./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC --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 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:55:07,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:55:07,106 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:55:07,112 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:55:07,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:55:07,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:55:07,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:55:07,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:55:07,141 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:55:07,141 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:55:07,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:55:07,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:55:07,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:55:07,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:55:07,142 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:55:07,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:55:07,142 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:55:07,142 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:55:07,143 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:55:07,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:55:07,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:55:07,144 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:55:07,144 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:55:07,144 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:55:07,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:55:07,145 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:55:07,145 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:55:07,145 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:07,145 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:55:07,145 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:55:07,146 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:55:07,146 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:55:07,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:07,146 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:55:07,146 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:55:07,147 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:55:07,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:55:07,148 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_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC 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 -> 7f61497696f0e412e267c342267f07f29bf3ce290f707b3aa1a4f0ac00ff0274 [2024-11-24 00:55:07,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:55:07,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:55:07,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:55:07,484 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:55:07,484 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:55:07,487 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2024-11-24 00:55:10,861 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/data/14824e393/c2603549cbf0475d916c2b21141967d7/FLAG09e841e8b [2024-11-24 00:55:11,107 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:55:11,108 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c [2024-11-24 00:55:11,117 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/data/14824e393/c2603549cbf0475d916c2b21141967d7/FLAG09e841e8b [2024-11-24 00:55:11,132 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/data/14824e393/c2603549cbf0475d916c2b21141967d7 [2024-11-24 00:55:11,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:55:11,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:55:11,137 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:55:11,137 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:55:11,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:55:11,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2244b7e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11, skipping insertion in model container [2024-11-24 00:55:11,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,155 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:55:11,283 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_2b79b841-502d-47d7-8445-e446ff3baba3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2024-11-24 00:55:11,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:55:11,311 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:55:11,322 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_2b79b841-502d-47d7-8445-e446ff3baba3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound5.c[597,610] [2024-11-24 00:55:11,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:55:11,345 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:55:11,346 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11 WrapperNode [2024-11-24 00:55:11,346 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:55:11,347 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:55:11,347 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:55:11,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:55:11,355 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,370 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,391 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-24 00:55:11,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:55:11,392 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:55:11,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:55:11,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:55:11,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,408 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,430 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]. [2024-11-24 00:55:11,430 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,430 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,433 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,434 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,438 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,439 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,441 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:55:11,442 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:55:11,442 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:55:11,442 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:55:11,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (1/1) ... [2024-11-24 00:55:11,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:55:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:11,480 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:55:11,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:55:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:55:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:55:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:55:11,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:55:11,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:55:11,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:55:11,584 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:55:11,587 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:55:11,735 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-24 00:55:11,736 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:55:11,748 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:55:11,749 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:55:11,749 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:55:11 BoogieIcfgContainer [2024-11-24 00:55:11,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:55:11,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:55:11,752 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:55:11,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:55:11,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:55:11" (1/3) ... [2024-11-24 00:55:11,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156cb636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:55:11, skipping insertion in model container [2024-11-24 00:55:11,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:55:11" (2/3) ... [2024-11-24 00:55:11,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156cb636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:55:11, skipping insertion in model container [2024-11-24 00:55:11,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:55:11" (3/3) ... [2024-11-24 00:55:11,763 INFO L128 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound5.c [2024-11-24 00:55:11,785 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:55:11,787 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG bresenham-ll_unwindbound5.c that has 2 procedures, 21 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:55:11,846 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:55:11,860 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;@75e0b430, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:55:11,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:55:11,865 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:11,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-24 00:55:11,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:11,873 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:11,874 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:11,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:11,882 INFO L85 PathProgramCache]: Analyzing trace with hash 798370362, now seen corresponding path program 1 times [2024-11-24 00:55:11,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:11,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228404121] [2024-11-24 00:55:11,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:11,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:12,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:12,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:12,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228404121] [2024-11-24 00:55:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228404121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:12,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:12,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:55:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241775434] [2024-11-24 00:55:12,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:12,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:55:12,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:12,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:55:12,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:55:12,156 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-24 00:55:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:12,186 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2024-11-24 00:55:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:55:12,191 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 8 [2024-11-24 00:55:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:12,200 INFO L225 Difference]: With dead ends: 40 [2024-11-24 00:55:12,200 INFO L226 Difference]: Without dead ends: 17 [2024-11-24 00:55:12,205 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 [2024-11-24 00:55:12,216 INFO L435 NwaCegarLoop]: 24 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, 24 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 [2024-11-24 00:55:12,217 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:12,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-24 00:55:12,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-24 00:55:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:55:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-24 00:55:12,274 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 8 [2024-11-24 00:55:12,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:12,274 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-24 00:55:12,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-11-24 00:55:12,275 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-24 00:55:12,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 00:55:12,277 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:12,277 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:12,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:55:12,278 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:12,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:12,280 INFO L85 PathProgramCache]: Analyzing trace with hash 295298814, now seen corresponding path program 1 times [2024-11-24 00:55:12,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:12,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74776875] [2024-11-24 00:55:12,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:12,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:12,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2013903983] [2024-11-24 00:55:12,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:12,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:12,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:12,353 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:12,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:55:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:12,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:55:12,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:12,737 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:12,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:12,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74776875] [2024-11-24 00:55:12,739 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:12,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013903983] [2024-11-24 00:55:12,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013903983] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:12,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:12,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056200351] [2024-11-24 00:55:12,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:12,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:12,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:12,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:12,742 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-24 00:55:12,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:12,913 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2024-11-24 00:55:12,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:55:12,914 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 9 [2024-11-24 00:55:12,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:12,916 INFO L225 Difference]: With dead ends: 32 [2024-11-24 00:55:12,916 INFO L226 Difference]: Without dead ends: 30 [2024-11-24 00:55:12,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:55:12,919 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 9 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:12,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 52 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:12,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-24 00:55:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-11-24 00:55:12,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:12,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-24 00:55:12,937 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 9 [2024-11-24 00:55:12,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:12,938 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-24 00:55:12,938 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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) [2024-11-24 00:55:12,938 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-24 00:55:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 00:55:12,938 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:12,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:12,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:55:13,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:13,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:13,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:13,140 INFO L85 PathProgramCache]: Analyzing trace with hash 368316555, now seen corresponding path program 1 times [2024-11-24 00:55:13,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:13,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430232646] [2024-11-24 00:55:13,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:13,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:13,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:13,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:13,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430232646] [2024-11-24 00:55:13,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430232646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:13,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:13,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:55:13,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351866097] [2024-11-24 00:55:13,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:13,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:55:13,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:13,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:55:13,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:55:13,231 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-24 00:55:13,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:13,253 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2024-11-24 00:55:13,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:55:13,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 9 [2024-11-24 00:55:13,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:13,257 INFO L225 Difference]: With dead ends: 33 [2024-11-24 00:55:13,257 INFO L226 Difference]: Without dead ends: 25 [2024-11-24 00:55:13,257 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 [2024-11-24 00:55:13,258 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:13,259 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:55:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-24 00:55:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-24 00:55:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-24 00:55:13,267 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 9 [2024-11-24 00:55:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:13,267 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-24 00:55:13,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-24 00:55:13,268 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-24 00:55:13,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-24 00:55:13,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:13,269 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:13,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:55:13,269 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:13,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:13,270 INFO L85 PathProgramCache]: Analyzing trace with hash -156697420, now seen corresponding path program 1 times [2024-11-24 00:55:13,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:13,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690182786] [2024-11-24 00:55:13,271 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:13,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:13,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982337060] [2024-11-24 00:55:13,307 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:13,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:13,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:13,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:55:13,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:13,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:55:13,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:13,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:13,596 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:55:13,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:13,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690182786] [2024-11-24 00:55:13,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:13,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982337060] [2024-11-24 00:55:13,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982337060] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:55:13,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:55:13,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:55:13,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857909015] [2024-11-24 00:55:13,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:55:13,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:55:13,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:13,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:55:13,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:55:13,603 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 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) [2024-11-24 00:55:13,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:13,764 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2024-11-24 00:55:13,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:55:13,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 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 16 [2024-11-24 00:55:13,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:13,766 INFO L225 Difference]: With dead ends: 35 [2024-11-24 00:55:13,766 INFO L226 Difference]: Without dead ends: 27 [2024-11-24 00:55:13,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:55:13,768 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 6 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:13,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-24 00:55:13,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-24 00:55:13,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:13,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2024-11-24 00:55:13,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 16 [2024-11-24 00:55:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:13,779 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2024-11-24 00:55:13,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 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) [2024-11-24 00:55:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2024-11-24 00:55:13,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:55:13,785 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:13,785 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:13,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:55:13,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:13,986 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:13,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:13,987 INFO L85 PathProgramCache]: Analyzing trace with hash -716773380, now seen corresponding path program 1 times [2024-11-24 00:55:13,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:13,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67565981] [2024-11-24 00:55:13,988 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:14,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [54446602] [2024-11-24 00:55:14,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:14,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:14,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:14,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:14,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:55:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:14,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:55:14,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:14,436 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:14,440 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:14,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-24 00:55:14,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67565981] [2024-11-24 00:55:14,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:14,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54446602] [2024-11-24 00:55:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54446602] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:14,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:55:14,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-11-24 00:55:14,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664480210] [2024-11-24 00:55:14,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:14,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:55:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:14,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:55:14,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:55:14,673 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:14,956 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2024-11-24 00:55:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:55:14,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2024-11-24 00:55:14,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:14,963 INFO L225 Difference]: With dead ends: 44 [2024-11-24 00:55:14,964 INFO L226 Difference]: Without dead ends: 40 [2024-11-24 00:55:14,965 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:55:14,966 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:14,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 73 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-24 00:55:14,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2024-11-24 00:55:14,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:14,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2024-11-24 00:55:14,989 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2024-11-24 00:55:14,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:14,991 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2024-11-24 00:55:14,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2024-11-24 00:55:14,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-24 00:55:14,992 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:14,992 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:15,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:55:15,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:15,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:15,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -643755639, now seen corresponding path program 1 times [2024-11-24 00:55:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113715947] [2024-11-24 00:55:15,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:15,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:15,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113715947] [2024-11-24 00:55:15,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113715947] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:15,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40797984] [2024-11-24 00:55:15,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:15,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:15,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:15,423 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:15,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:55:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:15,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:55:15,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:15,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:15,542 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:15,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40797984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:15,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:15,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-24 00:55:15,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274628631] [2024-11-24 00:55:15,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:15,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:55:15,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:15,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:55:15,625 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:55:15,626 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:55:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:15,750 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2024-11-24 00:55:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:55:15,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 20 [2024-11-24 00:55:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:15,752 INFO L225 Difference]: With dead ends: 72 [2024-11-24 00:55:15,752 INFO L226 Difference]: Without dead ends: 66 [2024-11-24 00:55:15,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:55:15,754 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 35 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:15,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 83 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-24 00:55:15,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2024-11-24 00:55:15,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 00:55:15,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2024-11-24 00:55:15,772 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 20 [2024-11-24 00:55:15,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:15,772 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2024-11-24 00:55:15,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:55:15,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2024-11-24 00:55:15,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-24 00:55:15,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:15,774 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:15,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:55:15,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:55:15,975 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:15,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash 935756278, now seen corresponding path program 1 times [2024-11-24 00:55:15,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:15,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21779314] [2024-11-24 00:55:15,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:15,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:16,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565400307] [2024-11-24 00:55:16,004 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:16,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:16,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:16,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:55:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:16,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-24 00:55:16,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:16,362 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:55:16,362 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:55:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:16,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21779314] [2024-11-24 00:55:16,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:16,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565400307] [2024-11-24 00:55:16,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565400307] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:16,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:55:16,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2024-11-24 00:55:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330942275] [2024-11-24 00:55:16,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:16,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:55:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:16,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:55:16,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:55:16,631 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 14 states, 10 states have (on average 2.5) internal successors, (25), 13 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:55:16,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:16,911 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2024-11-24 00:55:16,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:55:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 13 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 27 [2024-11-24 00:55:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:16,913 INFO L225 Difference]: With dead ends: 86 [2024-11-24 00:55:16,913 INFO L226 Difference]: Without dead ends: 80 [2024-11-24 00:55:16,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:55:16,915 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:16,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 99 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:55:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-24 00:55:16,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2024-11-24 00:55:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-24 00:55:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2024-11-24 00:55:16,944 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 27 [2024-11-24 00:55:16,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:16,945 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2024-11-24 00:55:16,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.5) internal successors, (25), 13 states have internal predecessors, (25), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:55:16,945 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2024-11-24 00:55:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-24 00:55:16,947 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:16,947 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:16,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:17,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:17,152 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:17,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:17,153 INFO L85 PathProgramCache]: Analyzing trace with hash -85312076, now seen corresponding path program 1 times [2024-11-24 00:55:17,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109298124] [2024-11-24 00:55:17,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:17,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127169025] [2024-11-24 00:55:17,180 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:17,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:17,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:17,182 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:17,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:55:17,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:55:17,261 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 00:55:17,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:55:17,681 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:18,181 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:55:18,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109298124] [2024-11-24 00:55:18,182 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:18,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127169025] [2024-11-24 00:55:18,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127169025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:18,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:55:18,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 22 [2024-11-24 00:55:18,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942810098] [2024-11-24 00:55:18,183 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:18,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 00:55:18,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:18,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 00:55:18,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2024-11-24 00:55:18,187 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 00:55:19,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:19,202 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2024-11-24 00:55:19,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 00:55:19,202 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 27 [2024-11-24 00:55:19,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:19,206 INFO L225 Difference]: With dead ends: 87 [2024-11-24 00:55:19,206 INFO L226 Difference]: Without dead ends: 79 [2024-11-24 00:55:19,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=231, Invalid=1029, Unknown=0, NotChecked=0, Total=1260 [2024-11-24 00:55:19,209 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:19,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 169 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:19,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-24 00:55:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 54. [2024-11-24 00:55:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 00:55:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-24 00:55:19,239 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 27 [2024-11-24 00:55:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:19,240 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-24 00:55:19,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-24 00:55:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-24 00:55:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:55:19,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:19,243 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:19,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:19,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:19,444 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:19,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash 380685067, now seen corresponding path program 2 times [2024-11-24 00:55:19,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:19,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423128887] [2024-11-24 00:55:19,445 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:55:19,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:19,474 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:55:19,474 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:55:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:55:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423128887] [2024-11-24 00:55:19,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423128887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316691417] [2024-11-24 00:55:19,904 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:55:19,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:19,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:19,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:55:19,983 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:55:19,983 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:55:19,984 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:55:19,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:55:20,099 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:20,259 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-24 00:55:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316691417] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:55:20,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:55:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 9 [2024-11-24 00:55:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399821466] [2024-11-24 00:55:20,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:20,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:55:20,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:20,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:55:20,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:55:20,265 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 00:55:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:20,383 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2024-11-24 00:55:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:55:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 53 [2024-11-24 00:55:20,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:20,386 INFO L225 Difference]: With dead ends: 71 [2024-11-24 00:55:20,387 INFO L226 Difference]: Without dead ends: 65 [2024-11-24 00:55:20,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:55:20,387 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:20,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 84 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:55:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-24 00:55:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-24 00:55:20,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 53 states have (on average 1.1132075471698113) internal successors, (59), 53 states have internal predecessors, (59), 6 states have call successors, (6), 6 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-24 00:55:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2024-11-24 00:55:20,410 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 53 [2024-11-24 00:55:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:20,410 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2024-11-24 00:55:20,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-24 00:55:20,411 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2024-11-24 00:55:20,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:55:20,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:20,412 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:20,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:20,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:20,613 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:20,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:20,614 INFO L85 PathProgramCache]: Analyzing trace with hash 912181001, now seen corresponding path program 3 times [2024-11-24 00:55:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682121909] [2024-11-24 00:55:20,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:55:20,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:20,711 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-24 00:55:20,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unknown [2024-11-24 00:55:20,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771678407] [2024-11-24 00:55:20,717 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:55:20,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:20,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:20,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:20,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:55:20,799 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-24 00:55:20,799 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:55:20,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 00:55:20,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:55:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-24 00:55:21,321 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:55:22,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:55:22,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682121909] [2024-11-24 00:55:22,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:55:22,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771678407] [2024-11-24 00:55:22,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771678407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:55:22,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:55:22,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-11-24 00:55:22,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992661589] [2024-11-24 00:55:22,051 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-24 00:55:22,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:55:22,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:55:22,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:55:22,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:55:22,056 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:55:22,641 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2024-11-24 00:55:22,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:55:22,642 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2024-11-24 00:55:22,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:55:22,646 INFO L225 Difference]: With dead ends: 118 [2024-11-24 00:55:22,646 INFO L226 Difference]: Without dead ends: 112 [2024-11-24 00:55:22,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:55:22,649 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:55:22,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 85 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:55:22,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-24 00:55:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 109. [2024-11-24 00:55:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 89 states have (on average 1.1123595505617978) internal successors, (99), 89 states have internal predecessors, (99), 10 states have call successors, (10), 10 states have call predecessors, (10), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 00:55:22,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 118 transitions. [2024-11-24 00:55:22,695 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 118 transitions. Word has length 64 [2024-11-24 00:55:22,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:55:22,697 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 118 transitions. [2024-11-24 00:55:22,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-24 00:55:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 118 transitions. [2024-11-24 00:55:22,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-24 00:55:22,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:55:22,699 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:22,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:55:22,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:22,900 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:55:22,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:55:22,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1592239371, now seen corresponding path program 1 times [2024-11-24 00:55:22,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:55:22,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971452884] [2024-11-24 00:55:22,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:55:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:55:22,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1915046556] [2024-11-24 00:55:22,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:55:22,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:22,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:55:22,940 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:55:22,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:55:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:55:23,018 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:55:23,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:55:23,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:55:23,101 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:55:23,102 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-24 00:55:23,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:55:23,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:55:23,314 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:55:23,361 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:55:23,365 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:55:23 BoogieIcfgContainer [2024-11-24 00:55:23,365 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:55:23,365 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:55:23,366 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:55:23,366 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:55:23,367 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:55:11" (3/4) ... [2024-11-24 00:55:23,368 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 00:55:23,469 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 34. [2024-11-24 00:55:23,586 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:55:23,587 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:55:23,587 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:55:23,588 INFO L158 Benchmark]: Toolchain (without parser) took 12452.29ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 46.7MB in the end (delta: 45.9MB). Peak memory consumption was 46.6MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,592 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 74.1MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:55:23,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.55ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.3MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,592 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.09ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:55:23,593 INFO L158 Benchmark]: Boogie Preprocessor took 49.53ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,593 INFO L158 Benchmark]: RCFGBuilder took 307.43ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.6MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,593 INFO L158 Benchmark]: TraceAbstraction took 11612.59ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 53.6MB in the end (delta: 14.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,594 INFO L158 Benchmark]: Witness Printer took 221.70ms. Allocated memory is still 117.4MB. Free memory was 53.6MB in the beginning and 46.7MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:55:23,596 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory was 74.3MB in the beginning and 74.1MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 209.55ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 81.3MB in the end (delta: 11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.09ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.53ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 79.0MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 307.43ms. Allocated memory is still 117.4MB. Free memory was 79.0MB in the beginning and 68.6MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11612.59ms. Allocated memory is still 117.4MB. Free memory was 68.0MB in the beginning and 53.6MB in the end (delta: 14.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. * Witness Printer took 221.70ms. Allocated memory is still 117.4MB. Free memory was 53.6MB in the beginning and 46.7MB in the end (delta: 6.9MB). 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: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [X=18, Y=2, counter=0, v=-14, x=0, y=0] [L31] EXPR counter++ VAL [X=18, Y=2, counter=1, v=-14, x=0, y=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=18, Y=2, counter=1, v=-14, x=0, xy=0, y=0, yx=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=18, Y=2, counter=1, v=-14, x=0, xy=0, y=0, yx=0] [L35] COND FALSE !(!(x <= X)) VAL [X=18, Y=2, counter=1, v=-14, x=0, xy=0, y=0, yx=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=18, Y=2, counter=1, v=-10, x=0, xy=0, y=0, yx=0] [L45] x++ VAL [X=18, Y=2, counter=1, v=-10, x=1, xy=0, y=0, yx=0] [L31] EXPR counter++ VAL [X=18, Y=2, counter=2, v=-10, x=1, xy=0, y=0, yx=0] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=18, Y=2, counter=2, v=-10, x=1, xy=0, y=0, yx=2] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=18, Y=2, counter=2, v=-10, x=1, xy=0, y=0, yx=2] [L35] COND FALSE !(!(x <= X)) VAL [X=18, Y=2, counter=2, v=-10, x=1, xy=0, y=0, yx=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=18, Y=2, counter=2, v=-6, x=1, xy=0, y=0, yx=2] [L45] x++ VAL [X=18, Y=2, counter=2, v=-6, x=2, xy=0, y=0, yx=2] [L31] EXPR counter++ VAL [X=18, Y=2, counter=3, v=-6, x=2, xy=0, y=0, yx=2] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=18, Y=2, counter=3, v=-6, x=2, xy=0, y=0, yx=4] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=18, Y=2, counter=3, v=-6, x=2, xy=0, y=0, yx=4] [L35] COND FALSE !(!(x <= X)) VAL [X=18, Y=2, counter=3, v=-6, x=2, xy=0, y=0, yx=4] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=18, Y=2, counter=3, v=-2, x=2, xy=0, y=0, yx=4] [L45] x++ VAL [X=18, Y=2, counter=3, v=-2, x=3, xy=0, y=0, yx=4] [L31] EXPR counter++ VAL [X=18, Y=2, counter=4, v=-2, x=3, xy=0, y=0, yx=4] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=18, Y=2, counter=4, v=-2, x=3, xy=0, y=0, yx=6] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=18, Y=2, counter=4, v=-2, x=3, xy=0, y=0, yx=6] [L35] COND FALSE !(!(x <= X)) VAL [X=18, Y=2, counter=4, v=-2, x=3, xy=0, y=0, yx=6] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=18, Y=2, counter=4, v=2, x=3, xy=0, y=0, yx=6] [L45] x++ VAL [X=18, Y=2, counter=4, v=2, x=4, xy=0, y=0, yx=6] [L31] EXPR counter++ VAL [X=18, Y=2, counter=5, v=2, x=4, xy=0, y=0, yx=6] [L31] COND TRUE counter++<5 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=18, Y=2, counter=5, v=2, x=4, xy=0, y=0, yx=8] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=18, Y=2, counter=5, v=2, x=4, xy=0, y=0, yx=8] [L35] COND FALSE !(!(x <= X)) VAL [X=18, Y=2, counter=5, v=2, x=4, xy=0, y=0, yx=8] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [X=18, Y=2, counter=5, v=-30, x=4, xy=0, y=1, yx=8] [L45] x++ VAL [X=18, Y=2, counter=5, v=-30, x=5, xy=0, y=1, yx=8] [L31] EXPR counter++ VAL [X=18, Y=2, counter=6, v=-30, x=5, xy=0, y=1, yx=8] [L31] COND FALSE !(counter++<5) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [X=18, Y=2, counter=6, v=-30, xy=5, y=1, yx=10] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=6] [L14] COND TRUE !(cond) VAL [\old(cond)=0, counter=6] [L16] reach_error() VAL [\old(cond)=0, counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.5s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 142 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 140 mSDsluCounter, 771 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 623 mSDsCounter, 55 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 746 IncrementalHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 55 mSolverCounterUnsat, 148 mSDtfsCounter, 746 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 447 GetRequests, 313 SyntacticMatches, 15 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=10, InterpolantAutomatonStates: 107, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 60 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 617 NumberOfCodeBlocks, 573 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 456 ConstructedInterpolants, 2 QuantifiedInterpolants, 2028 SizeOfPredicates, 27 NumberOfNonLiveVariables, 668 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 17 InterpolantComputations, 4 PerfectInterpolantSequences, 257/454 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! [2024-11-24 00:55:23,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b79b841-502d-47d7-8445-e446ff3baba3/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE