./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.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_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/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_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/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_bf284bfe-49d4-4bb6-a0da-180104d47a93/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 b3d0d63b4f79c4f9ae0c19cc6d4aa64fc14c5b293d51178c1ef9a9e32f786662 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:29:05,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:29:05,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:29:05,976 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:29:05,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:29:06,022 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:29:06,023 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:29:06,023 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:29:06,024 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:29:06,024 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:29:06,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:29:06,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:29:06,025 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:29:06,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:29:06,027 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:29:06,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:29:06,028 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:29:06,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:29:06,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:29:06,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:29:06,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:29:06,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:29:06,030 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:29:06,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:29:06,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:29:06,032 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:29:06,032 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:29:06,032 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:29:06,032 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_bf284bfe-49d4-4bb6-a0da-180104d47a93/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 -> b3d0d63b4f79c4f9ae0c19cc6d4aa64fc14c5b293d51178c1ef9a9e32f786662 [2024-11-13 13:29:06,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:29:06,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:29:06,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:29:06,471 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:29:06,472 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:29:06,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c Unable to find full path for "g++" [2024-11-13 13:29:08,888 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:29:09,211 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:29:09,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c [2024-11-13 13:29:09,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/data/e8d32cc43/bd35625c6fdc49d28250e78b3410fb77/FLAGab8936568 [2024-11-13 13:29:09,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/data/e8d32cc43/bd35625c6fdc49d28250e78b3410fb77 [2024-11-13 13:29:09,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:29:09,282 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:29:09,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:29:09,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:29:09,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:29:09,292 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,297 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7567c2cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09, skipping insertion in model container [2024-11-13 13:29:09,297 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,320 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:29:09,523 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_bf284bfe-49d4-4bb6-a0da-180104d47a93/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c[545,558] [2024-11-13 13:29:09,555 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:29:09,570 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:29:09,586 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_bf284bfe-49d4-4bb6-a0da-180104d47a93/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound100.c[545,558] [2024-11-13 13:29:09,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:29:09,621 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:29:09,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09 WrapperNode [2024-11-13 13:29:09,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:29:09,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:29:09,629 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:29:09,629 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:29:09,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,679 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2024-11-13 13:29:09,679 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:29:09,680 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:29:09,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:29:09,683 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:29:09,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,695 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,715 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 13:29:09,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,718 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,723 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,732 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,733 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:29:09,738 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:29:09,738 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:29:09,738 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:29:09,740 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (1/1) ... [2024-11-13 13:29:09,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:29:09,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:09,788 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:29:09,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:29:09,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:29:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:29:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:29:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:29:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:29:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:29:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:29:09,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:29:09,934 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:29:09,938 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:29:10,152 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-13 13:29:10,152 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:29:10,165 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:29:10,165 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-13 13:29:10,166 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:10 BoogieIcfgContainer [2024-11-13 13:29:10,166 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:29:10,169 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:29:10,169 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:29:10,176 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:29:10,176 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:29:09" (1/3) ... [2024-11-13 13:29:10,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fff41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:10, skipping insertion in model container [2024-11-13 13:29:10,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:29:09" (2/3) ... [2024-11-13 13:29:10,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fff41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:10, skipping insertion in model container [2024-11-13 13:29:10,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:10" (3/3) ... [2024-11-13 13:29:10,180 INFO L112 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound100.c [2024-11-13 13:29:10,201 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:29:10,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG geo1-ll_valuebound100.c that has 3 procedures, 27 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-13 13:29:10,288 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:29:10,309 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;@6bd715fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:29:10,310 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:29:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:29:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:29:10,325 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:10,326 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:10,327 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:10,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:10,332 INFO L85 PathProgramCache]: Analyzing trace with hash 995674302, now seen corresponding path program 1 times [2024-11-13 13:29:10,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:10,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96401412] [2024-11-13 13:29:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:10,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:10,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:29:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:29:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:29:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:29:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:29:10,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96401412] [2024-11-13 13:29:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96401412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:10,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:10,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:29:10,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063856610] [2024-11-13 13:29:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:10,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:29:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:10,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:29:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:29:10,625 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:29:10,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:10,651 INFO L93 Difference]: Finished difference Result 51 states and 72 transitions. [2024-11-13 13:29:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:29:10,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2024-11-13 13:29:10,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:10,663 INFO L225 Difference]: With dead ends: 51 [2024-11-13 13:29:10,663 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 13:29:10,668 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:29:10,672 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:10,673 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:29:10,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 13:29:10,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 13:29:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 states have internal predecessors, (16), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 13:29:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 13:29:10,722 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 29 [2024-11-13 13:29:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:10,723 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 13:29:10,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 13:29:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 13:29:10,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 13:29:10,725 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:10,725 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:10,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:29:10,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:10,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:10,727 INFO L85 PathProgramCache]: Analyzing trace with hash -883779710, now seen corresponding path program 1 times [2024-11-13 13:29:10,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:10,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415759694] [2024-11-13 13:29:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:10,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:29:10,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386168133] [2024-11-13 13:29:10,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:10,804 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:10,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:29:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:10,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:29:10,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:29:11,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:11,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:11,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415759694] [2024-11-13 13:29:11,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:29:11,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386168133] [2024-11-13 13:29:11,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386168133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:11,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:29:11,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:29:11,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327514001] [2024-11-13 13:29:11,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:11,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:29:11,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:11,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:29:11,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:29:11,148 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 13:29:11,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:11,258 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2024-11-13 13:29:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:29:11,259 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2024-11-13 13:29:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:11,260 INFO L225 Difference]: With dead ends: 33 [2024-11-13 13:29:11,261 INFO L226 Difference]: Without dead ends: 31 [2024-11-13 13:29:11,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:29:11,263 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:11,263 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:11,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-13 13:29:11,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2024-11-13 13:29:11,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 20 states have internal predecessors, (20), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:29:11,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2024-11-13 13:29:11,275 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 29 [2024-11-13 13:29:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:11,278 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2024-11-13 13:29:11,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 13:29:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2024-11-13 13:29:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:29:11,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:11,284 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:11,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:29:11,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:11,489 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:11,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1016850061, now seen corresponding path program 1 times [2024-11-13 13:29:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197583252] [2024-11-13 13:29:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:29:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:29:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:29:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,300 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:29:12,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 13:29:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:29:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:12,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197583252] [2024-11-13 13:29:12,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197583252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:12,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815348694] [2024-11-13 13:29:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:12,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:12,367 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:12,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:29:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:12,482 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 13:29:12,485 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:12,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:29:12,646 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:29:12,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815348694] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:29:12,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:29:12,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2024-11-13 13:29:12,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620696329] [2024-11-13 13:29:12,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:29:12,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 13:29:12,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:12,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 13:29:12,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:29:12,653 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:29:12,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:12,756 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2024-11-13 13:29:12,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:29:12,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 36 [2024-11-13 13:29:12,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:12,758 INFO L225 Difference]: With dead ends: 38 [2024-11-13 13:29:12,758 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 13:29:12,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:29:12,760 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:12,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 105 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:29:12,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 13:29:12,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-13 13:29:12,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.105263157894737) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 13:29:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2024-11-13 13:29:12,772 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 36 [2024-11-13 13:29:12,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:12,773 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2024-11-13 13:29:12,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 13:29:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2024-11-13 13:29:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 13:29:12,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:12,775 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:12,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:29:12,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:12,977 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:12,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:12,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1064813571, now seen corresponding path program 1 times [2024-11-13 13:29:12,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:12,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478928899] [2024-11-13 13:29:12,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:12,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:29:13,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938984473] [2024-11-13 13:29:13,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:13,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:13,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:13,020 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:13,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:29:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:13,129 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:29:13,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:29:13,421 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:29:13,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:29:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-13 13:29:17,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478928899] [2024-11-13 13:29:17,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:29:17,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938984473] [2024-11-13 13:29:17,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938984473] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:29:17,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:29:17,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2024-11-13 13:29:17,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219081346] [2024-11-13 13:29:17,777 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:29:17,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:29:17,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:29:17,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:29:17,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2024-11-13 13:29:17,785 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 13:29:23,390 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:29:27,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:39,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:43,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:47,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:51,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:55,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:29:55,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:29:55,661 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2024-11-13 13:29:55,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 13:29:55,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 36 [2024-11-13 13:29:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:29:55,664 INFO L225 Difference]: With dead ends: 48 [2024-11-13 13:29:55,664 INFO L226 Difference]: Without dead ends: 46 [2024-11-13 13:29:55,665 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 17.6s TimeCoverageRelationStatistics Valid=43, Invalid=136, Unknown=3, NotChecked=0, Total=182 [2024-11-13 13:29:55,667 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.5s IncrementalHoareTripleChecker+Time [2024-11-13 13:29:55,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 154 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 6 Unknown, 0 Unchecked, 24.5s Time] [2024-11-13 13:29:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-13 13:29:55,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-11-13 13:29:55,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 29 states have internal predecessors, (31), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:29:55,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2024-11-13 13:29:55,687 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 36 [2024-11-13 13:29:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:29:55,688 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2024-11-13 13:29:55,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 9 states have internal predecessors, (23), 6 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 13:29:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2024-11-13 13:29:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 13:29:55,690 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:29:55,690 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:29:55,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:29:55,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:55,891 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:29:55,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:29:55,892 INFO L85 PathProgramCache]: Analyzing trace with hash -788211988, now seen corresponding path program 1 times [2024-11-13 13:29:55,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:29:55,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537092206] [2024-11-13 13:29:55,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:55,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:29:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:29:56,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 13:29:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 13:29:56,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:29:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 13:29:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:29:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,451 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:29:56,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:29:56,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537092206] [2024-11-13 13:29:56,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537092206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:29:56,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045067736] [2024-11-13 13:29:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:29:56,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:29:56,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:29:56,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:29:56,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:29:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:29:56,553 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 13:29:56,557 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:05,014 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:30:05,014 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-13 13:30:05,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045067736] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:30:05,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:30:05,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2024-11-13 13:30:05,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663365536] [2024-11-13 13:30:05,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:30:05,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:30:05,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:30:05,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:30:05,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=83, Unknown=2, NotChecked=0, Total=110 [2024-11-13 13:30:05,306 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:30:09,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:30:09,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:30:09,713 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2024-11-13 13:30:09,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:30:09,714 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 43 [2024-11-13 13:30:09,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:30:09,717 INFO L225 Difference]: With dead ends: 48 [2024-11-13 13:30:09,717 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 13:30:09,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 90 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=33, Invalid=97, Unknown=2, NotChecked=0, Total=132 [2024-11-13 13:30:09,719 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 4 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-13 13:30:09,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-11-13 13:30:09,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 13:30:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-11-13 13:30:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 27 states have internal predecessors, (27), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-13 13:30:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2024-11-13 13:30:09,737 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 43 [2024-11-13 13:30:09,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:30:09,738 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2024-11-13 13:30:09,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 10 states have internal predecessors, (25), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 13:30:09,738 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2024-11-13 13:30:09,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 13:30:09,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:30:09,740 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:30:09,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:30:09,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:09,945 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:30:09,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:30:09,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1804257602, now seen corresponding path program 2 times [2024-11-13 13:30:09,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:30:09,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765475001] [2024-11-13 13:30:09,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:30:09,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:30:09,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:30:10,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862916844] [2024-11-13 13:30:10,001 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:30:10,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:30:10,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:30:10,004 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:30:10,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:30:10,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:30:10,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:30:10,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 13:30:10,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:30:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 22 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 13:30:10,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:30:27,440 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615) 1) 18446744073709551616) 0))) is different from true [2024-11-13 13:30:40,984 WARN L286 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:30:49,451 WARN L873 $PredicateComparison]: unable to prove that (or (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0) (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) |c_ULTIMATE.start_main_~z~0#1| (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0))) is different from true [2024-11-13 13:31:18,135 WARN L873 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)) (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0)) is different from true [2024-11-13 13:31:25,462 WARN L286 SmtUtils]: Spent 7.31s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:31:42,152 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:31:51,754 WARN L286 SmtUtils]: Spent 5.50s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:31:56,152 WARN L873 $PredicateComparison]: unable to prove that (or (= 0 (mod (+ (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* 18446744073709551615 |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 18446744073709551615 |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1| |c_ULTIMATE.start_main_~z~0#1|)) 18446744073709551616) 0))) is different from true [2024-11-13 13:32:08,778 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:32:18,617 WARN L286 SmtUtils]: Spent 5.08s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 13:32:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 26 not checked. [2024-11-13 13:32:18,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:32:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765475001] [2024-11-13 13:32:18,675 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:32:18,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862916844] [2024-11-13 13:32:18,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862916844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:32:18,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:32:18,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 22 [2024-11-13 13:32:18,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891801196] [2024-11-13 13:32:18,676 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:32:18,677 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:32:18,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:32:18,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:32:18,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=256, Unknown=5, NotChecked=140, Total=462 [2024-11-13 13:32:18,683 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 19 states have internal predecessors, (42), 12 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-13 13:32:29,875 WARN L286 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 13:32:33,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:32:46,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:32:50,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:32:54,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:32:58,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:33:02,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-13 13:33:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:33:02,222 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2024-11-13 13:33:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 13:33:02,225 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 19 states have internal predecessors, (42), 12 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) Word has length 57 [2024-11-13 13:33:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:33:02,226 INFO L225 Difference]: With dead ends: 55 [2024-11-13 13:33:02,227 INFO L226 Difference]: Without dead ends: 53 [2024-11-13 13:33:02,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=89, Invalid=339, Unknown=8, NotChecked=164, Total=600 [2024-11-13 13:33:02,230 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 16 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-13 13:33:02,231 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 202 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 225 Invalid, 6 Unknown, 205 Unchecked, 24.7s Time] [2024-11-13 13:33:02,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-13 13:33:02,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-13 13:33:02,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-13 13:33:02,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2024-11-13 13:33:02,255 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 57 [2024-11-13 13:33:02,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:33:02,256 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2024-11-13 13:33:02,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.9090909090909092) internal successors, (42), 19 states have internal predecessors, (42), 12 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-13 13:33:02,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2024-11-13 13:33:02,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-13 13:33:02,259 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:33:02,259 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:33:02,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 13:33:02,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 13:33:02,460 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:33:02,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:33:02,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1357238627, now seen corresponding path program 3 times [2024-11-13 13:33:02,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:33:02,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110562332] [2024-11-13 13:33:02,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:33:02,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:33:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:33:02,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923520868] [2024-11-13 13:33:02,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:33:02,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:33:02,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:33:02,565 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:33:02,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf284bfe-49d4-4bb6-a0da-180104d47a93/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process