./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 21cdb68b157f5f8b7463533f545ac6ba72a59d04f7166c24abe2ffbb265d260d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:40:29,271 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:40:29,328 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:40:29,334 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:40:29,334 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:40:29,371 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:40:29,371 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:40:29,371 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:40:29,372 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:40:29,373 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:40:29,373 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:40:29,373 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:40:29,374 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:40:29,374 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:40:29,374 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:40:29,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:40:29,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:40:29,375 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:40:29,376 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:40:29,377 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:40:29,377 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:40:29,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:40:29,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:40:29,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:40:29,378 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_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 21cdb68b157f5f8b7463533f545ac6ba72a59d04f7166c24abe2ffbb265d260d [2024-11-24 00:40:29,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:40:29,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:40:29,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:40:29,708 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:40:29,709 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:40:29,710 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c [2024-11-24 00:40:33,000 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/data/fd4569c73/b62b8d1c1dad4c1c837f8f87b2eedf48/FLAG63d0ed93d [2024-11-24 00:40:33,295 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:40:33,298 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c [2024-11-24 00:40:33,311 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/data/fd4569c73/b62b8d1c1dad4c1c837f8f87b2eedf48/FLAG63d0ed93d [2024-11-24 00:40:33,343 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/data/fd4569c73/b62b8d1c1dad4c1c837f8f87b2eedf48 [2024-11-24 00:40:33,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:40:33,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:40:33,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:40:33,352 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:40:33,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:40:33,359 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0eeb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33, skipping insertion in model container [2024-11-24 00:40:33,363 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:40:33,596 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_f346a675-7755-412c-8cda-bdcf0bd3f937/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c[552,565] [2024-11-24 00:40:33,634 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:40:33,650 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:40:33,668 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_f346a675-7755-412c-8cda-bdcf0bd3f937/sv-benchmarks/c/nla-digbench-scaling/lcm1_valuebound20.c[552,565] [2024-11-24 00:40:33,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:40:33,713 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:40:33,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33 WrapperNode [2024-11-24 00:40:33,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:40:33,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:40:33,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:40:33,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:40:33,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,759 INFO L138 Inliner]: procedures = 14, calls = 25, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2024-11-24 00:40:33,760 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:40:33,761 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:40:33,762 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:40:33,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:40:33,774 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,775 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,776 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,804 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2024-11-24 00:40:33,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,811 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,817 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,823 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,825 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:40:33,830 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:40:33,830 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:40:33,830 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:40:33,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (1/1) ... [2024-11-24 00:40:33,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:40:33,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:33,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:40:33,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:40:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:40:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:40:33,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:40:33,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:40:33,990 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:40:33,993 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:40:34,238 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-24 00:40:34,238 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:40:34,250 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:40:34,251 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-24 00:40:34,251 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:40:34 BoogieIcfgContainer [2024-11-24 00:40:34,251 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:40:34,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:40:34,254 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:40:34,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:40:34,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:40:33" (1/3) ... [2024-11-24 00:40:34,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42327b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:40:34, skipping insertion in model container [2024-11-24 00:40:34,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:40:33" (2/3) ... [2024-11-24 00:40:34,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42327b58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:40:34, skipping insertion in model container [2024-11-24 00:40:34,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:40:34" (3/3) ... [2024-11-24 00:40:34,264 INFO L128 eAbstractionObserver]: Analyzing ICFG lcm1_valuebound20.c [2024-11-24 00:40:34,284 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:40:34,286 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG lcm1_valuebound20.c that has 3 procedures, 32 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-24 00:40:34,368 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:40:34,388 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;@7bfef5e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:40:34,388 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:40:34,395 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-24 00:40:34,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:40:34,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:34,406 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:34,407 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:34,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:34,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1844980324, now seen corresponding path program 1 times [2024-11-24 00:40:34,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:34,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818449930] [2024-11-24 00:40:34,426 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:40:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:34,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818449930] [2024-11-24 00:40:34,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818449930] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:40:34,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312425332] [2024-11-24 00:40:34,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:34,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:34,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:34,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:34,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:40:34,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:34,804 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:40:34,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-24 00:40:34,832 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:40:34,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312425332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:40:34,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:40:34,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:40:34,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364835729] [2024-11-24 00:40:34,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:40:34,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:40:34,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:34,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:40:34,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:40:34,872 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 18 states have internal predecessors, (29), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:40:34,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:34,897 INFO L93 Difference]: Finished difference Result 61 states and 109 transitions. [2024-11-24 00:40:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:40:34,900 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2024-11-24 00:40:34,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:34,909 INFO L225 Difference]: With dead ends: 61 [2024-11-24 00:40:34,909 INFO L226 Difference]: Without dead ends: 28 [2024-11-24 00:40:34,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:40:34,917 INFO L435 NwaCegarLoop]: 43 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, 43 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:34,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:40:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-24 00:40:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-24 00:40:34,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-24 00:40:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2024-11-24 00:40:34,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 38 [2024-11-24 00:40:34,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:34,962 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2024-11-24 00:40:34,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-24 00:40:34,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2024-11-24 00:40:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:40:34,965 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:34,965 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:34,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:40:35,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:40:35,167 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:35,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:35,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1809244448, now seen corresponding path program 1 times [2024-11-24 00:40:35,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:35,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691549697] [2024-11-24 00:40:35,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:35,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:40:35,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [947114661] [2024-11-24 00:40:35,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:35,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:35,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:35,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:35,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:40:35,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:40:35,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:40:35,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:40:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-24 00:40:35,592 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:40:35,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:40:35,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691549697] [2024-11-24 00:40:35,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-24 00:40:35,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947114661] [2024-11-24 00:40:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947114661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:40:35,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:40:35,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:40:35,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739547131] [2024-11-24 00:40:35,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:40:35,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:40:35,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:40:35,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:40:35,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:40:35,598 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:40:35,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:40:35,879 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2024-11-24 00:40:35,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:40:35,880 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2024-11-24 00:40:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:40:35,882 INFO L225 Difference]: With dead ends: 42 [2024-11-24 00:40:35,882 INFO L226 Difference]: Without dead ends: 40 [2024-11-24 00:40:35,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:40:35,883 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 7 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:40:35,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 107 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:40:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-24 00:40:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-24 00:40:35,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-24 00:40:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 54 transitions. [2024-11-24 00:40:35,898 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 54 transitions. Word has length 38 [2024-11-24 00:40:35,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:40:35,899 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 54 transitions. [2024-11-24 00:40:35,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:40:35,900 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 54 transitions. [2024-11-24 00:40:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 00:40:35,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:40:35,901 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:40:35,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:40:36,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:36,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:40:36,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:40:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 269071352, now seen corresponding path program 1 times [2024-11-24 00:40:36,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:40:36,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048236965] [2024-11-24 00:40:36,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:36,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:40:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:40:36,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549895800] [2024-11-24 00:40:36,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:40:36,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:40:36,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:40:36,200 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:40:36,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f346a675-7755-412c-8cda-bdcf0bd3f937/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process