./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.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_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/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_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/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_9655209b-33ab-4738-b99e-b2efd89ca4b3/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 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:07:30,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:07:30,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:07:30,897 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:07:30,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:07:30,924 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:07:30,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:07:30,925 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:07:30,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:07:30,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:07:30,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:07:30,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:07:30,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:07:30,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:07:30,926 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:07:30,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:07:30,927 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:07:30,928 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:07:30,929 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:07:30,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:30,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:30,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:30,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:30,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:07:30,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:07:30,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:07:30,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:07:30,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:30,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:07:30,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:07:30,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:07:30,932 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_9655209b-33ab-4738-b99e-b2efd89ca4b3/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 -> 278330930f6296a6ef523f9a21bb3281878247b5e50b78eb9077d2b7690716c4 [2024-11-28 04:07:31,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:07:31,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:07:31,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:07:31,332 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:07:31,333 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:07:31,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2024-11-28 04:07:34,769 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/data/0acfad583/aef78b9ccac64d0da9cda233fb40a916/FLAG03637b617 [2024-11-28 04:07:35,173 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:07:35,174 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/sv-benchmarks/c/loop-acceleration/diamond_1-2.c [2024-11-28 04:07:35,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/data/0acfad583/aef78b9ccac64d0da9cda233fb40a916/FLAG03637b617 [2024-11-28 04:07:35,222 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/data/0acfad583/aef78b9ccac64d0da9cda233fb40a916 [2024-11-28 04:07:35,226 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:07:35,230 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:07:35,232 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:35,234 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:07:35,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:07:35,244 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,246 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b65d91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35, skipping insertion in model container [2024-11-28 04:07:35,246 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:07:35,467 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_9655209b-33ab-4738-b99e-b2efd89ca4b3/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2024-11-28 04:07:35,486 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:35,498 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:07:35,511 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_9655209b-33ab-4738-b99e-b2efd89ca4b3/sv-benchmarks/c/loop-acceleration/diamond_1-2.c[373,386] [2024-11-28 04:07:35,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:07:35,535 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:07:35,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35 WrapperNode [2024-11-28 04:07:35,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:07:35,538 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:35,538 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:07:35,538 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:07:35,548 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,577 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2024-11-28 04:07:35,578 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:07:35,579 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:07:35,580 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:07:35,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:07:35,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,607 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:07:35,607 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,607 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,610 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,611 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:07:35,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:07:35,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:07:35,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:07:35,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (1/1) ... [2024-11-28 04:07:35,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:07:35,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:35,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:07:35,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:07:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:07:35,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:07:35,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:07:35,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:07:35,789 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:07:35,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:07:35,950 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 04:07:35,951 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:07:35,966 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:07:35,966 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:07:35,967 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:35 BoogieIcfgContainer [2024-11-28 04:07:35,967 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:07:35,972 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:07:35,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:07:35,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:07:35,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:07:35" (1/3) ... [2024-11-28 04:07:35,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ea654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:35, skipping insertion in model container [2024-11-28 04:07:35,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:07:35" (2/3) ... [2024-11-28 04:07:35,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@711ea654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:07:35, skipping insertion in model container [2024-11-28 04:07:35,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:35" (3/3) ... [2024-11-28 04:07:35,986 INFO L128 eAbstractionObserver]: Analyzing ICFG diamond_1-2.c [2024-11-28 04:07:36,011 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:07:36,013 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG diamond_1-2.c that has 1 procedures, 12 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 04:07:36,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:07:36,116 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;@22ece40f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:07:36,117 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:07:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:07:36,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:36,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:07:36,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:36,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2024-11-28 04:07:36,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:36,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003416559] [2024-11-28 04:07:36,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:36,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:36,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:36,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003416559] [2024-11-28 04:07:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003416559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:36,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:07:36,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767012162] [2024-11-28 04:07:36,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:36,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:07:36,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:36,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:07:36,366 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:07:36,369 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:36,384 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2024-11-28 04:07:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:07:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2024-11-28 04:07:36,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:36,396 INFO L225 Difference]: With dead ends: 20 [2024-11-28 04:07:36,397 INFO L226 Difference]: Without dead ends: 8 [2024-11-28 04:07:36,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:07:36,407 INFO L435 NwaCegarLoop]: 13 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, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:36,412 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:36,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-28 04:07:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-28 04:07:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2024-11-28 04:07:36,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2024-11-28 04:07:36,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:36,456 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2024-11-28 04:07:36,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,457 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2024-11-28 04:07:36,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:07:36,457 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:36,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:07:36,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:07:36,458 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:36,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:36,460 INFO L85 PathProgramCache]: Analyzing trace with hash 889669584, now seen corresponding path program 1 times [2024-11-28 04:07:36,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:36,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787227727] [2024-11-28 04:07:36,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:36,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:36,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:36,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787227727] [2024-11-28 04:07:36,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787227727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:36,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:36,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:07:36,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240006802] [2024-11-28 04:07:36,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:36,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:07:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:36,660 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:07:36,660 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:36,660 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:36,689 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2024-11-28 04:07:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:07:36,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2024-11-28 04:07:36,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:36,692 INFO L225 Difference]: With dead ends: 14 [2024-11-28 04:07:36,692 INFO L226 Difference]: Without dead ends: 10 [2024-11-28 04:07:36,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:36,694 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:36,695 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-11-28 04:07:36,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-11-28 04:07:36,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2024-11-28 04:07:36,702 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2024-11-28 04:07:36,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:36,702 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2024-11-28 04:07:36,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:36,703 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2024-11-28 04:07:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:07:36,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:36,703 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:36,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:07:36,704 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:36,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:36,706 INFO L85 PathProgramCache]: Analyzing trace with hash 211681304, now seen corresponding path program 1 times [2024-11-28 04:07:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905058959] [2024-11-28 04:07:36,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:36,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:36,927 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:36,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905058959] [2024-11-28 04:07:36,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905058959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:36,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062879237] [2024-11-28 04:07:36,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:36,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:36,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:36,931 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:36,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:07:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:37,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:07:37,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:37,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:37,061 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:37,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062879237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:37,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:37,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:07:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001795933] [2024-11-28 04:07:37,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:37,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:07:37,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:37,156 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:07:37,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:07:37,157 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:37,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:37,278 INFO L93 Difference]: Finished difference Result 21 states and 29 transitions. [2024-11-28 04:07:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:07:37,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 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) Word has length 8 [2024-11-28 04:07:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:37,280 INFO L225 Difference]: With dead ends: 21 [2024-11-28 04:07:37,280 INFO L226 Difference]: Without dead ends: 17 [2024-11-28 04:07:37,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:07:37,281 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:37,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:07:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-28 04:07:37,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-11-28 04:07:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:37,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2024-11-28 04:07:37,288 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2024-11-28 04:07:37,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:37,288 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2024-11-28 04:07:37,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:37,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2024-11-28 04:07:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:07:37,289 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:37,289 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:37,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:37,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:37,490 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:37,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:37,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1162247408, now seen corresponding path program 2 times [2024-11-28 04:07:37,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:37,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919612306] [2024-11-28 04:07:37,491 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:37,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:37,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:37,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:37,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919612306] [2024-11-28 04:07:37,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919612306] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:37,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739599267] [2024-11-28 04:07:37,877 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:37,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:37,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:37,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:37,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:07:37,943 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:37,943 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:37,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:07:37,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:38,010 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:38,011 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:38,223 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:38,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739599267] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:38,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:38,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:07:38,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304336540] [2024-11-28 04:07:38,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:38,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:07:38,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:38,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:07:38,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:07:38,226 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:38,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:38,694 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2024-11-28 04:07:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:07:38,696 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 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) Word has length 14 [2024-11-28 04:07:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:38,697 INFO L225 Difference]: With dead ends: 42 [2024-11-28 04:07:38,697 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:07:38,698 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=110, Invalid=162, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:07:38,699 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:38,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 30 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:07:38,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:07:38,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2024-11-28 04:07:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:38,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-11-28 04:07:38,710 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2024-11-28 04:07:38,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:38,710 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-11-28 04:07:38,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:38,711 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-11-28 04:07:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:07:38,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:38,713 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:38,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:38,917 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:38,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash -443532346, now seen corresponding path program 1 times [2024-11-28 04:07:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520149541] [2024-11-28 04:07:38,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:38,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:38,961 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 04:07:38,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:38,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520149541] [2024-11-28 04:07:38,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520149541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:38,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:38,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:07:38,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112325683] [2024-11-28 04:07:38,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:38,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:07:38,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:38,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:07:38,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:38,964 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:38,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:38,985 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2024-11-28 04:07:38,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:07:38,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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) Word has length 20 [2024-11-28 04:07:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:38,986 INFO L225 Difference]: With dead ends: 56 [2024-11-28 04:07:38,986 INFO L226 Difference]: Without dead ends: 41 [2024-11-28 04:07:38,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:38,988 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:38,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-28 04:07:39,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2024-11-28 04:07:39,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:39,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-28 04:07:39,002 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 20 [2024-11-28 04:07:39,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:39,003 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-28 04:07:39,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:39,003 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-28 04:07:39,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:07:39,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:39,004 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:39,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:07:39,004 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:39,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1734840006, now seen corresponding path program 1 times [2024-11-28 04:07:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055166102] [2024-11-28 04:07:39,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:39,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:39,314 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:39,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055166102] [2024-11-28 04:07:39,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055166102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:39,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483241973] [2024-11-28 04:07:39,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:07:39,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:39,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:39,320 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:39,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:07:39,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:07:39,384 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:07:39,386 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:39,462 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:39,794 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:39,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483241973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:39,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:39,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2024-11-28 04:07:39,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34625586] [2024-11-28 04:07:39,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:39,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:07:39,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:39,797 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:07:39,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:07:39,797 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:40,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:40,968 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2024-11-28 04:07:40,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:07:40,968 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 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) Word has length 20 [2024-11-28 04:07:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:40,970 INFO L225 Difference]: With dead ends: 119 [2024-11-28 04:07:40,970 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 04:07:40,971 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=248, Invalid=402, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:07:40,971 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:40,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 30 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:07:40,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 04:07:41,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 58. [2024-11-28 04:07:41,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 57 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:41,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 69 transitions. [2024-11-28 04:07:41,007 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 69 transitions. Word has length 20 [2024-11-28 04:07:41,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:41,008 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 69 transitions. [2024-11-28 04:07:41,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.0) internal successors, (38), 19 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:41,008 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 69 transitions. [2024-11-28 04:07:41,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 04:07:41,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:41,009 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:41,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:07:41,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:41,214 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:41,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:41,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1186991968, now seen corresponding path program 3 times [2024-11-28 04:07:41,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915301466] [2024-11-28 04:07:41,215 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:07:41,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:41,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:07:41,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:41,609 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:41,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:41,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915301466] [2024-11-28 04:07:41,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915301466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:41,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027770929] [2024-11-28 04:07:41,611 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:07:41,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:41,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:41,613 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:41,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:07:41,676 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:07:41,676 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:41,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:07:41,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:41,760 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:41,761 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:42,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027770929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:42,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:42,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 04:07:42,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325331995] [2024-11-28 04:07:42,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:42,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:07:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:42,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:07:42,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:07:42,227 INFO L87 Difference]: Start difference. First operand 58 states and 69 transitions. Second operand has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:47,054 INFO L93 Difference]: Finished difference Result 201 states and 247 transitions. [2024-11-28 04:07:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 04:07:47,055 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 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) Word has length 26 [2024-11-28 04:07:47,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:47,057 INFO L225 Difference]: With dead ends: 201 [2024-11-28 04:07:47,057 INFO L226 Difference]: Without dead ends: 197 [2024-11-28 04:07:47,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=440, Invalid=750, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:07:47,059 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:47,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 45 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:07:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-28 04:07:47,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 82. [2024-11-28 04:07:47,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.2962962962962963) internal successors, (105), 81 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 105 transitions. [2024-11-28 04:07:47,087 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 105 transitions. Word has length 26 [2024-11-28 04:07:47,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:47,087 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 105 transitions. [2024-11-28 04:07:47,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.0) internal successors, (50), 25 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,088 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 105 transitions. [2024-11-28 04:07:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:07:47,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:47,089 INFO L218 NwaCegarLoop]: trace histogram [15, 13, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:47,100 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:07:47,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:47,292 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:47,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:47,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1302043154, now seen corresponding path program 2 times [2024-11-28 04:07:47,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:47,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23891834] [2024-11-28 04:07:47,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:47,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:47,305 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:47,306 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:47,338 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2024-11-28 04:07:47,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:47,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23891834] [2024-11-28 04:07:47,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23891834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:07:47,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:07:47,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:07:47,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887855569] [2024-11-28 04:07:47,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:07:47,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:07:47,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:47,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:07:47,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:47,341 INFO L87 Difference]: Start difference. First operand 82 states and 105 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:07:47,373 INFO L93 Difference]: Finished difference Result 114 states and 137 transitions. [2024-11-28 04:07:47,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:07:47,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) Word has length 36 [2024-11-28 04:07:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:07:47,375 INFO L225 Difference]: With dead ends: 114 [2024-11-28 04:07:47,375 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 04:07:47,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:07:47,376 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:07:47,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:07:47,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 04:07:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-11-28 04:07:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.037037037037037) internal successors, (84), 81 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2024-11-28 04:07:47,400 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 36 [2024-11-28 04:07:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:07:47,400 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2024-11-28 04:07:47,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:07:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2024-11-28 04:07:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:07:47,402 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:07:47,402 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1] [2024-11-28 04:07:47,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:07:47,402 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:07:47,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:07:47,403 INFO L85 PathProgramCache]: Analyzing trace with hash -575739856, now seen corresponding path program 2 times [2024-11-28 04:07:47,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:07:47,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161468335] [2024-11-28 04:07:47,403 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:07:47,423 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:47,423 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:48,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:07:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161468335] [2024-11-28 04:07:48,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161468335] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:07:48,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890173744] [2024-11-28 04:07:48,086 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:07:48,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:07:48,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:07:48,091 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:07:48,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:07:48,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:07:48,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:07:48,169 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:07:48,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:07:48,315 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:48,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:07:49,169 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:07:49,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890173744] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:07:49,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:07:49,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2024-11-28 04:07:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3005975] [2024-11-28 04:07:49,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:07:49,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 04:07:49,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:07:49,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 04:07:49,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=938, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:07:49,172 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:04,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:08:04,255 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-11-28 04:08:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 04:08:04,256 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 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) Word has length 38 [2024-11-28 04:08:04,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:08:04,256 INFO L225 Difference]: With dead ends: 122 [2024-11-28 04:08:04,257 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 04:08:04,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=986, Invalid=1770, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 04:08:04,261 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:08:04,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 72 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:08:04,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 04:08:04,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-28 04:08:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 1.0256410256410255) internal successors, (120), 117 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2024-11-28 04:08:04,297 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 38 [2024-11-28 04:08:04,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:08:04,297 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2024-11-28 04:08:04,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.0) internal successors, (74), 37 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:08:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2024-11-28 04:08:04,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:08:04,298 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:08:04,298 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 1, 1, 1, 1, 1, 1] [2024-11-28 04:08:04,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:08:04,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:04,499 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:08:04,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:08:04,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1031880704, now seen corresponding path program 4 times [2024-11-28 04:08:04,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:08:04,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974094389] [2024-11-28 04:08:04,500 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:08:04,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:08:04,530 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:08:04,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:05,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:08:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974094389] [2024-11-28 04:08:05,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974094389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:08:05,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332667855] [2024-11-28 04:08:05,283 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:08:05,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:08:05,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:08:05,286 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:08:05,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:08:05,371 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:08:05,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:08:05,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-28 04:08:05,375 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:08:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:05,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:08:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:08:06,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332667855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:08:06,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:08:06,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 04:08:06,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464349375] [2024-11-28 04:08:06,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:08:06,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 04:08:06,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:08:06,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 04:08:06,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=670, Invalid=1682, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:08:06,671 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:54,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:54,134 INFO L93 Difference]: Finished difference Result 170 states and 195 transitions. [2024-11-28 04:09:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-11-28 04:09:54,135 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 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) Word has length 50 [2024-11-28 04:09:54,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:54,136 INFO L225 Difference]: With dead ends: 170 [2024-11-28 04:09:54,136 INFO L226 Difference]: Without dead ends: 166 [2024-11-28 04:09:54,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 107.5s TimeCoverageRelationStatistics Valid=1748, Invalid=3222, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 04:09:54,138 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 25 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1200 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:54,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 75 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1200 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:09:54,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-28 04:09:54,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-28 04:09:54,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.018181818181818) internal successors, (168), 165 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:54,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2024-11-28 04:09:54,166 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 50 [2024-11-28 04:09:54,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:54,166 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2024-11-28 04:09:54,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.0) internal successors, (98), 49 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:54,166 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2024-11-28 04:09:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 04:09:54,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:54,168 INFO L218 NwaCegarLoop]: trace histogram [34, 34, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:54,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:09:54,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:09:54,373 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:54,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1528397412, now seen corresponding path program 3 times [2024-11-28 04:09:54,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:54,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351706961] [2024-11-28 04:09:54,374 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:09:54,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:54,459 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-28 04:09:54,459 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:55,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:09:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351706961] [2024-11-28 04:09:55,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351706961] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:09:55,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891027219] [2024-11-28 04:09:55,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:09:55,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:55,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:09:55,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:09:55,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:09:56,056 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-28 04:09:56,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:09:56,058 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 04:09:56,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:09:56,344 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 1156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:09:56,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:09:56,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 612 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-28 04:09:56,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891027219] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:09:56,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:09:56,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 38, 6] total 43 [2024-11-28 04:09:56,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895432961] [2024-11-28 04:09:56,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:09:56,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 04:09:56,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:09:56,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 04:09:56,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1651, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:09:56,780 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 43 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:09:58,734 INFO L93 Difference]: Finished difference Result 178 states and 181 transitions. [2024-11-28 04:09:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-28 04:09:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 43 states have internal predecessors, (87), 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) Word has length 74 [2024-11-28 04:09:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:09:58,735 INFO L225 Difference]: With dead ends: 178 [2024-11-28 04:09:58,735 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 04:09:58,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=310, Invalid=3350, Unknown=0, NotChecked=0, Total=3660 [2024-11-28 04:09:58,737 INFO L435 NwaCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:09:58,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 43 Invalid, 2954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 04:09:58,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 04:09:58,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2024-11-28 04:09:58,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0179640718562875) internal successors, (170), 167 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 170 transitions. [2024-11-28 04:09:58,770 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 170 transitions. Word has length 74 [2024-11-28 04:09:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:09:58,770 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 170 transitions. [2024-11-28 04:09:58,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.0232558139534884) internal successors, (87), 43 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:09:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 170 transitions. [2024-11-28 04:09:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:09:58,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:09:58,772 INFO L218 NwaCegarLoop]: trace histogram [35, 35, 1, 1, 1, 1, 1, 1] [2024-11-28 04:09:58,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:09:58,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:09:58,972 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:09:58,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:09:58,973 INFO L85 PathProgramCache]: Analyzing trace with hash 24758242, now seen corresponding path program 4 times [2024-11-28 04:09:58,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:09:58,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368782950] [2024-11-28 04:09:58,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:09:58,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:09:58,994 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:09:58,994 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:00,378 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:00,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368782950] [2024-11-28 04:10:00,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368782950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:10:00,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991661903] [2024-11-28 04:10:00,379 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:10:00,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:10:00,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:00,381 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:10:00,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:10:00,515 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:10:00,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:10:00,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-11-28 04:10:00,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:10:00,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:00,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:10:03,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:03,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991661903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:10:03,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:10:03,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 75 [2024-11-28 04:10:03,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084839463] [2024-11-28 04:10:03,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:10:03,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-28 04:10:03,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:03,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-28 04:10:03,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1515, Invalid=4035, Unknown=0, NotChecked=0, Total=5550 [2024-11-28 04:10:03,225 INFO L87 Difference]: Start difference. First operand 168 states and 170 transitions. Second operand has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:10:14,178 WARN L286 SmtUtils]: Spent 9.39s on a formula simplification. DAG size of input: 146 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:10:38,659 WARN L286 SmtUtils]: Spent 7.64s on a formula simplification. DAG size of input: 130 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:10:56,934 WARN L286 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:11:17,387 WARN L286 SmtUtils]: Spent 9.82s on a formula simplification. DAG size of input: 114 DAG size of output: 14 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:12:01,991 WARN L286 SmtUtils]: Spent 5.10s on a formula simplification. DAG size of input: 98 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:13:52,266 WARN L286 SmtUtils]: Spent 9.29s on a formula simplification. DAG size of input: 142 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:14:12,700 WARN L286 SmtUtils]: Spent 9.13s on a formula simplification. DAG size of input: 134 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:14:44,241 WARN L286 SmtUtils]: Spent 11.06s on a formula simplification. DAG size of input: 126 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:16:20,531 WARN L286 SmtUtils]: Spent 6.43s on a formula simplification. DAG size of input: 102 DAG size of output: 10 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:18:08,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:08,619 INFO L93 Difference]: Finished difference Result 248 states and 268 transitions. [2024-11-28 04:18:08,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2024-11-28 04:18:08,619 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 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) Word has length 76 [2024-11-28 04:18:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:08,621 INFO L225 Difference]: With dead ends: 248 [2024-11-28 04:18:08,621 INFO L226 Difference]: Without dead ends: 244 [2024-11-28 04:18:08,625 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 485.6s TimeCoverageRelationStatistics Valid=4114, Invalid=7850, Unknown=26, NotChecked=0, Total=11990 [2024-11-28 04:18:08,625 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 4221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:08,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 114 Invalid, 4221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:18:08,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-28 04:18:08,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2024-11-28 04:18:08,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.0123456790123457) internal successors, (246), 243 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:08,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 246 transitions. [2024-11-28 04:18:08,672 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 246 transitions. Word has length 76 [2024-11-28 04:18:08,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:08,673 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 246 transitions. [2024-11-28 04:18:08,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 2.0) internal successors, (150), 75 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:08,673 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 246 transitions. [2024-11-28 04:18:08,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:18:08,674 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:08,675 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:08,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:18:08,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:08,875 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:18:08,876 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:08,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2122055360, now seen corresponding path program 5 times [2024-11-28 04:18:08,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:08,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974725409] [2024-11-28 04:18:08,876 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:18:08,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:08,937 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 04:18:08,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:11,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:18:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974725409] [2024-11-28 04:18:11,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974725409] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:18:11,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158882119] [2024-11-28 04:18:11,155 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:18:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:18:11,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:18:11,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:18:12,122 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 04:18:12,122 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:18:12,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-11-28 04:18:12,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:18:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:12,341 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:18:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:18:16,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158882119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:18:16,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:18:16,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-28 04:18:16,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864810998] [2024-11-28 04:18:16,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:18:16,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-28 04:18:16,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:18:16,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-28 04:18:16,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1505, Invalid=7807, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 04:18:16,537 INFO L87 Difference]: Start difference. First operand 244 states and 246 transitions. Second operand has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:55,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:18:55,983 INFO L93 Difference]: Finished difference Result 256 states and 261 transitions. [2024-11-28 04:18:55,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 04:18:55,986 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 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) Word has length 98 [2024-11-28 04:18:55,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:18:55,989 INFO L225 Difference]: With dead ends: 256 [2024-11-28 04:18:55,989 INFO L226 Difference]: Without dead ends: 252 [2024-11-28 04:18:55,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=4922, Invalid=15100, Unknown=0, NotChecked=0, Total=20022 [2024-11-28 04:18:55,998 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 92 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 4695 mSolverCounterSat, 1085 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 5780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1085 IncrementalHoareTripleChecker+Valid, 4695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:18:56,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 156 Invalid, 5780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1085 Valid, 4695 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:18:56,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-28 04:18:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-28 04:18:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:56,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 254 transitions. [2024-11-28 04:18:56,042 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 254 transitions. Word has length 98 [2024-11-28 04:18:56,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:18:56,042 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 254 transitions. [2024-11-28 04:18:56,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.0) internal successors, (194), 97 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:18:56,043 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 254 transitions. [2024-11-28 04:18:56,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:18:56,044 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:18:56,044 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1] [2024-11-28 04:18:56,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:18:56,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:18:56,245 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:18:56,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:18:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2117254176, now seen corresponding path program 6 times [2024-11-28 04:18:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:18:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027936991] [2024-11-28 04:18:56,246 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:18:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:18:56,372 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 51 check-sat command(s) [2024-11-28 04:18:56,372 INFO L230 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-28 04:18:56,372 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:18:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:18:56,495 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:18:56,495 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:18:56,496 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:18:56,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:18:56,505 INFO L422 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1] [2024-11-28 04:18:56,581 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:18:56,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:18:56 BoogieIcfgContainer [2024-11-28 04:18:56,584 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:18:56,586 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:18:56,587 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:18:56,587 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:18:56,588 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:07:35" (3/4) ... [2024-11-28 04:18:56,589 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:18:56,711 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 104. [2024-11-28 04:18:56,884 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:18:56,884 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:18:56,884 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:18:56,885 INFO L158 Benchmark]: Toolchain (without parser) took 681657.26ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 118.7MB in the beginning and 118.4MB in the end (delta: 325.4kB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2024-11-28 04:18:56,886 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:18:56,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.15ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 107.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:18:56,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.03ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 106.7MB in the end (delta: 988.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:18:56,886 INFO L158 Benchmark]: Boogie Preprocessor took 38.33ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:18:56,887 INFO L158 Benchmark]: RCFGBuilder took 348.45ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 96.1MB in the end (delta: 9.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:18:56,887 INFO L158 Benchmark]: TraceAbstraction took 680615.22ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 95.6MB in the beginning and 128.6MB in the end (delta: -33.0MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. [2024-11-28 04:18:56,891 INFO L158 Benchmark]: Witness Printer took 297.83ms. Allocated memory is still 176.2MB. Free memory was 128.6MB in the beginning and 118.4MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:18:56,893 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 142.6MB. Free memory is still 79.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.15ms. Allocated memory is still 142.6MB. Free memory was 118.5MB in the beginning and 107.7MB in the end (delta: 10.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.03ms. Allocated memory is still 142.6MB. Free memory was 107.7MB in the beginning and 106.7MB in the end (delta: 988.0kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 38.33ms. Allocated memory is still 142.6MB. Free memory was 106.7MB in the beginning and 105.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.45ms. Allocated memory is still 142.6MB. Free memory was 105.4MB in the beginning and 96.1MB in the end (delta: 9.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 680615.22ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 95.6MB in the beginning and 128.6MB in the end (delta: -33.0MB). Peak memory consumption was 79.8MB. Max. memory is 16.1GB. * Witness Printer took 297.83ms. Allocated memory is still 176.2MB. Free memory was 128.6MB in the beginning and 118.4MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 VAL [x=0] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=2, y=1] [L17] COND TRUE x < 99 VAL [x=2, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=4, y=1] [L17] COND TRUE x < 99 VAL [x=4, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=6, y=1] [L17] COND TRUE x < 99 VAL [x=6, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=8, y=1] [L17] COND TRUE x < 99 VAL [x=8, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=10, y=1] [L17] COND TRUE x < 99 VAL [x=10, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=12, y=1] [L17] COND TRUE x < 99 VAL [x=12, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=14, y=1] [L17] COND TRUE x < 99 VAL [x=14, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=16, y=1] [L17] COND TRUE x < 99 VAL [x=16, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=18, y=1] [L17] COND TRUE x < 99 VAL [x=18, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=20, y=1] [L17] COND TRUE x < 99 VAL [x=20, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=22, y=1] [L17] COND TRUE x < 99 VAL [x=22, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=24, y=1] [L17] COND TRUE x < 99 VAL [x=24, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=26, y=1] [L17] COND TRUE x < 99 VAL [x=26, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=28, y=1] [L17] COND TRUE x < 99 VAL [x=28, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=30, y=1] [L17] COND TRUE x < 99 VAL [x=30, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=32, y=1] [L17] COND TRUE x < 99 VAL [x=32, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=34, y=1] [L17] COND TRUE x < 99 VAL [x=34, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=36, y=1] [L17] COND TRUE x < 99 VAL [x=36, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=38, y=1] [L17] COND TRUE x < 99 VAL [x=38, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=40, y=1] [L17] COND TRUE x < 99 VAL [x=40, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=42, y=1] [L17] COND TRUE x < 99 VAL [x=42, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=44, y=1] [L17] COND TRUE x < 99 VAL [x=44, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=46, y=1] [L17] COND TRUE x < 99 VAL [x=46, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=48, y=1] [L17] COND TRUE x < 99 VAL [x=48, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=50, y=1] [L17] COND TRUE x < 99 VAL [x=50, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=52, y=1] [L17] COND TRUE x < 99 VAL [x=52, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=54, y=1] [L17] COND TRUE x < 99 VAL [x=54, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=56, y=1] [L17] COND TRUE x < 99 VAL [x=56, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=58, y=1] [L17] COND TRUE x < 99 VAL [x=58, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=60, y=1] [L17] COND TRUE x < 99 VAL [x=60, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=62, y=1] [L17] COND TRUE x < 99 VAL [x=62, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=64, y=1] [L17] COND TRUE x < 99 VAL [x=64, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=66, y=1] [L17] COND TRUE x < 99 VAL [x=66, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=68, y=1] [L17] COND TRUE x < 99 VAL [x=68, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=70, y=1] [L17] COND TRUE x < 99 VAL [x=70, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=72, y=1] [L17] COND TRUE x < 99 VAL [x=72, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=74, y=1] [L17] COND TRUE x < 99 VAL [x=74, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=76, y=1] [L17] COND TRUE x < 99 VAL [x=76, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=78, y=1] [L17] COND TRUE x < 99 VAL [x=78, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=80, y=1] [L17] COND TRUE x < 99 VAL [x=80, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=82, y=1] [L17] COND TRUE x < 99 VAL [x=82, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=84, y=1] [L17] COND TRUE x < 99 VAL [x=84, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=86, y=1] [L17] COND TRUE x < 99 VAL [x=86, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=88, y=1] [L17] COND TRUE x < 99 VAL [x=88, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=90, y=1] [L17] COND TRUE x < 99 VAL [x=90, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=92, y=1] [L17] COND TRUE x < 99 VAL [x=92, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=94, y=1] [L17] COND TRUE x < 99 VAL [x=94, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=96, y=1] [L17] COND TRUE x < 99 VAL [x=96, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=98, y=1] [L17] COND TRUE x < 99 VAL [x=98, y=1] [L18] COND FALSE !(y % 2 == 0) [L21] x += 2 VAL [x=100, y=1] [L17] COND FALSE !(x < 99) VAL [x=100, y=1] [L25] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 680.4s, OverallIterations: 14, TraceHistogramMax: 50, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 656.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 205 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 205 mSDsluCounter, 629 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 538 mSDsCounter, 2387 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13986 IncrementalHoareTripleChecker+Invalid, 16373 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2387 mSolverCounterUnsat, 91 mSDtfsCounter, 13986 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1171 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 508 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3978 ImplicationChecksByTransitivity, 657.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=252occurred in iteration=13, InterpolantAutomatonStates: 387, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 192 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 982 NumberOfCodeBlocks, 982 NumberOfCodeBlocksAsserted, 262 NumberOfCheckSat, 1249 ConstructedInterpolants, 0 QuantifiedInterpolants, 4864 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1071 ConjunctsInSsa, 383 ConjunctsInUnsatCore, 31 InterpolantComputations, 4 PerfectInterpolantSequences, 818/16483 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-28 04:18:56,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9655209b-33ab-4738-b99e-b2efd89ca4b3/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE