:08,195 INFO L435 NwaCegarLoop]: 33 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, 33 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 02:39:08,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:39:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 02:39:08,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-28 02:39:08,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:39:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2024-11-28 02:39:08,251 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 29 [2024-11-28 02:39:08,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:08,254 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2024-11-28 02:39:08,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:39:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2024-11-28 02:39:08,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:39:08,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:08,257 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:08,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:08,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:39:08,462 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:08,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:08,462 INFO L85 PathProgramCache]: Analyzing trace with hash 464533165, now seen corresponding path program 1 times [2024-11-28 02:39:08,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:08,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796309926] [2024-11-28 02:39:08,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:08,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:39:08,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685149147] [2024-11-28 02:39:08,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:08,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:08,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:08,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:08,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:39:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:08,638 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:39:08,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:39:09,049 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:09,415 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:39:09,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:09,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796309926] [2024-11-28 02:39:09,416 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:39:09,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685149147] [2024-11-28 02:39:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685149147] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:09,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:39:09,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2024-11-28 02:39:09,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867335877] [2024-11-28 02:39:09,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:09,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:39:09,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:09,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:39:09,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:39:09,422 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:39:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:09,866 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2024-11-28 02:39:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:39:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-28 02:39:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:09,868 INFO L225 Difference]: With dead ends: 33 [2024-11-28 02:39:09,868 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 02:39:09,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:39:09,870 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 5 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:09,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:39:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 02:39:09,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 02:39:09,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:39:09,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-28 02:39:09,887 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 29 [2024-11-28 02:39:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:09,888 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-28 02:39:09,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:39:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-28 02:39:09,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:39:09,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:09,890 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:09,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:10,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:10,094 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:10,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:10,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1518036418, now seen corresponding path program 1 times [2024-11-28 02:39:10,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:10,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572267522] [2024-11-28 02:39:10,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:10,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:39:10,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1728514460] [2024-11-28 02:39:10,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:10,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:10,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:10,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:10,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:39:10,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:10,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:39:10,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:39:10,390 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:39:10,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572267522] [2024-11-28 02:39:10,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:39:10,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728514460] [2024-11-28 02:39:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728514460] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:10,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:39:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 9 [2024-11-28 02:39:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057784923] [2024-11-28 02:39:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:10,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:39:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:10,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:39:10,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:39:10,583 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:39:14,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-28 02:39:18,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1] [2024-11-28 02:39:18,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:18,696 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2024-11-28 02:39:18,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:39:18,697 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2024-11-28 02:39:18,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:18,698 INFO L225 Difference]: With dead ends: 39 [2024-11-28 02:39:18,698 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 02:39:18,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:39:18,699 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:18,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 87 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2024-11-28 02:39:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 02:39:18,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2024-11-28 02:39:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 24 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 02:39:18,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2024-11-28 02:39:18,717 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 30 [2024-11-28 02:39:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:18,718 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2024-11-28 02:39:18,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:39:18,718 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2024-11-28 02:39:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:39:18,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:18,719 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:18,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:18,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:18,923 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:18,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:18,925 INFO L85 PathProgramCache]: Analyzing trace with hash -954418699, now seen corresponding path program 1 times [2024-11-28 02:39:18,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:18,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134409778] [2024-11-28 02:39:18,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:18,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:19,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:39:19,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:19,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134409778] [2024-11-28 02:39:19,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134409778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:39:19,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:39:19,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:39:19,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943296908] [2024-11-28 02:39:19,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:19,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:39:19,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:19,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:39:19,992 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:39:19,992 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 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 02:39:20,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:20,073 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2024-11-28 02:39:20,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:39:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 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 36 [2024-11-28 02:39:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:20,077 INFO L225 Difference]: With dead ends: 45 [2024-11-28 02:39:20,077 INFO L226 Difference]: Without dead ends: 29 [2024-11-28 02:39:20,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:39:20,081 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:20,081 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:39:20,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-28 02:39:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-28 02:39:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:39:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-28 02:39:20,098 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 36 [2024-11-28 02:39:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:20,098 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-28 02:39:20,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 3 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 02:39:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-28 02:39:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:39:20,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:20,101 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 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 02:39:20,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:39:20,102 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:20,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:20,102 INFO L85 PathProgramCache]: Analyzing trace with hash -661637022, now seen corresponding path program 1 times [2024-11-28 02:39:20,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:20,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928962749] [2024-11-28 02:39:20,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:20,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:20,463 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:39:20,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928962749] [2024-11-28 02:39:20,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928962749] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544950331] [2024-11-28 02:39:20,465 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:20,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:20,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:20,470 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:20,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:39:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:20,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:39:20,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:20,722 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:39:20,722 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:39:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544950331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:39:20,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:39:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 12 [2024-11-28 02:39:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563284053] [2024-11-28 02:39:20,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:39:20,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:39:20,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:20,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:39:20,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:39:20,910 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:39:21,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:21,411 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2024-11-28 02:39:21,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:39:21,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 36 [2024-11-28 02:39:21,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:21,413 INFO L225 Difference]: With dead ends: 43 [2024-11-28 02:39:21,413 INFO L226 Difference]: Without dead ends: 31 [2024-11-28 02:39:21,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:39:21,415 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:21,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 197 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:39:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-28 02:39:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2024-11-28 02:39:21,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 02:39:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2024-11-28 02:39:21,426 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 36 [2024-11-28 02:39:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:21,426 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2024-11-28 02:39:21,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:39:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2024-11-28 02:39:21,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 02:39:21,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:21,427 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 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 02:39:21,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:39:21,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:21,628 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:21,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 984045888, now seen corresponding path program 1 times [2024-11-28 02:39:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852601205] [2024-11-28 02:39:21,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:21,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:39:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248908190] [2024-11-28 02:39:21,687 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:39:21,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:21,690 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:21,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:39:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:21,805 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:39:21,808 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:39:22,112 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:39,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852601205] [2024-11-28 02:39:39,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:39:39,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248908190] [2024-11-28 02:39:39,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248908190] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:39,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:39:39,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 02:39:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791108044] [2024-11-28 02:39:39,227 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 02:39:39,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:39:39,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:39,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:39:39,228 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=170, Unknown=4, NotChecked=0, Total=210 [2024-11-28 02:39:39,228 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 02:39:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:39,475 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2024-11-28 02:39:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:39:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 37 [2024-11-28 02:39:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:39,477 INFO L225 Difference]: With dead ends: 39 [2024-11-28 02:39:39,478 INFO L226 Difference]: Without dead ends: 37 [2024-11-28 02:39:39,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=42, Invalid=194, Unknown=4, NotChecked=0, Total=240 [2024-11-28 02:39:39,479 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:39,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 108 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:39:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-28 02:39:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2024-11-28 02:39:39,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:39:39,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2024-11-28 02:39:39,496 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 37 [2024-11-28 02:39:39,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:39,497 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2024-11-28 02:39:39,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 02:39:39,497 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2024-11-28 02:39:39,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 02:39:39,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:39,498 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:39,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:39:39,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:39,699 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:39,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:39,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1031267326, now seen corresponding path program 2 times [2024-11-28 02:39:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:39,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009715588] [2024-11-28 02:39:39,700 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:39:39,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:39,756 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:39:39,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:39:41,656 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:39:41,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009715588] [2024-11-28 02:39:41,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009715588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:41,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948212138] [2024-11-28 02:39:41,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:39:41,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:41,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:41,660 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:41,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:39:41,735 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:39:41,735 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:39:41,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 02:39:41,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:39:42,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:39:43,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948212138] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:39:43,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:39:43,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 25 [2024-11-28 02:39:43,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340372141] [2024-11-28 02:39:43,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:39:43,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:39:43,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:43,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:39:43,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:39:43,813 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 20 states have internal predecessors, (37), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 02:39:48,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:39:52,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:39:56,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:40:00,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:40:04,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:40:04,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:04,511 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2024-11-28 02:40:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:40:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 20 states have internal predecessors, (37), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) Word has length 44 [2024-11-28 02:40:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:04,513 INFO L225 Difference]: With dead ends: 54 [2024-11-28 02:40:04,513 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:40:04,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:40:04,515 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 30 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:04,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 205 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 204 Invalid, 5 Unknown, 0 Unchecked, 20.4s Time] [2024-11-28 02:40:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:40:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:40:04,519 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 02:40:04,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:40:04,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2024-11-28 02:40:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:04,520 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:40:04,521 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 20 states have internal predecessors, (37), 13 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 02:40:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:40:04,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:40:04,523 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:40:04,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:04,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:04,729 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-28 02:40:04,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:40:26,611 WARN L286 SmtUtils]: Spent 21.83s on a formula simplification. DAG size of input: 71 DAG size of output: 50 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-28 02:40:26,843 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:40:26,855 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-28 02:40:26,862 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression [2024-11-28 02:40:26,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:40:26 BoogieIcfgContainer [2024-11-28 02:40:26,868 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:40:26,869 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:40:26,869 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:40:26,869 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:40:26,870 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:39:07" (3/4) ... [2024-11-28 02:40:26,872 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:40:26,877 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-28 02:40:26,877 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:40:26,881 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 02:40:26,881 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:40:26,881 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:40:26,882 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:40:26,971 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:40:26,971 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:40:26,971 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:40:26,972 INFO L158 Benchmark]: Toolchain (without parser) took 80155.22ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 92.6MB in the beginning and 102.3MB in the end (delta: -9.6MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,973 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:40:26,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 281.70ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.1MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.43ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:40:26,974 INFO L158 Benchmark]: Boogie Preprocessor took 48.97ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,975 INFO L158 Benchmark]: RCFGBuilder took 380.24ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 68.6MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,975 INFO L158 Benchmark]: TraceAbstraction took 79300.64ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 68.0MB in the beginning and 108.2MB in the end (delta: -40.2MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,976 INFO L158 Benchmark]: Witness Printer took 102.57ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 102.3MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:40:26,977 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 117.4MB. Free memory is still 72.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 281.70ms. Allocated memory is still 117.4MB. Free memory was 92.4MB in the beginning and 81.1MB in the end (delta: 11.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.43ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 80.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.97ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 78.8MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 380.24ms. Allocated memory is still 117.4MB. Free memory was 78.8MB in the beginning and 68.6MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 79300.64ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 68.0MB in the beginning and 108.2MB in the end (delta: -40.2MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. * Witness Printer took 102.57ms. Allocated memory is still 142.6MB. Free memory was 108.2MB in the beginning and 102.3MB in the end (delta: 5.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expression type not yet supported in backtranslation: QuantifierExpression * 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: 21]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.1s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 57 SdHoareTripleChecker+Valid, 29.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 53 mSDsluCounter, 780 SdHoareTripleChecker+Invalid, 29.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 623 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 558 IncrementalHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 157 mSDtfsCounter, 558 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 380 GetRequests, 296 SyntacticMatches, 6 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 19.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=6, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 24.2s InterpolantComputationTime, 446 NumberOfCodeBlocks, 446 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 475 ConstructedInterpolants, 3 QuantifiedInterpolants, 1985 SizeOfPredicates, 10 NumberOfNonLiveVariables, 506 ConjunctsInSsa, 92 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 329/396 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: 37]: Loop Invariant Derived loop invariant: ((((((((2 + (b % 2)) <= b) && (A <= 1)) && (((b % 2) + 1) <= r)) && (B == 1)) && (q == 0)) && (0 == 0)) || ((((((A <= 1) && (B == 1)) && (q == 0)) && (B == b)) && (r == A)) && (0 == 0))) - InvariantResult [Line: 41]: Loop Invariant Derived loop invariant: ((((((((((2 + (b % 2)) <= b) && (A <= 1)) && (((b % 2) + 1) <= r)) && (B == 1)) && (q == 0)) && (A == r)) || ((((((A <= 1) && (((long long) r + 1) <= b)) && (B == 1)) && (q == 0)) && (b <= 2147483647)) && (A == r))) || ((((((b == 1) && (A <= 1)) && (B == 1)) && (q == 1)) && (((long long) r + 1) == A)) && (0 == 0))) || (((0 <= 0) && (0 <= 0)) && (b == B))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:40:27,057 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_727ce808-dde9-48b3-9e97-71ae5220d2d1/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