./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd --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 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:31:54,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:31:54,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:31:54,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:31:54,986 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:31:55,029 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:31:55,030 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:31:55,030 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:31:55,031 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:31:55,031 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:31:55,034 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:31:55,034 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:31:55,035 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:31:55,035 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:31:55,035 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:31:55,037 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:31:55,037 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:31:55,038 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:31:55,039 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:31:55,039 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:31:55,040 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:31:55,040 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:31:55,040 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_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd 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 -> 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a [2024-11-13 13:31:55,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:31:55,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:31:55,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:31:55,428 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:31:55,429 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:31:55,432 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c Unable to find full path for "g++" [2024-11-13 13:31:57,370 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:31:57,666 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:31:57,669 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2024-11-13 13:31:57,696 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/data/639ed83c4/cfd37ac62ec4418d81bc784f364d415a/FLAG7d0141f80 [2024-11-13 13:31:57,721 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/data/639ed83c4/cfd37ac62ec4418d81bc784f364d415a [2024-11-13 13:31:57,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:31:57,728 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:31:57,730 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:31:57,730 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:31:57,736 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:31:57,737 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:57,738 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dae867b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57, skipping insertion in model container [2024-11-13 13:31:57,739 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:57,756 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:31:57,910 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_046efed8-70f3-4d38-8e47-14b462210ad3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2024-11-13 13:31:57,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:31:57,944 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:31:57,957 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_046efed8-70f3-4d38-8e47-14b462210ad3/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2024-11-13 13:31:57,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:31:57,979 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:31:57,979 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57 WrapperNode [2024-11-13 13:31:57,979 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:31:57,980 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:31:57,980 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:31:57,981 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:31:57,988 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:57,993 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,011 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-13 13:31:58,011 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:31:58,012 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:31:58,012 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:31:58,012 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:31:58,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,023 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,039 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]. [2024-11-13 13:31:58,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,045 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,050 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,054 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,055 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,058 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:31:58,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:31:58,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:31:58,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:31:58,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (1/1) ... [2024-11-13 13:31:58,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:31:58,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:58,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:31:58,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:31:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:31:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:31:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:31:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:31:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:31:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:31:58,193 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:31:58,197 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:31:58,389 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-13 13:31:58,390 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:31:58,404 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:31:58,404 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:31:58,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:58 BoogieIcfgContainer [2024-11-13 13:31:58,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:31:58,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:31:58,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:31:58,415 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:31:58,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:31:57" (1/3) ... [2024-11-13 13:31:58,416 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e6f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:58, skipping insertion in model container [2024-11-13 13:31:58,416 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:31:57" (2/3) ... [2024-11-13 13:31:58,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7e6f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:31:58, skipping insertion in model container [2024-11-13 13:31:58,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:58" (3/3) ... [2024-11-13 13:31:58,419 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c [2024-11-13 13:31:58,437 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:31:58,440 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG bresenham-ll_unwindbound20.c that has 2 procedures, 20 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:31:58,518 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:31:58,536 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;@61127bed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:31:58,537 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:31:58,543 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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) [2024-11-13 13:31:58,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 13:31:58,553 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:58,554 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:58,555 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:58,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash 150860991, now seen corresponding path program 1 times [2024-11-13 13:31:58,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:58,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444243261] [2024-11-13 13:31:58,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:58,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:31:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721611992] [2024-11-13 13:31:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:58,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:58,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:58,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:58,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:31:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:58,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:31:58,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:31:59,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:59,041 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:31:59,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:59,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444243261] [2024-11-13 13:31:59,046 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:31:59,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721611992] [2024-11-13 13:31:59,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721611992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:59,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:59,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:31:59,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969694301] [2024-11-13 13:31:59,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:59,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:31:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:59,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:31:59,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:31:59,079 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 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 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2024-11-13 13:31:59,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:59,270 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2024-11-13 13:31:59,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:31:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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 [2024-11-13 13:31:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:59,280 INFO L225 Difference]: With dead ends: 52 [2024-11-13 13:31:59,280 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 13:31:59,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:31:59,287 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 10 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:31:59,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 64 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:31:59,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 13:31:59,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2024-11-13 13:31:59,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-11-13 13:31:59,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 13:31:59,355 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2024-11-13 13:31:59,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:59,355 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 13:31:59,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 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) [2024-11-13 13:31:59,356 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 13:31:59,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 13:31:59,358 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:59,358 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:59,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:31:59,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-13 13:31:59,560 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:59,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:59,561 INFO L85 PathProgramCache]: Analyzing trace with hash 309149643, now seen corresponding path program 1 times [2024-11-13 13:31:59,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:59,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931722152] [2024-11-13 13:31:59,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:59,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:59,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:31:59,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:31:59,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931722152] [2024-11-13 13:31:59,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931722152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:31:59,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:31:59,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:31:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029727934] [2024-11-13 13:31:59,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:31:59,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:31:59,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:31:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:31:59,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:31:59,741 INFO L87 Difference]: Start difference. First operand 23 states and 27 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) [2024-11-13 13:31:59,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:31:59,768 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2024-11-13 13:31:59,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:31:59,770 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 [2024-11-13 13:31:59,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:31:59,775 INFO L225 Difference]: With dead ends: 31 [2024-11-13 13:31:59,775 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 13:31:59,775 INFO L431 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 [2024-11-13 13:31:59,776 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 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 [2024-11-13 13:31:59,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:31:59,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 13:31:59,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 13:31:59,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 19 states have internal predecessors, (21), 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) [2024-11-13 13:31:59,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-13 13:31:59,784 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2024-11-13 13:31:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:31:59,785 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-13 13:31:59,785 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) [2024-11-13 13:31:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-13 13:31:59,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 13:31:59,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:31:59,786 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:31:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:31:59,786 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:31:59,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:31:59,788 INFO L85 PathProgramCache]: Analyzing trace with hash -109323119, now seen corresponding path program 1 times [2024-11-13 13:31:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:31:59,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736383339] [2024-11-13 13:31:59,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:59,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:31:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:31:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198892656] [2024-11-13 13:31:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:31:59,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:31:59,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:31:59,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:31:59,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:31:59,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:31:59,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 13:31:59,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:00,103 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:00,106 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:32:00,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736383339] [2024-11-13 13:32:00,106 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:32:00,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198892656] [2024-11-13 13:32:00,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198892656] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:32:00,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:32:00,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 13:32:00,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099196175] [2024-11-13 13:32:00,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:32:00,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:32:00,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:32:00,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:32:00,112 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-13 13:32:00,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:00,228 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2024-11-13 13:32:00,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:32:00,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2024-11-13 13:32:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:00,231 INFO L225 Difference]: With dead ends: 33 [2024-11-13 13:32:00,231 INFO L226 Difference]: Without dead ends: 25 [2024-11-13 13:32:00,231 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:32:00,232 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 47 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 [2024-11-13 13:32:00,233 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 47 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:00,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-13 13:32:00,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-13 13:32:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 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) [2024-11-13 13:32:00,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-13 13:32:00,238 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2024-11-13 13:32:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:00,238 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-13 13:32:00,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-11-13 13:32:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-13 13:32:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-13 13:32:00,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:00,239 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:00,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 13:32:00,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:00,440 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:00,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:00,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1400513534, now seen corresponding path program 1 times [2024-11-13 13:32:00,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:00,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032151394] [2024-11-13 13:32:00,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:00,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:32:00,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732268615] [2024-11-13 13:32:00,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:00,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:00,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:00,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:00,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:32:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:00,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 13:32:00,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:00,755 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:00,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:00,983 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 13:32:00,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:00,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032151394] [2024-11-13 13:32:00,984 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:32:00,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732268615] [2024-11-13 13:32:00,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732268615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:00,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:32:00,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2024-11-13 13:32:00,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373311178] [2024-11-13 13:32:00,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:00,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:32:00,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:00,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:32:00,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:32:00,988 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-13 13:32:01,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:01,331 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2024-11-13 13:32:01,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:32:01,332 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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 18 [2024-11-13 13:32:01,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:01,333 INFO L225 Difference]: With dead ends: 41 [2024-11-13 13:32:01,333 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 13:32:01,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:32:01,334 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 16 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:01,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 85 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:32:01,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 13:32:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2024-11-13 13:32:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 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) [2024-11-13 13:32:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2024-11-13 13:32:01,345 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2024-11-13 13:32:01,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:01,345 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2024-11-13 13:32:01,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 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) [2024-11-13 13:32:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2024-11-13 13:32:01,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 13:32:01,346 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:01,347 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:01,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:32:01,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:01,551 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:01,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:01,551 INFO L85 PathProgramCache]: Analyzing trace with hash -538820376, now seen corresponding path program 1 times [2024-11-13 13:32:01,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:01,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405558706] [2024-11-13 13:32:01,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:01,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:01,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:01,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:01,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405558706] [2024-11-13 13:32:01,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405558706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:01,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785594657] [2024-11-13 13:32:01,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:01,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:01,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:01,773 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:01,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:32:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:01,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:32:01,841 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:01,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:01,890 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:01,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785594657] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:01,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2024-11-13 13:32:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100246880] [2024-11-13 13:32:01,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:01,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:32:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:01,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:32:01,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:32:01,956 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-13 13:32:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:02,075 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2024-11-13 13:32:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:32:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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 19 [2024-11-13 13:32:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:02,076 INFO L225 Difference]: With dead ends: 68 [2024-11-13 13:32:02,076 INFO L226 Difference]: Without dead ends: 62 [2024-11-13 13:32:02,077 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:32:02,078 INFO L432 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:02,078 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 78 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:02,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-13 13:32:02,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2024-11-13 13:32:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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) [2024-11-13 13:32:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-13 13:32:02,097 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 19 [2024-11-13 13:32:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:02,098 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-13 13:32:02,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 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) [2024-11-13 13:32:02,098 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-13 13:32:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:32:02,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:02,099 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:02,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:32:02,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:02,300 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:02,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:02,301 INFO L85 PathProgramCache]: Analyzing trace with hash -8334354, now seen corresponding path program 1 times [2024-11-13 13:32:02,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:02,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789530844] [2024-11-13 13:32:02,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:02,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:32:02,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989392537] [2024-11-13 13:32:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:02,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:02,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:32:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:02,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:32:02,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:02,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:32:02,704 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:02,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:32:02,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:02,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789530844] [2024-11-13 13:32:02,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:32:02,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989392537] [2024-11-13 13:32:02,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989392537] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:02,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:32:02,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2024-11-13 13:32:02,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797678702] [2024-11-13 13:32:02,938 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:02,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:32:02,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:02,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:32:02,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:32:02,941 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 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) [2024-11-13 13:32:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:03,311 INFO L93 Difference]: Finished difference Result 79 states and 95 transitions. [2024-11-13 13:32:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:32:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 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 25 [2024-11-13 13:32:03,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:03,313 INFO L225 Difference]: With dead ends: 79 [2024-11-13 13:32:03,313 INFO L226 Difference]: Without dead ends: 73 [2024-11-13 13:32:03,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:32:03,314 INFO L432 NwaCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:03,315 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 85 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 13:32:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-13 13:32:03,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2024-11-13 13:32:03,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 58 states have (on average 1.206896551724138) internal successors, (70), 58 states have internal predecessors, (70), 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) [2024-11-13 13:32:03,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2024-11-13 13:32:03,344 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 25 [2024-11-13 13:32:03,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:03,345 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2024-11-13 13:32:03,345 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 13 states have internal predecessors, (24), 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) [2024-11-13 13:32:03,345 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2024-11-13 13:32:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 13:32:03,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:03,347 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:03,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:32:03,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:03,548 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:03,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:03,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1288198032, now seen corresponding path program 1 times [2024-11-13 13:32:03,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:03,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366629909] [2024-11-13 13:32:03,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:03,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:32:03,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872521390] [2024-11-13 13:32:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:03,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:03,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:03,575 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:03,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:32:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:03,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 13:32:03,647 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:04,246 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:32:04,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:13,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:32:13,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:13,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366629909] [2024-11-13 13:32:13,509 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:32:13,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872521390] [2024-11-13 13:32:13,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872521390] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:13,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:32:13,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2024-11-13 13:32:13,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305852097] [2024-11-13 13:32:13,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:13,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:32:13,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:13,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:32:13,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:32:13,511 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 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) [2024-11-13 13:32:19,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:19,225 INFO L93 Difference]: Finished difference Result 86 states and 101 transitions. [2024-11-13 13:32:19,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 13:32:19,227 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 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 25 [2024-11-13 13:32:19,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:19,228 INFO L225 Difference]: With dead ends: 86 [2024-11-13 13:32:19,228 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 13:32:19,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 13:32:19,230 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:19,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 118 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 13:32:19,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 13:32:19,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2024-11-13 13:32:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 62 states have internal predecessors, (73), 9 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:32:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2024-11-13 13:32:19,252 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 25 [2024-11-13 13:32:19,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:19,252 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2024-11-13 13:32:19,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 20 states have internal predecessors, (32), 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) [2024-11-13 13:32:19,253 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2024-11-13 13:32:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-13 13:32:19,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:19,258 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:19,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:32:19,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:19,461 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:19,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:19,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1010249843, now seen corresponding path program 1 times [2024-11-13 13:32:19,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:19,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783481341] [2024-11-13 13:32:19,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:19,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:32:19,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783481341] [2024-11-13 13:32:19,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783481341] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:19,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170928345] [2024-11-13 13:32:19,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:19,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:19,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:19,788 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:19,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:32:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:19,848 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:32:19,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:20,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:32:20,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:32:20,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170928345] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:20,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:20,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-13 13:32:20,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709782945] [2024-11-13 13:32:20,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:20,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:32:20,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:20,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:32:20,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:32:20,170 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:32:20,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:20,389 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2024-11-13 13:32:20,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:32:20,390 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 35 [2024-11-13 13:32:20,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:20,390 INFO L225 Difference]: With dead ends: 88 [2024-11-13 13:32:20,390 INFO L226 Difference]: Without dead ends: 82 [2024-11-13 13:32:20,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2024-11-13 13:32:20,392 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:20,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:20,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-13 13:32:20,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-13 13:32:20,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 67 states have (on average 1.164179104477612) internal successors, (78), 67 states have internal predecessors, (78), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:32:20,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 97 transitions. [2024-11-13 13:32:20,414 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 97 transitions. Word has length 35 [2024-11-13 13:32:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:20,414 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 97 transitions. [2024-11-13 13:32:20,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 15 states have internal predecessors, (46), 9 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 13:32:20,414 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 97 transitions. [2024-11-13 13:32:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:32:20,415 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:20,416 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:20,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:32:20,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 13:32:20,616 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:20,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash -935496086, now seen corresponding path program 2 times [2024-11-13 13:32:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45651991] [2024-11-13 13:32:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,871 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,896 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:32:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:20,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45651991] [2024-11-13 13:32:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45651991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598819888] [2024-11-13 13:32:20,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:32:20,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:20,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:20,909 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:20,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:32:20,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:32:20,976 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:32:20,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:32:20,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:21,195 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:21,195 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:21,458 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 30 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:21,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598819888] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:21,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:21,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2024-11-13 13:32:21,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56980031] [2024-11-13 13:32:21,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:21,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 13:32:21,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:21,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 13:32:21,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2024-11-13 13:32:21,464 INFO L87 Difference]: Start difference. First operand 82 states and 97 transitions. Second operand has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 13:32:21,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:21,925 INFO L93 Difference]: Finished difference Result 110 states and 136 transitions. [2024-11-13 13:32:21,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 13:32:21,926 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Word has length 45 [2024-11-13 13:32:21,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:21,927 INFO L225 Difference]: With dead ends: 110 [2024-11-13 13:32:21,927 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 13:32:21,928 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=204, Invalid=788, Unknown=0, NotChecked=0, Total=992 [2024-11-13 13:32:21,929 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:21,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 172 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 13:32:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 13:32:21,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 100. [2024-11-13 13:32:21,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 82 states have internal predecessors, (98), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 13:32:21,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 123 transitions. [2024-11-13 13:32:21,960 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 123 transitions. Word has length 45 [2024-11-13 13:32:21,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:21,962 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 123 transitions. [2024-11-13 13:32:21,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.9047619047619047) internal successors, (61), 21 states have internal predecessors, (61), 12 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-13 13:32:21,963 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 123 transitions. [2024-11-13 13:32:21,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 13:32:21,966 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:21,967 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:21,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 13:32:22,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:22,167 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:22,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:22,168 INFO L85 PathProgramCache]: Analyzing trace with hash -499637910, now seen corresponding path program 3 times [2024-11-13 13:32:22,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:22,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332488822] [2024-11-13 13:32:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:22,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:22,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,316 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:32:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:22,334 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:22,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332488822] [2024-11-13 13:32:22,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332488822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:22,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586052072] [2024-11-13 13:32:22,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:32:22,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:22,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:22,338 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:22,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:32:22,439 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:32:22,439 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:32:22,440 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:32:22,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:22,721 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 13:32:22,721 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-13 13:32:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586052072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:23,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 12, 12] total 23 [2024-11-13 13:32:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972775052] [2024-11-13 13:32:23,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:23,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:32:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:32:23,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:32:23,832 INFO L87 Difference]: Start difference. First operand 100 states and 123 transitions. Second operand has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 13:32:25,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:25,775 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2024-11-13 13:32:25,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:32:25,775 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Word has length 45 [2024-11-13 13:32:25,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:25,776 INFO L225 Difference]: With dead ends: 134 [2024-11-13 13:32:25,776 INFO L226 Difference]: Without dead ends: 111 [2024-11-13 13:32:25,777 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=265, Invalid=1295, Unknown=0, NotChecked=0, Total=1560 [2024-11-13 13:32:25,778 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 16 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:25,778 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 194 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 13:32:25,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-13 13:32:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 62. [2024-11-13 13:32:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 50 states have (on average 1.12) internal successors, (56), 50 states have internal predecessors, (56), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:32:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2024-11-13 13:32:25,799 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 45 [2024-11-13 13:32:25,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:25,800 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2024-11-13 13:32:25,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 20 states have internal predecessors, (56), 9 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-13 13:32:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2024-11-13 13:32:25,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 13:32:25,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:25,802 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:25,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:32:26,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:26,006 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:26,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:26,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1120699071, now seen corresponding path program 2 times [2024-11-13 13:32:26,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129275061] [2024-11-13 13:32:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:32:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:26,227 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:26,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:26,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129275061] [2024-11-13 13:32:26,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129275061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:26,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719979941] [2024-11-13 13:32:26,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:32:26,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:26,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:26,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:26,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:32:26,293 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:32:26,293 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:32:26,295 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:32:26,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:26,359 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:26,359 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:32:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1719979941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:26,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 14 [2024-11-13 13:32:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105584783] [2024-11-13 13:32:26,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:26,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 13:32:26,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 13:32:26,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:32:26,483 INFO L87 Difference]: Start difference. First operand 62 states and 69 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-13 13:32:26,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:26,677 INFO L93 Difference]: Finished difference Result 128 states and 146 transitions. [2024-11-13 13:32:26,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 13:32:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) Word has length 49 [2024-11-13 13:32:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:26,679 INFO L225 Difference]: With dead ends: 128 [2024-11-13 13:32:26,679 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 13:32:26,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2024-11-13 13:32:26,680 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:26,681 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 131 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:26,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 13:32:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-13 13:32:26,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.1224489795918366) internal successors, (110), 98 states have internal predecessors, (110), 13 states have call successors, (13), 11 states have call predecessors, (13), 10 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 13:32:26,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2024-11-13 13:32:26,709 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 49 [2024-11-13 13:32:26,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:26,710 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2024-11-13 13:32:26,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2024-11-13 13:32:26,710 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2024-11-13 13:32:26,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-13 13:32:26,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:26,713 INFO L215 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:26,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-13 13:32:26,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:26,914 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:26,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:26,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1761853357, now seen corresponding path program 3 times [2024-11-13 13:32:26,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:26,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556525536] [2024-11-13 13:32:26,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:26,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:32:27,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,463 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 13:32:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-13 13:32:27,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,475 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 13:32:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-13 13:32:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 13:32:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-13 13:32:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:27,501 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2024-11-13 13:32:27,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556525536] [2024-11-13 13:32:27,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556525536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:27,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843537754] [2024-11-13 13:32:27,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:32:27,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:27,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:27,505 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:27,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 13:32:27,579 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:32:27,579 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:32:27,581 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-13 13:32:27,584 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:28,000 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 102 proven. 1 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-11-13 13:32:28,000 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:28,451 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 46 proven. 57 refuted. 0 times theorem prover too weak. 387 trivial. 0 not checked. [2024-11-13 13:32:28,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843537754] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:28,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:28,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 12] total 29 [2024-11-13 13:32:28,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272097071] [2024-11-13 13:32:28,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:28,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 13:32:28,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 13:32:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2024-11-13 13:32:28,454 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 29 states, 25 states have (on average 3.56) internal successors, (89), 28 states have internal predecessors, (89), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:32:31,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:31,344 INFO L93 Difference]: Finished difference Result 239 states and 263 transitions. [2024-11-13 13:32:31,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2024-11-13 13:32:31,345 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 3.56) internal successors, (89), 28 states have internal predecessors, (89), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Word has length 109 [2024-11-13 13:32:31,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:31,347 INFO L225 Difference]: With dead ends: 239 [2024-11-13 13:32:31,347 INFO L226 Difference]: Without dead ends: 229 [2024-11-13 13:32:31,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 219 SyntacticMatches, 3 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1964, Invalid=12556, Unknown=0, NotChecked=0, Total=14520 [2024-11-13 13:32:31,351 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 258 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:31,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 100 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 13:32:31,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-13 13:32:31,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 226. [2024-11-13 13:32:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 181 states have (on average 1.1215469613259668) internal successors, (203), 181 states have internal predecessors, (203), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-13 13:32:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 248 transitions. [2024-11-13 13:32:31,398 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 248 transitions. Word has length 109 [2024-11-13 13:32:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:31,398 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 248 transitions. [2024-11-13 13:32:31,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 3.56) internal successors, (89), 28 states have internal predecessors, (89), 16 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-13 13:32:31,398 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 248 transitions. [2024-11-13 13:32:31,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-13 13:32:31,401 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:31,401 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:31,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 13:32:31,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:31,606 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:31,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:31,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2112574388, now seen corresponding path program 1 times [2024-11-13 13:32:31,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:31,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160821868] [2024-11-13 13:32:31,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:31,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 13:32:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 13:32:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,158 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 13:32:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:32:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2024-11-13 13:32:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-13 13:32:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 13:32:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-13 13:32:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2024-11-13 13:32:32,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2024-11-13 13:32:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2024-11-13 13:32:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,208 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 22 proven. 352 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 13:32:32,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160821868] [2024-11-13 13:32:32,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160821868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:32:32,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682780088] [2024-11-13 13:32:32,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:32,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:32,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:32,212 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:32,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 13:32:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:32:32,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 13:32:32,333 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:32:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 22 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:32:32,511 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:32:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 594 backedges. 22 proven. 352 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-13 13:32:32,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682780088] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:32,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:32:32,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 15] total 24 [2024-11-13 13:32:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554125381] [2024-11-13 13:32:32,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:32,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 13:32:32,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:32,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 13:32:32,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2024-11-13 13:32:32,874 INFO L87 Difference]: Start difference. First operand 226 states and 248 transitions. Second operand has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 20 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-13 13:32:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:32:33,337 INFO L93 Difference]: Finished difference Result 415 states and 463 transitions. [2024-11-13 13:32:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-13 13:32:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 20 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) Word has length 119 [2024-11-13 13:32:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:32:33,341 INFO L225 Difference]: With dead ends: 415 [2024-11-13 13:32:33,341 INFO L226 Difference]: Without dead ends: 409 [2024-11-13 13:32:33,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 246 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=1140, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 13:32:33,343 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 83 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:32:33,343 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 187 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:32:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-13 13:32:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 406. [2024-11-13 13:32:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 325 states have (on average 1.123076923076923) internal successors, (365), 325 states have internal predecessors, (365), 41 states have call successors, (41), 40 states have call predecessors, (41), 39 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-13 13:32:33,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 446 transitions. [2024-11-13 13:32:33,422 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 446 transitions. Word has length 119 [2024-11-13 13:32:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:32:33,423 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 446 transitions. [2024-11-13 13:32:33,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 20 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (30), 19 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-13 13:32:33,423 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 446 transitions. [2024-11-13 13:32:33,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2024-11-13 13:32:33,426 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:32:33,427 INFO L215 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:33,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 13:32:33,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:32:33,627 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:32:33,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:32:33,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1536181393, now seen corresponding path program 2 times [2024-11-13 13:32:33,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:32:33,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371108701] [2024-11-13 13:32:33,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:32:33,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:32:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:32:33,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578132422] [2024-11-13 13:32:33,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:32:33,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:33,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:32:33,766 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:32:33,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 13:32:33,927 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:32:33,927 INFO L228 tOrderPrioritization]: Conjunction of SSA is sat [2024-11-13 13:32:33,927 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:32:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:32:34,082 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:32:34,082 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:32:34,083 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 13:32:34,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 13:32:34,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:32:34,288 INFO L407 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:32:34,399 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:32:34,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:32:34 BoogieIcfgContainer [2024-11-13 13:32:34,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:32:34,405 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:32:34,406 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:32:34,406 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:32:34,407 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:31:58" (3/4) ... [2024-11-13 13:32:34,408 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 13:32:34,528 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:32:34,528 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:32:34,529 INFO L158 Benchmark]: Toolchain (without parser) took 36801.40ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 94.6MB in the beginning and 139.3MB in the end (delta: -44.7MB). Peak memory consumption was 184.2MB. Max. memory is 16.1GB. [2024-11-13 13:32:34,530 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:32:34,530 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.86ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 83.4MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:32:34,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.30ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 82.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:32:34,532 INFO L158 Benchmark]: Boogie Preprocessor took 49.06ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:32:34,532 INFO L158 Benchmark]: RCFGBuilder took 343.11ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 70.7MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:32:34,533 INFO L158 Benchmark]: TraceAbstraction took 35997.14ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 70.0MB in the beginning and 151.8MB in the end (delta: -81.8MB). Peak memory consumption was 150.7MB. Max. memory is 16.1GB. [2024-11-13 13:32:34,533 INFO L158 Benchmark]: Witness Printer took 123.03ms. Allocated memory is still 352.3MB. Free memory was 151.8MB in the beginning and 139.3MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:32:34,536 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 167.8MB. Free memory is still 104.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.86ms. Allocated memory is still 117.4MB. Free memory was 94.6MB in the beginning and 83.4MB in the end (delta: 11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.30ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 82.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.06ms. Allocated memory is still 117.4MB. Free memory was 82.3MB in the beginning and 80.9MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.11ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 70.7MB in the end (delta: 10.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 35997.14ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 70.0MB in the beginning and 151.8MB in the end (delta: -81.8MB). Peak memory consumption was 150.7MB. Max. memory is 16.1GB. * Witness Printer took 123.03ms. Allocated memory is still 352.3MB. Free memory was 151.8MB in the beginning and 139.3MB in the end (delta: 12.5MB). 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=80, Y=2, counter=0, v=-76, x=0, y=0] [L31] EXPR counter++ VAL [X=80, Y=2, counter=1, v=-76, x=0, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=1, v=-76, 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=80, Y=2, counter=1, v=-76, x=0, xy=0, y=0, yx=0] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=1, v=-76, x=0, xy=0, y=0, yx=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=1, v=-72, x=0, xy=0, y=0, yx=0] [L45] x++ VAL [X=80, Y=2, counter=1, v=-72, x=1, xy=0, y=0, yx=0] [L31] EXPR counter++ VAL [X=80, Y=2, counter=2, v=-72, x=1, xy=0, y=0, yx=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=2, v=-72, 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=80, Y=2, counter=2, v=-72, x=1, xy=0, y=0, yx=2] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=2, v=-72, x=1, xy=0, y=0, yx=2] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=2, v=-68, x=1, xy=0, y=0, yx=2] [L45] x++ VAL [X=80, Y=2, counter=2, v=-68, x=2, xy=0, y=0, yx=2] [L31] EXPR counter++ VAL [X=80, Y=2, counter=3, v=-68, x=2, xy=0, y=0, yx=2] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=3, v=-68, 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=80, Y=2, counter=3, v=-68, x=2, xy=0, y=0, yx=4] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=3, v=-68, x=2, xy=0, y=0, yx=4] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=3, v=-64, x=2, xy=0, y=0, yx=4] [L45] x++ VAL [X=80, Y=2, counter=3, v=-64, x=3, xy=0, y=0, yx=4] [L31] EXPR counter++ VAL [X=80, Y=2, counter=4, v=-64, x=3, xy=0, y=0, yx=4] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=4, v=-64, 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=80, Y=2, counter=4, v=-64, x=3, xy=0, y=0, yx=6] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=4, v=-64, x=3, xy=0, y=0, yx=6] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=4, v=-60, x=3, xy=0, y=0, yx=6] [L45] x++ VAL [X=80, Y=2, counter=4, v=-60, x=4, xy=0, y=0, yx=6] [L31] EXPR counter++ VAL [X=80, Y=2, counter=5, v=-60, x=4, xy=0, y=0, yx=6] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=5, v=-60, 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=80, Y=2, counter=5, v=-60, x=4, xy=0, y=0, yx=8] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=5, v=-60, x=4, xy=0, y=0, yx=8] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=5, v=-56, x=4, xy=0, y=0, yx=8] [L45] x++ VAL [X=80, Y=2, counter=5, v=-56, x=5, xy=0, y=0, yx=8] [L31] EXPR counter++ VAL [X=80, Y=2, counter=6, v=-56, x=5, xy=0, y=0, yx=8] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=6, v=-56, x=5, xy=0, y=0, yx=10] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=6, v=-56, x=5, xy=0, y=0, yx=10] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=6, v=-56, x=5, xy=0, y=0, yx=10] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=6, v=-52, x=5, xy=0, y=0, yx=10] [L45] x++ VAL [X=80, Y=2, counter=6, v=-52, x=6, xy=0, y=0, yx=10] [L31] EXPR counter++ VAL [X=80, Y=2, counter=7, v=-52, x=6, xy=0, y=0, yx=10] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=7, v=-52, x=6, xy=0, y=0, yx=12] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=7, v=-52, x=6, xy=0, y=0, yx=12] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=7, v=-52, x=6, xy=0, y=0, yx=12] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=7, v=-48, x=6, xy=0, y=0, yx=12] [L45] x++ VAL [X=80, Y=2, counter=7, v=-48, x=7, xy=0, y=0, yx=12] [L31] EXPR counter++ VAL [X=80, Y=2, counter=8, v=-48, x=7, xy=0, y=0, yx=12] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=8, v=-48, x=7, xy=0, y=0, yx=14] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=8, v=-48, x=7, xy=0, y=0, yx=14] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=8, v=-48, x=7, xy=0, y=0, yx=14] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=8, v=-44, x=7, xy=0, y=0, yx=14] [L45] x++ VAL [X=80, Y=2, counter=8, v=-44, x=8, xy=0, y=0, yx=14] [L31] EXPR counter++ VAL [X=80, Y=2, counter=9, v=-44, x=8, xy=0, y=0, yx=14] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=9, v=-44, x=8, xy=0, y=0, yx=16] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=9, v=-44, x=8, xy=0, y=0, yx=16] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=9, v=-44, x=8, xy=0, y=0, yx=16] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=9, v=-40, x=8, xy=0, y=0, yx=16] [L45] x++ VAL [X=80, Y=2, counter=9, v=-40, x=9, xy=0, y=0, yx=16] [L31] EXPR counter++ VAL [X=80, Y=2, counter=10, v=-40, x=9, xy=0, y=0, yx=16] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=10, v=-40, x=9, xy=0, y=0, yx=18] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=10, v=-40, x=9, xy=0, y=0, yx=18] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=10, v=-40, x=9, xy=0, y=0, yx=18] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=10, v=-36, x=9, xy=0, y=0, yx=18] [L45] x++ VAL [X=80, Y=2, counter=10, v=-36, x=10, xy=0, y=0, yx=18] [L31] EXPR counter++ VAL [X=80, Y=2, counter=11, v=-36, x=10, xy=0, y=0, yx=18] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=11, v=-36, x=10, xy=0, y=0, yx=20] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=11] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=11] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=11, v=-36, x=10, xy=0, y=0, yx=20] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=11, v=-36, x=10, xy=0, y=0, yx=20] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=11, v=-32, x=10, xy=0, y=0, yx=20] [L45] x++ VAL [X=80, Y=2, counter=11, v=-32, x=11, xy=0, y=0, yx=20] [L31] EXPR counter++ VAL [X=80, Y=2, counter=12, v=-32, x=11, xy=0, y=0, yx=20] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=12, v=-32, x=11, xy=0, y=0, yx=22] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=12] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=12] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=12, v=-32, x=11, xy=0, y=0, yx=22] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=12, v=-32, x=11, xy=0, y=0, yx=22] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=12, v=-28, x=11, xy=0, y=0, yx=22] [L45] x++ VAL [X=80, Y=2, counter=12, v=-28, x=12, xy=0, y=0, yx=22] [L31] EXPR counter++ VAL [X=80, Y=2, counter=13, v=-28, x=12, xy=0, y=0, yx=22] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=13, v=-28, x=12, xy=0, y=0, yx=24] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=13] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=13] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=13, v=-28, x=12, xy=0, y=0, yx=24] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=13, v=-28, x=12, xy=0, y=0, yx=24] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=13, v=-24, x=12, xy=0, y=0, yx=24] [L45] x++ VAL [X=80, Y=2, counter=13, v=-24, x=13, xy=0, y=0, yx=24] [L31] EXPR counter++ VAL [X=80, Y=2, counter=14, v=-24, x=13, xy=0, y=0, yx=24] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=14, v=-24, x=13, xy=0, y=0, yx=26] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=14] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=14] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=14, v=-24, x=13, xy=0, y=0, yx=26] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=14, v=-24, x=13, xy=0, y=0, yx=26] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=14, v=-20, x=13, xy=0, y=0, yx=26] [L45] x++ VAL [X=80, Y=2, counter=14, v=-20, x=14, xy=0, y=0, yx=26] [L31] EXPR counter++ VAL [X=80, Y=2, counter=15, v=-20, x=14, xy=0, y=0, yx=26] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=15, v=-20, x=14, xy=0, y=0, yx=28] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=15] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=15] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=15, v=-20, x=14, xy=0, y=0, yx=28] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=15, v=-20, x=14, xy=0, y=0, yx=28] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=15, v=-16, x=14, xy=0, y=0, yx=28] [L45] x++ VAL [X=80, Y=2, counter=15, v=-16, x=15, xy=0, y=0, yx=28] [L31] EXPR counter++ VAL [X=80, Y=2, counter=16, v=-16, x=15, xy=0, y=0, yx=28] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=16, v=-16, x=15, xy=0, y=0, yx=30] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=16] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=16] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=16, v=-16, x=15, xy=0, y=0, yx=30] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=16, v=-16, x=15, xy=0, y=0, yx=30] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=16, v=-12, x=15, xy=0, y=0, yx=30] [L45] x++ VAL [X=80, Y=2, counter=16, v=-12, x=16, xy=0, y=0, yx=30] [L31] EXPR counter++ VAL [X=80, Y=2, counter=17, v=-12, x=16, xy=0, y=0, yx=30] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=17, v=-12, x=16, xy=0, y=0, yx=32] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=17] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=17] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=17, v=-12, x=16, xy=0, y=0, yx=32] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=17, v=-12, x=16, xy=0, y=0, yx=32] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=17, v=-8, x=16, xy=0, y=0, yx=32] [L45] x++ VAL [X=80, Y=2, counter=17, v=-8, x=17, xy=0, y=0, yx=32] [L31] EXPR counter++ VAL [X=80, Y=2, counter=18, v=-8, x=17, xy=0, y=0, yx=32] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=18, v=-8, x=17, xy=0, y=0, yx=34] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=18] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=18] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=18, v=-8, x=17, xy=0, y=0, yx=34] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=18, v=-8, x=17, xy=0, y=0, yx=34] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=18, v=-4, x=17, xy=0, y=0, yx=34] [L45] x++ VAL [X=80, Y=2, counter=18, v=-4, x=18, xy=0, y=0, yx=34] [L31] EXPR counter++ VAL [X=80, Y=2, counter=19, v=-4, x=18, xy=0, y=0, yx=34] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=19, v=-4, x=18, xy=0, y=0, yx=36] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=19] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=19] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=19, v=-4, x=18, xy=0, y=0, yx=36] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=19, v=-4, x=18, xy=0, y=0, yx=36] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [X=80, Y=2, counter=19, v=0, x=18, xy=0, y=0, yx=36] [L45] x++ VAL [X=80, Y=2, counter=19, v=0, x=19, xy=0, y=0, yx=36] [L31] EXPR counter++ VAL [X=80, Y=2, counter=20, v=0, x=19, xy=0, y=0, yx=36] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [X=80, Y=2, counter=20, v=0, x=19, xy=0, y=0, yx=38] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=20] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, counter=20] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [X=80, Y=2, counter=20, v=0, x=19, xy=0, y=0, yx=38] [L35] COND FALSE !(!(x <= X)) VAL [X=80, Y=2, counter=20, v=0, x=19, xy=0, y=0, yx=38] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [X=80, Y=2, counter=20, v=-156, x=19, xy=0, y=1, yx=38] [L45] x++ VAL [X=80, Y=2, counter=20, v=-156, x=20, xy=0, y=1, yx=38] [L31] EXPR counter++ VAL [X=80, Y=2, counter=21, v=-156, x=20, xy=0, y=1, yx=38] [L31] COND FALSE !(counter++<20) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [X=80, Y=2, counter=21, v=-156, xy=20, y=1, yx=40] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=21] [L14] COND TRUE !(cond) VAL [\old(cond)=0, counter=21] [L16] reach_error() VAL [\old(cond)=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.8s, OverallIterations: 14, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 528 SdHoareTripleChecker+Valid, 5.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 523 mSDsluCounter, 1425 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1231 mSDsCounter, 177 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1769 IncrementalHoareTripleChecker+Invalid, 1946 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 177 mSolverCounterUnsat, 194 mSDtfsCounter, 1769 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1291 GetRequests, 926 SyntacticMatches, 17 SemanticMatches, 348 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5933 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=406occurred in iteration=13, InterpolantAutomatonStates: 307, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 13 MinimizatonAttempts, 92 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 1451 NumberOfCodeBlocks, 1341 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1401 ConstructedInterpolants, 5 QuantifiedInterpolants, 5567 SizeOfPredicates, 50 NumberOfNonLiveVariables, 1328 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 30 InterpolantComputations, 3 PerfectInterpolantSequences, 2066/4020 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-13 13:32:34,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_046efed8-70f3-4d38-8e47-14b462210ad3/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE