./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/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_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/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_17514e08-8138-477f-ae17-6495273e4242/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 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:18:31,294 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:18:31,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:18:31,367 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:18:31,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:18:31,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:18:31,404 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:18:31,404 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:18:31,405 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:18:31,405 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:18:31,406 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:18:31,406 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:18:31,407 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:18:31,407 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:18:31,407 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:18:31,408 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:18:31,408 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:18:31,408 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:18:31,408 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:18:31,408 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:18:31,409 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:18:31,410 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:18:31,410 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:31,410 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:31,410 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:31,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:31,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:18:31,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:31,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:31,411 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:31,411 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:31,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:18:31,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:18:31,412 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_17514e08-8138-477f-ae17-6495273e4242/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 -> 014459ae7f9a4506b7655fe1f167856eb64829e3739070f7d1f854e4ecd5b5bc [2024-11-27 23:18:31,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:18:31,768 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:18:31,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:18:31,775 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:18:31,775 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:18:31,777 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-11-27 23:18:34,902 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/data/e2a028404/de0bae3fae9d415ab88608429d06590c/FLAG2533b98b3 [2024-11-27 23:18:35,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:18:35,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c [2024-11-27 23:18:35,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/data/e2a028404/de0bae3fae9d415ab88608429d06590c/FLAG2533b98b3 [2024-11-27 23:18:35,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/data/e2a028404/de0bae3fae9d415ab88608429d06590c [2024-11-27 23:18:35,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:18:35,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:18:35,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:35,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:18:35,185 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:18:35,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10b927ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35, skipping insertion in model container [2024-11-27 23:18:35,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,204 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:35,387 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_17514e08-8138-477f-ae17-6495273e4242/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c[576,589] [2024-11-27 23:18:35,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:35,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:18:35,435 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_17514e08-8138-477f-ae17-6495273e4242/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound20.c[576,589] [2024-11-27 23:18:35,442 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:35,456 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:18:35,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35 WrapperNode [2024-11-27 23:18:35,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:35,458 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:35,458 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:18:35,458 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:18:35,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,486 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2024-11-27 23:18:35,486 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:35,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:18:35,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:18:35,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:18:35,495 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,497 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,510 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]. [2024-11-27 23:18:35,511 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,513 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,516 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,519 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,526 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:18:35,528 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:18:35,528 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:18:35,530 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:18:35,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (1/1) ... [2024-11-27 23:18:35,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:35,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:18:35,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:18:35,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:18:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:18:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:18:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:18:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:18:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:18:35,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:18:35,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:18:35,661 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:18:35,663 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:18:35,874 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-27 23:18:35,875 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:18:35,889 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:18:35,890 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 23:18:35,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:35 BoogieIcfgContainer [2024-11-27 23:18:35,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:18:35,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:18:35,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:18:35,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:18:35,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:18:35" (1/3) ... [2024-11-27 23:18:35,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da06566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:35, skipping insertion in model container [2024-11-27 23:18:35,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:35" (2/3) ... [2024-11-27 23:18:35,904 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da06566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:35, skipping insertion in model container [2024-11-27 23:18:35,905 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:35" (3/3) ... [2024-11-27 23:18:35,906 INFO L128 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound20.c [2024-11-27 23:18:35,923 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:18:35,926 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG cohendiv-ll_valuebound20.c that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 23:18:35,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:18:36,012 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;@3261bf35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:18:36,013 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:18:36,017 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:18:36,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:18:36,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:36,024 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:36,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:36,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1333923269, now seen corresponding path program 1 times [2024-11-27 23:18:36,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:36,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682655068] [2024-11-27 23:18:36,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:18:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682655068] [2024-11-27 23:18:36,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682655068] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:36,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362751040] [2024-11-27 23:18:36,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:36,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:36,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:36,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:36,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:18:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:36,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 23:18:36,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:18:36,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362751040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 23:18:36,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636303301] [2024-11-27 23:18:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:36,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:18:36,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:36,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:18:36,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:18:36,313 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.35) internal successors, (27), 19 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:18:36,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:36,337 INFO L93 Difference]: Finished difference Result 61 states and 100 transitions. [2024-11-27 23:18:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:18:36,339 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2024-11-27 23:18:36,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:36,347 INFO L225 Difference]: With dead ends: 61 [2024-11-27 23:18:36,347 INFO L226 Difference]: Without dead ends: 28 [2024-11-27 23:18:36,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:18:36,354 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:36,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:18:36,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-27 23:18:36,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-27 23:18:36,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-27 23:18:36,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-27 23:18:36,401 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 23 [2024-11-27 23:18:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:36,403 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-27 23:18:36,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 23:18:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-27 23:18:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 23:18:36,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:36,406 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:36,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:36,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:36,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:36,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:36,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1751173113, now seen corresponding path program 1 times [2024-11-27 23:18:36,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:36,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62490400] [2024-11-27 23:18:36,611 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:36,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:18:36,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644087965] [2024-11-27 23:18:36,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:36,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:36,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:36,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:36,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:18:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:36,749 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:18:36,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:18:36,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:36,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:36,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62490400] [2024-11-27 23:18:36,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:18:36,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644087965] [2024-11-27 23:18:36,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644087965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:36,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:36,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695085067] [2024-11-27 23:18:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:36,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:36,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:36,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:36,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:36,920 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:18:37,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:37,033 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2024-11-27 23:18:37,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:37,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2024-11-27 23:18:37,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:37,035 INFO L225 Difference]: With dead ends: 38 [2024-11-27 23:18:37,035 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 23:18:37,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:37,037 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:37,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 123 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 23:18:37,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-27 23:18:37,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-27 23:18:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-27 23:18:37,061 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 23 [2024-11-27 23:18:37,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:37,062 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-27 23:18:37,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:18:37,062 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-27 23:18:37,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:18:37,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:37,067 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:37,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:37,267 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,268 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:37,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:37,268 INFO L85 PathProgramCache]: Analyzing trace with hash 77308727, now seen corresponding path program 1 times [2024-11-27 23:18:37,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:37,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396250675] [2024-11-27 23:18:37,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:18:37,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000598532] [2024-11-27 23:18:37,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:37,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:37,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:18:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:37,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:18:37,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:18:37,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:37,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:37,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396250675] [2024-11-27 23:18:37,447 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:18:37,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000598532] [2024-11-27 23:18:37,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000598532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:37,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:37,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:37,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420722033] [2024-11-27 23:18:37,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:37,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:37,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:37,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:37,450 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:37,450 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 23:18:37,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:37,560 INFO L93 Difference]: Finished difference Result 49 states and 64 transitions. [2024-11-27 23:18:37,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:37,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2024-11-27 23:18:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:37,563 INFO L225 Difference]: With dead ends: 49 [2024-11-27 23:18:37,563 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 23:18:37,564 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:37,569 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 8 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:37,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 23:18:37,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2024-11-27 23:18:37,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-27 23:18:37,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2024-11-27 23:18:37,589 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 28 [2024-11-27 23:18:37,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:37,592 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2024-11-27 23:18:37,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-27 23:18:37,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2024-11-27 23:18:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-27 23:18:37,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:37,594 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:37,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:37,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:37,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1963321705, now seen corresponding path program 1 times [2024-11-27 23:18:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122256453] [2024-11-27 23:18:37,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:18:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376486785] [2024-11-27 23:18:37,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:37,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:37,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:37,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:37,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:18:37,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:37,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-27 23:18:37,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 23:18:37,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:37,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:37,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122256453] [2024-11-27 23:18:37,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:18:37,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376486785] [2024-11-27 23:18:37,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376486785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:37,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:37,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:18:37,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262364041] [2024-11-27 23:18:37,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:37,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:37,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:37,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:37,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:37,987 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:18:38,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:38,115 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2024-11-27 23:18:38,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:38,116 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 34 [2024-11-27 23:18:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:38,118 INFO L225 Difference]: With dead ends: 68 [2024-11-27 23:18:38,118 INFO L226 Difference]: Without dead ends: 66 [2024-11-27 23:18:38,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:18:38,120 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:38,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:38,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-27 23:18:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2024-11-27 23:18:38,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 23:18:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 81 transitions. [2024-11-27 23:18:38,137 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 81 transitions. Word has length 34 [2024-11-27 23:18:38,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:38,137 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 81 transitions. [2024-11-27 23:18:38,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:18:38,138 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 81 transitions. [2024-11-27 23:18:38,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-27 23:18:38,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:38,139 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:38,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:38,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:38,344 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:38,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:38,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1428905129, now seen corresponding path program 1 times [2024-11-27 23:18:38,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:38,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022948028] [2024-11-27 23:18:38,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:38,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:38,934 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:38,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:38,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022948028] [2024-11-27 23:18:38,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022948028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:38,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583310117] [2024-11-27 23:18:38,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:38,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:38,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:38,939 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:38,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:18:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:38,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:18:38,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:39,114 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:39,303 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-27 23:18:39,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583310117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:39,305 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:39,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 13 [2024-11-27 23:18:39,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535691207] [2024-11-27 23:18:39,306 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:39,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 23:18:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:39,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 23:18:39,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:39,308 INFO L87 Difference]: Start difference. First operand 59 states and 81 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-27 23:18:39,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:39,485 INFO L93 Difference]: Finished difference Result 67 states and 88 transitions. [2024-11-27 23:18:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:18:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) Word has length 44 [2024-11-27 23:18:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:39,490 INFO L225 Difference]: With dead ends: 67 [2024-11-27 23:18:39,490 INFO L226 Difference]: Without dead ends: 65 [2024-11-27 23:18:39,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:18:39,491 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:39,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 207 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:39,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-27 23:18:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2024-11-27 23:18:39,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 35 states have internal predecessors, (39), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 23:18:39,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2024-11-27 23:18:39,505 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 44 [2024-11-27 23:18:39,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:39,508 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2024-11-27 23:18:39,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 4 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-27 23:18:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2024-11-27 23:18:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 23:18:39,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:39,511 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:39,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:18:39,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:39,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:39,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:39,714 INFO L85 PathProgramCache]: Analyzing trace with hash -657552545, now seen corresponding path program 1 times [2024-11-27 23:18:39,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:39,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502349318] [2024-11-27 23:18:39,714 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:39,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 23:18:39,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:39,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502349318] [2024-11-27 23:18:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502349318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:39,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086255621] [2024-11-27 23:18:39,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:39,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:39,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:39,943 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:39,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:18:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:40,016 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:18:40,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:40,166 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-27 23:18:40,166 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086255621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:40,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:40,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-27 23:18:40,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734346048] [2024-11-27 23:18:40,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:40,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:18:40,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:40,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:18:40,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:18:40,167 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:18:40,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:40,299 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2024-11-27 23:18:40,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:18:40,300 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 50 [2024-11-27 23:18:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:40,301 INFO L225 Difference]: With dead ends: 76 [2024-11-27 23:18:40,301 INFO L226 Difference]: Without dead ends: 74 [2024-11-27 23:18:40,302 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:40,302 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:40,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 153 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:40,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-27 23:18:40,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2024-11-27 23:18:40,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 36 states have (on average 1.1666666666666667) internal successors, (42), 40 states have internal predecessors, (42), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:18:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 91 transitions. [2024-11-27 23:18:40,321 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 91 transitions. Word has length 50 [2024-11-27 23:18:40,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:40,321 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 91 transitions. [2024-11-27 23:18:40,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:18:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 91 transitions. [2024-11-27 23:18:40,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:18:40,325 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:40,325 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:40,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:40,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:40,525 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:40,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1060988137, now seen corresponding path program 1 times [2024-11-27 23:18:40,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:40,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745746355] [2024-11-27 23:18:40,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:40,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:40,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-27 23:18:40,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [176817740] [2024-11-27 23:18:40,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:40,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:40,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:40,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:40,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:18:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:40,619 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-27 23:18:40,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:41,012 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-27 23:18:41,013 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-27 23:18:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745746355] [2024-11-27 23:18:41,317 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-27 23:18:41,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176817740] [2024-11-27 23:18:41,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176817740] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:41,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-11-27 23:18:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360077273] [2024-11-27 23:18:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:41,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:18:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:41,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:18:41,319 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2024-11-27 23:18:41,319 INFO L87 Difference]: Start difference. First operand 69 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 23:18:41,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:41,502 INFO L93 Difference]: Finished difference Result 75 states and 96 transitions. [2024-11-27 23:18:41,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:41,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2024-11-27 23:18:41,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:41,504 INFO L225 Difference]: With dead ends: 75 [2024-11-27 23:18:41,504 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 23:18:41,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:18:41,506 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:41,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 23:18:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-27 23:18:41,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-27 23:18:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2024-11-27 23:18:41,534 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 56 [2024-11-27 23:18:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:41,535 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2024-11-27 23:18:41,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 23:18:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2024-11-27 23:18:41,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:18:41,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:41,536 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:41,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:41,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:41,742 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:41,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:41,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2133234825, now seen corresponding path program 2 times [2024-11-27 23:18:41,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:41,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822314226] [2024-11-27 23:18:41,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:18:41,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:41,769 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:18:41,769 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-27 23:18:42,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:42,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822314226] [2024-11-27 23:18:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822314226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:42,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205086852] [2024-11-27 23:18:42,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:18:42,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:42,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:42,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:42,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:18:42,194 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 23:18:42,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:18:42,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 23:18:42,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2024-11-27 23:18:42,284 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:18:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205086852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:42,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:18:42,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2024-11-27 23:18:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205399995] [2024-11-27 23:18:42,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:42,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:42,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:42,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:42,286 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-27 23:18:42,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:42,404 INFO L93 Difference]: Finished difference Result 111 states and 141 transitions. [2024-11-27 23:18:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:42,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 72 [2024-11-27 23:18:42,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:42,405 INFO L225 Difference]: With dead ends: 111 [2024-11-27 23:18:42,405 INFO L226 Difference]: Without dead ends: 72 [2024-11-27 23:18:42,406 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:18:42,407 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 2 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:42,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 89 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:42,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-27 23:18:42,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2024-11-27 23:18:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 40 states have internal predecessors, (41), 23 states have call successors, (23), 8 states have call predecessors, (23), 8 states have return successors, (23), 21 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-27 23:18:42,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2024-11-27 23:18:42,446 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 72 [2024-11-27 23:18:42,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:42,450 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2024-11-27 23:18:42,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-27 23:18:42,451 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2024-11-27 23:18:42,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-27 23:18:42,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:42,452 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:42,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:42,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:42,653 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:42,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:42,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1024621969, now seen corresponding path program 1 times [2024-11-27 23:18:42,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:42,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108192135] [2024-11-27 23:18:42,654 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:42,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:42,873 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-27 23:18:42,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:42,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108192135] [2024-11-27 23:18:42,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108192135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:42,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671728064] [2024-11-27 23:18:42,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:42,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:42,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:42,877 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:42,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:18:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:42,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 23:18:42,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:43,021 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-27 23:18:43,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2024-11-27 23:18:43,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671728064] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:43,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:43,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-27 23:18:43,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932969969] [2024-11-27 23:18:43,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:43,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:18:43,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:43,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:18:43,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:18:43,185 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:18:43,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:43,362 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2024-11-27 23:18:43,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:18:43,363 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 72 [2024-11-27 23:18:43,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:43,366 INFO L225 Difference]: With dead ends: 80 [2024-11-27 23:18:43,366 INFO L226 Difference]: Without dead ends: 78 [2024-11-27 23:18:43,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-27 23:18:43,371 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:43,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 126 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:18:43,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-27 23:18:43,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2024-11-27 23:18:43,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 21 states have call successors, (21), 9 states have call predecessors, (21), 9 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 23:18:43,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2024-11-27 23:18:43,407 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 72 [2024-11-27 23:18:43,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:43,408 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2024-11-27 23:18:43,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-27 23:18:43,408 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2024-11-27 23:18:43,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-27 23:18:43,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:18:43,414 INFO L218 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:43,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:18:43,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:43,614 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:18:43,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1605956923, now seen corresponding path program 1 times [2024-11-27 23:18:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:43,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688298787] [2024-11-27 23:18:43,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:43,857 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 23:18:43,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688298787] [2024-11-27 23:18:43,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688298787] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:43,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028273338] [2024-11-27 23:18:43,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:43,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:43,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:43,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:43,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:18:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:43,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 23:18:43,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 29 proven. 10 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 23:18:44,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2024-11-27 23:18:44,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028273338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:44,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:44,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 19 [2024-11-27 23:18:44,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456619638] [2024-11-27 23:18:44,464 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:44,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:18:44,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:44,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:18:44,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:18:44,466 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-27 23:18:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:18:45,430 INFO L93 Difference]: Finished difference Result 135 states and 174 transitions. [2024-11-27 23:18:45,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:18:45,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 94 [2024-11-27 23:18:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:18:45,432 INFO L225 Difference]: With dead ends: 135 [2024-11-27 23:18:45,433 INFO L226 Difference]: Without dead ends: 0 [2024-11-27 23:18:45,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=276, Invalid=1056, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 23:18:45,437 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 44 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:18:45,438 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 392 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:18:45,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-27 23:18:45,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-27 23:18:45,438 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) [2024-11-27 23:18:45,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-27 23:18:45,439 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2024-11-27 23:18:45,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:18:45,439 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-27 23:18:45,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 12 states have call successors, (39), 3 states have call predecessors, (39), 1 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2024-11-27 23:18:45,439 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-27 23:18:45,440 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-27 23:18:45,442 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-27 23:18:45,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:18:45,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:18:45,646 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:45,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-27 23:18:47,396 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:18:47,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:18:47 BoogieIcfgContainer [2024-11-27 23:18:47,425 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:18:47,426 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:18:47,426 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:18:47,426 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:18:47,426 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:35" (3/4) ... [2024-11-27 23:18:47,430 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-27 23:18:47,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2024-11-27 23:18:47,437 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-27 23:18:47,443 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-27 23:18:47,443 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-27 23:18:47,443 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-27 23:18:47,443 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-27 23:18:47,533 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:18:47,535 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:18:47,535 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:18:47,537 INFO L158 Benchmark]: Toolchain (without parser) took 12356.99ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 61.3MB in the end (delta: 31.8MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2024-11-27 23:18:47,537 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:47,537 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.87ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.7MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:18:47,537 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.76ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:47,538 INFO L158 Benchmark]: Boogie Preprocessor took 40.76ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:18:47,538 INFO L158 Benchmark]: RCFGBuilder took 363.88ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 68.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:18:47,538 INFO L158 Benchmark]: TraceAbstraction took 11530.97ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 66.1MB in the end (delta: 2.0MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2024-11-27 23:18:47,538 INFO L158 Benchmark]: Witness Printer took 109.25ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 61.3MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:47,541 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 75.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.87ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.7MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.76ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 80.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.76ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 79.3MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 363.88ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 68.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11530.97ms. Allocated memory is still 117.4MB. Free memory was 68.1MB in the beginning and 66.1MB in the end (delta: 2.0MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. * Witness Printer took 109.25ms. Allocated memory is still 117.4MB. Free memory was 66.1MB in the beginning and 61.3MB in the end (delta: 4.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.7s, OverallIterations: 10, TraceHistogramMax: 14, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 1473 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1134 mSDsCounter, 128 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 712 IncrementalHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 128 mSolverCounterUnsat, 339 mSDtfsCounter, 712 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 829 GetRequests, 709 SyntacticMatches, 10 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=7, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 26 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 992 NumberOfCodeBlocks, 992 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1097 ConstructedInterpolants, 0 QuantifiedInterpolants, 2203 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1203 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 20 InterpolantComputations, 7 PerfectInterpolantSequences, 2394/2484 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: 47]: Loop Invariant Derived loop invariant: ((((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (b <= ((__int128) r + y))) && (0 <= r)) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 20)) || (((((((((__int128) a * y) + r) == ((__int128) b + x)) && (0 <= r)) && (r == x)) && (q == 0)) && (x <= 20)) && (b < ((long long) y + 1)))) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: ((((((((((__int128) r + 1) <= y) && (0 <= x)) && (b == y)) && (a == 1)) && ((((__int128) r + y) + ((__int128) q * y)) == ((__int128) b + x))) && (x <= 20)) || ((((((0 <= x) && (x == (r + ((__int128) q * y)))) && (0 <= y)) && (0 <= ((__int128) r + y))) && (((__int128) b + x) == ((((__int128) a * y) + r) + ((__int128) q * y)))) && (x <= 20))) || ((((((b == 0) && (0 <= r)) && (r == x)) && (q == 0)) && (a == 0)) && (x <= 20))) RESULT: Ultimate proved your program to be correct! [2024-11-27 23:18:47,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17514e08-8138-477f-ae17-6495273e4242/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE