./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.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_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/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_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/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_4e811e5c-f04f-4092-9883-8cb3d107effe/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 a74f29702f111ed73ba2cd9dfef16b5785bcb6a565ff8c65e98f4116fd8b0956 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:35:55,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:35:56,086 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:35:56,093 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:35:56,093 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:35:56,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:35:56,125 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:35:56,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:35:56,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:35:56,125 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:35:56,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:35:56,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:35:56,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:35:56,127 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:35:56,127 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:35:56,127 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:35:56,127 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:35:56,128 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:35:56,129 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:35:56,129 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:56,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:35:56,130 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:35:56,130 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:35:56,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:35:56,131 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_4e811e5c-f04f-4092-9883-8cb3d107effe/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 -> a74f29702f111ed73ba2cd9dfef16b5785bcb6a565ff8c65e98f4116fd8b0956 [2024-11-28 04:35:56,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:35:56,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:35:56,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:35:56,508 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:35:56,509 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:35:56,511 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2024-11-28 04:35:59,730 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/data/0f2879659/f31f889eca4648df8ab974f23f998fbf/FLAG9b88f35a4 [2024-11-28 04:36:00,075 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:00,076 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2024-11-28 04:36:00,107 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/data/0f2879659/f31f889eca4648df8ab974f23f998fbf/FLAG9b88f35a4 [2024-11-28 04:36:00,135 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/data/0f2879659/f31f889eca4648df8ab974f23f998fbf [2024-11-28 04:36:00,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:00,142 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:00,145 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:00,146 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:00,153 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:00,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,157 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dacb5bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00, skipping insertion in model container [2024-11-28 04:36:00,158 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,182 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:00,400 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_4e811e5c-f04f-4092-9883-8cb3d107effe/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2024-11-28 04:36:00,431 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:00,447 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:36:00,466 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_4e811e5c-f04f-4092-9883-8cb3d107effe/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2024-11-28 04:36:00,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:00,500 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:36:00,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00 WrapperNode [2024-11-28 04:36:00,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:00,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:00,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:36:00,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:36:00,521 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,558 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2024-11-28 04:36:00,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:00,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:36:00,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:36:00,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:36:00,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,601 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 04:36:00,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,608 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,624 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,625 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:36:00,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:36:00,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:36:00,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:36:00,633 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (1/1) ... [2024-11-28 04:36:00,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:00,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:00,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:36:00,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:36:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:36:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:36:00,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:36:00,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:36:00,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:36:00,721 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:36:00,810 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:36:00,813 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:36:01,030 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-11-28 04:36:01,031 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:36:01,043 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:36:01,043 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:36:01,044 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:01 BoogieIcfgContainer [2024-11-28 04:36:01,044 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:36:01,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:36:01,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:36:01,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:36:01,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:00" (1/3) ... [2024-11-28 04:36:01,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18754384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:01, skipping insertion in model container [2024-11-28 04:36:01,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:00" (2/3) ... [2024-11-28 04:36:01,055 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18754384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:01, skipping insertion in model container [2024-11-28 04:36:01,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:01" (3/3) ... [2024-11-28 04:36:01,057 INFO L128 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound2.c [2024-11-28 04:36:01,078 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:36:01,081 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hard-ll_unwindbound2.c that has 2 procedures, 28 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:36:01,169 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:36:01,186 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;@1c1c0d80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:36:01,187 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:36:01,193 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-28 04:36:01,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:36:01,204 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:01,205 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:01,206 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:01,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:01,215 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2024-11-28 04:36:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358267825] [2024-11-28 04:36:01,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:01,418 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 04:36:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358267825] [2024-11-28 04:36:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358267825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:01,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:01,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:36:01,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556050171] [2024-11-28 04:36:01,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:01,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:36:01,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:01,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:36:01,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:36:01,458 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:01,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:01,485 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2024-11-28 04:36:01,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:36:01,488 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 04:36:01,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:01,496 INFO L225 Difference]: With dead ends: 53 [2024-11-28 04:36:01,496 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 04:36:01,500 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 04:36:01,504 INFO L435 NwaCegarLoop]: 38 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, 38 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 04:36:01,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:01,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 04:36:01,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-28 04:36:01,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:01,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2024-11-28 04:36:01,552 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2024-11-28 04:36:01,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:01,553 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2024-11-28 04:36:01,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:01,553 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2024-11-28 04:36:01,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:36:01,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:01,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:01,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:36:01,554 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:01,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -2015332289, now seen corresponding path program 1 times [2024-11-28 04:36:01,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:01,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526554111] [2024-11-28 04:36:01,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:01,879 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 04:36:01,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:01,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526554111] [2024-11-28 04:36:01,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526554111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:01,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:01,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:01,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288545186] [2024-11-28 04:36:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:01,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:01,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:01,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:01,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:01,885 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:01,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:01,989 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2024-11-28 04:36:01,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:01,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 04:36:01,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:01,991 INFO L225 Difference]: With dead ends: 38 [2024-11-28 04:36:01,991 INFO L226 Difference]: Without dead ends: 36 [2024-11-28 04:36:01,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:01,993 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:01,993 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 104 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-28 04:36:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2024-11-28 04:36:02,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:02,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2024-11-28 04:36:02,004 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2024-11-28 04:36:02,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:02,004 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2024-11-28 04:36:02,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:02,005 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2024-11-28 04:36:02,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 04:36:02,005 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:02,005 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:02,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:36:02,006 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:02,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:02,006 INFO L85 PathProgramCache]: Analyzing trace with hash 902164894, now seen corresponding path program 1 times [2024-11-28 04:36:02,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:02,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298453377] [2024-11-28 04:36:02,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:02,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:02,101 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 04:36:02,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:02,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298453377] [2024-11-28 04:36:02,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298453377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:02,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:02,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:02,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012207875] [2024-11-28 04:36:02,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:02,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:36:02,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:02,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:36:02,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:36:02,104 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:02,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:02,148 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2024-11-28 04:36:02,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:36:02,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 04:36:02,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:02,150 INFO L225 Difference]: With dead ends: 44 [2024-11-28 04:36:02,150 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 04:36:02,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:36:02,152 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:02,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:02,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 04:36:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-28 04:36:02,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2024-11-28 04:36:02,173 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2024-11-28 04:36:02,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:02,174 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2024-11-28 04:36:02,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:02,174 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2024-11-28 04:36:02,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:36:02,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:02,175 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:02,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:36:02,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:02,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:02,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1435955584, now seen corresponding path program 1 times [2024-11-28 04:36:02,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:02,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971495906] [2024-11-28 04:36:02,177 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:02,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:02,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:02,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:36:02,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:02,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971495906] [2024-11-28 04:36:02,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971495906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:02,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:02,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:02,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998675673] [2024-11-28 04:36:02,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:02,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:02,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:02,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:02,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:02,342 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:36:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:02,473 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2024-11-28 04:36:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:02,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 04:36:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:02,475 INFO L225 Difference]: With dead ends: 44 [2024-11-28 04:36:02,475 INFO L226 Difference]: Without dead ends: 42 [2024-11-28 04:36:02,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:02,476 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:02,477 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 101 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:02,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2024-11-28 04:36:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2024-11-28 04:36:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:36:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-28 04:36:02,487 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2024-11-28 04:36:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:02,487 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-28 04:36:02,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:36:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-28 04:36:02,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:36:02,488 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:02,488 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:02,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:36:02,488 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:02,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:02,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1121341599, now seen corresponding path program 1 times [2024-11-28 04:36:02,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:02,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806401987] [2024-11-28 04:36:02,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:02,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:36:02,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1543983098] [2024-11-28 04:36:02,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:02,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:02,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:02,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:36:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:02,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:36:02,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:36:02,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:36:02,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806401987] [2024-11-28 04:36:02,774 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:36:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543983098] [2024-11-28 04:36:02,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543983098] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:02,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:02,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197619219] [2024-11-28 04:36:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:02,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:02,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:02,776 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:02,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:02,776 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:36:02,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:02,919 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2024-11-28 04:36:02,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:02,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2024-11-28 04:36:02,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:02,922 INFO L225 Difference]: With dead ends: 63 [2024-11-28 04:36:02,925 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 04:36:02,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:02,927 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:02,927 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:02,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 04:36:02,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2024-11-28 04:36:02,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:36:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2024-11-28 04:36:02,955 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 20 [2024-11-28 04:36:02,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:02,959 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2024-11-28 04:36:02,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:36:02,960 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2024-11-28 04:36:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 04:36:02,961 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:02,961 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:02,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:36:03,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:03,162 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:03,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:03,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1012149342, now seen corresponding path program 1 times [2024-11-28 04:36:03,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:03,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689720889] [2024-11-28 04:36:03,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:03,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:36:03,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705234083] [2024-11-28 04:36:03,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:03,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:03,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:03,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:03,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:36:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:03,291 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:36:03,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:36:03,479 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:36:03,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:03,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689720889] [2024-11-28 04:36:03,479 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:36:03,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705234083] [2024-11-28 04:36:03,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705234083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:03,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:03,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:03,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133917641] [2024-11-28 04:36:03,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:03,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:03,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:03,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:03,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:03,482 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:36:03,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:03,592 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2024-11-28 04:36:03,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:03,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-28 04:36:03,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:03,597 INFO L225 Difference]: With dead ends: 62 [2024-11-28 04:36:03,597 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 04:36:03,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:03,602 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:03,602 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:03,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 04:36:03,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2024-11-28 04:36:03,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 39 states have internal predecessors, (47), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:36:03,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 76 transitions. [2024-11-28 04:36:03,635 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 76 transitions. Word has length 28 [2024-11-28 04:36:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:03,636 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 76 transitions. [2024-11-28 04:36:03,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:36:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 76 transitions. [2024-11-28 04:36:03,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:36:03,637 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:03,637 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:03,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:03,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:03,838 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:03,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:03,839 INFO L85 PathProgramCache]: Analyzing trace with hash -423948294, now seen corresponding path program 1 times [2024-11-28 04:36:03,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683354604] [2024-11-28 04:36:03,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:36:04,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:04,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683354604] [2024-11-28 04:36:04,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683354604] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:04,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735231557] [2024-11-28 04:36:04,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:04,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:04,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:04,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:04,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:36:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:04,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:36:04,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:04,236 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:36:04,237 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:36:04,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735231557] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:04,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:04,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 5 [2024-11-28 04:36:04,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942817747] [2024-11-28 04:36:04,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:04,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:04,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:04,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:04,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:04,351 INFO L87 Difference]: Start difference. First operand 58 states and 76 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:36:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:04,438 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2024-11-28 04:36:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:36:04,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 35 [2024-11-28 04:36:04,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:04,443 INFO L225 Difference]: With dead ends: 97 [2024-11-28 04:36:04,446 INFO L226 Difference]: Without dead ends: 72 [2024-11-28 04:36:04,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:04,448 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:04,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:04,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2024-11-28 04:36:04,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2024-11-28 04:36:04,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 50 states have internal predecessors, (58), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:36:04,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2024-11-28 04:36:04,467 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 35 [2024-11-28 04:36:04,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:04,467 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2024-11-28 04:36:04,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:36:04,467 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2024-11-28 04:36:04,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:36:04,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:04,468 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:04,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:04,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:04,669 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:04,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:04,669 INFO L85 PathProgramCache]: Analyzing trace with hash -897447482, now seen corresponding path program 1 times [2024-11-28 04:36:04,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:04,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811794717] [2024-11-28 04:36:04,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:04,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:36:04,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347803957] [2024-11-28 04:36:04,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:04,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:04,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:04,708 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:04,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:36:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:04,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:36:04,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:04,998 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:36:04,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:36:05,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:05,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811794717] [2024-11-28 04:36:05,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:36:05,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347803957] [2024-11-28 04:36:05,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347803957] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:05,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:36:05,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-28 04:36:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162865346] [2024-11-28 04:36:05,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:05,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:05,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:05,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:05,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:36:05,171 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:36:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:05,292 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2024-11-28 04:36:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:05,293 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-28 04:36:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:05,294 INFO L225 Difference]: With dead ends: 85 [2024-11-28 04:36:05,294 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 04:36:05,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:36:05,296 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:05,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 04:36:05,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 80. [2024-11-28 04:36:05,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.2075471698113207) internal successors, (64), 56 states have internal predecessors, (64), 17 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:36:05,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2024-11-28 04:36:05,322 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 38 [2024-11-28 04:36:05,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:05,323 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2024-11-28 04:36:05,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:36:05,323 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2024-11-28 04:36:05,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:36:05,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:05,329 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:05,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:36:05,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:05,530 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:05,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash 800816503, now seen corresponding path program 1 times [2024-11-28 04:36:05,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:05,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757912419] [2024-11-28 04:36:05,530 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:05,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:36:05,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:05,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757912419] [2024-11-28 04:36:05,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757912419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:05,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:05,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:36:05,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205664453] [2024-11-28 04:36:05,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:05,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:36:05,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:05,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:36:05,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:36:05,760 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 04:36:05,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:05,839 INFO L93 Difference]: Finished difference Result 88 states and 105 transitions. [2024-11-28 04:36:05,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:36:05,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 44 [2024-11-28 04:36:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:05,841 INFO L225 Difference]: With dead ends: 88 [2024-11-28 04:36:05,841 INFO L226 Difference]: Without dead ends: 71 [2024-11-28 04:36:05,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:36:05,845 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:05,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 115 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:36:05,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-28 04:36:05,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-28 04:36:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 50 states have internal predecessors, (57), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:36:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2024-11-28 04:36:05,864 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 44 [2024-11-28 04:36:05,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:05,865 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2024-11-28 04:36:05,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 04:36:05,865 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2024-11-28 04:36:05,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:36:05,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:05,866 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:05,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:36:05,867 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:05,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1829451524, now seen corresponding path program 1 times [2024-11-28 04:36:05,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:05,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561275487] [2024-11-28 04:36:05,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:05,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:36:05,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196557972] [2024-11-28 04:36:05,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:05,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:05,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:36:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:36:06,026 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 04:36:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 04:36:06,100 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 04:36:06,101 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 04:36:06,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:36:06,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:06,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:06,309 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:06,340 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:36:06,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:36:06 BoogieIcfgContainer [2024-11-28 04:36:06,348 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:36:06,348 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:36:06,348 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:36:06,348 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:36:06,352 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:01" (3/4) ... [2024-11-28 04:36:06,353 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 04:36:06,447 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 32. [2024-11-28 04:36:06,539 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:36:06,539 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:36:06,539 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:36:06,540 INFO L158 Benchmark]: Toolchain (without parser) took 6398.13ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 107.4MB in the beginning and 305.2MB in the end (delta: -197.8MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2024-11-28 04:36:06,541 INFO L158 Benchmark]: CDTParser took 0.53ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:06,541 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.28ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 95.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:36:06,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.23ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 94.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:06,542 INFO L158 Benchmark]: Boogie Preprocessor took 67.83ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:06,542 INFO L158 Benchmark]: RCFGBuilder took 415.81ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 81.2MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 04:36:06,542 INFO L158 Benchmark]: TraceAbstraction took 5300.87ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 80.5MB in the beginning and 311.3MB in the end (delta: -230.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:36:06,543 INFO L158 Benchmark]: Witness Printer took 191.13ms. Allocated memory is still 352.3MB. Free memory was 311.3MB in the beginning and 305.2MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:36:06,545 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.28ms. Allocated memory is still 142.6MB. Free memory was 107.1MB in the beginning and 95.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.23ms. Allocated memory is still 142.6MB. Free memory was 95.9MB in the beginning and 94.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.83ms. Allocated memory is still 142.6MB. Free memory was 94.3MB in the beginning and 92.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 415.81ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 81.2MB in the end (delta: 11.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 5300.87ms. Allocated memory was 142.6MB in the beginning and 352.3MB in the end (delta: 209.7MB). Free memory was 80.5MB in the beginning and 311.3MB in the end (delta: -230.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 191.13ms. Allocated memory is still 352.3MB. Free memory was 311.3MB in the beginning and 305.2MB in the end (delta: 6.1MB). 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: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(B >= 1) [L12] COND FALSE !(!cond) VAL [counter=0] [L28] RET assume_abort_if_not(B >= 1) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [A=1, B=1, counter=0, d=1, p=1, q=0, r=1] [L35] EXPR counter++ VAL [A=1, B=1, counter=1, d=1, p=1, q=0, r=1] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L36] RET __VERIFIER_assert(q == 0) VAL [A=1, B=1, counter=1, d=1, p=1, q=0, r=1] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L37] RET __VERIFIER_assert(r == A) VAL [A=1, B=1, counter=1, d=1, p=1, q=0, r=1] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=1, B=1, counter=1, d=1, p=1, q=0, r=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=1, B=1, counter=1, d=2, p=2, q=0, r=1] [L35] EXPR counter++ VAL [A=1, B=1, counter=2, d=2, p=2, q=0, r=1] [L35] COND TRUE counter++<2 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L36] RET __VERIFIER_assert(q == 0) VAL [A=1, B=1, counter=2, d=2, p=2, q=0, r=1] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L37] RET __VERIFIER_assert(r == A) VAL [A=1, B=1, counter=2, d=2, p=2, q=0, r=1] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=2] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=1, B=1, counter=2, d=2, p=2, q=0, r=1] [L39] COND TRUE !(r >= d) VAL [A=1, B=1, counter=2, d=2, p=2, q=0, r=1] [L45] EXPR counter++ VAL [A=1, B=1, counter=3, d=2, p=2, q=0, r=1] [L45] COND FALSE !(counter++<2) [L59] CALL __VERIFIER_assert(A == d*q + r) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L59] RET __VERIFIER_assert(A == d*q + r) VAL [A=1, B=1, counter=3, d=2, p=2, q=0, r=1] [L60] CALL __VERIFIER_assert(B == d) VAL [\old(cond)=0, counter=3] [L15] COND TRUE !(cond) VAL [\old(cond)=0, counter=3] [L17] reach_error() VAL [\old(cond)=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 10, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 52 mSDsluCounter, 850 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 570 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 230 IncrementalHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 280 mSDtfsCounter, 230 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 183 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=8, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 435 NumberOfCodeBlocks, 435 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 308 ConstructedInterpolants, 0 QuantifiedInterpolants, 792 SizeOfPredicates, 4 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 301/312 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 04:36:06,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e811e5c-f04f-4092-9883-8cb3d107effe/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