./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/condgf.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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/condgf.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/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 f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:53:08,904 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:53:09,005 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:53:09,010 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:53:09,014 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:53:09,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:53:09,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:53:09,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:53:09,044 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:53:09,044 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:53:09,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:53:09,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:53:09,045 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:53:09,045 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:53:09,045 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:53:09,046 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:53:09,046 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:53:09,047 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:53:09,047 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:53:09,048 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:53:09,048 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:53:09,048 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:53:09,048 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:09,048 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:53:09,048 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:53:09,049 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:53:09,049 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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/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 -> f6e9c50b7debf63002c3de8c5fbbc063838f4d20677e88c6b86a62b1ad965f5f [2024-11-13 14:53:09,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:53:09,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:53:09,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:53:09,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:53:09,389 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:53:09,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-fpi/condgf.c Unable to find full path for "g++" [2024-11-13 14:53:11,397 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:53:11,636 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:53:11,637 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/sv-benchmarks/c/array-fpi/condgf.c [2024-11-13 14:53:11,645 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/data/679bc1662/396c0c131c2a49c68ea7512ed6995055/FLAGba19d89f6 [2024-11-13 14:53:11,975 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/data/679bc1662/396c0c131c2a49c68ea7512ed6995055 [2024-11-13 14:53:11,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:53:11,979 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:53:11,980 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:11,980 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:53:11,985 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:53:11,986 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:11" (1/1) ... [2024-11-13 14:53:11,987 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@451ebd27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:11, skipping insertion in model container [2024-11-13 14:53:11,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:53:11" (1/1) ... [2024-11-13 14:53:12,002 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:53:12,159 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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2024-11-13 14:53:12,193 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:12,206 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:53:12,218 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_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/sv-benchmarks/c/array-fpi/condgf.c[589,602] [2024-11-13 14:53:12,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:53:12,245 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:53:12,246 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12 WrapperNode [2024-11-13 14:53:12,246 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:53:12,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:12,248 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:53:12,248 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:53:12,255 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,282 INFO L138 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 85 [2024-11-13 14:53:12,283 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:53:12,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:53:12,284 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:53:12,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:53:12,293 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,293 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,295 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,318 INFO L175 MemorySlicer]: Split 13 memory accesses to 3 slices as follows [2, 7, 4]. 54 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 5 writes are split as follows [0, 3, 2]. [2024-11-13 14:53:12,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,327 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,342 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,343 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:53:12,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:53:12,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:53:12,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:53:12,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (1/1) ... [2024-11-13 14:53:12,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:53:12,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:12,384 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:53:12,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:53:12,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:53:12,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:53:12,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:53:12,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:53:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:53:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:53:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-13 14:53:12,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:53:12,519 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:53:12,521 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:53:12,754 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-13 14:53:12,755 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:53:12,768 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:53:12,769 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 14:53:12,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:12 BoogieIcfgContainer [2024-11-13 14:53:12,770 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:53:12,774 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:53:12,774 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:53:12,779 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:53:12,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:53:11" (1/3) ... [2024-11-13 14:53:12,780 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfeed95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:12, skipping insertion in model container [2024-11-13 14:53:12,780 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:53:12" (2/3) ... [2024-11-13 14:53:12,781 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bfeed95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:53:12, skipping insertion in model container [2024-11-13 14:53:12,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:12" (3/3) ... [2024-11-13 14:53:12,784 INFO L112 eAbstractionObserver]: Analyzing ICFG condgf.c [2024-11-13 14:53:12,797 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:53:12,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG condgf.c that has 1 procedures, 22 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 14:53:12,849 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:53:12,861 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;@73c9f27d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:53:12,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:53:12,864 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:53:12,869 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:12,869 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:12,870 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:12,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:12,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1666652947, now seen corresponding path program 1 times [2024-11-13 14:53:12,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:12,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397666704] [2024-11-13 14:53:12,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:13,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:13,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397666704] [2024-11-13 14:53:13,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397666704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:13,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:13,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:53:13,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188154298] [2024-11-13 14:53:13,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:13,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:53:13,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:13,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:53:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:53:13,062 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.65) internal successors, (33), 21 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:13,078 INFO L93 Difference]: Finished difference Result 40 states and 60 transitions. [2024-11-13 14:53:13,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:53:13,081 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:53:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:13,086 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:53:13,087 INFO L226 Difference]: Without dead ends: 18 [2024-11-13 14:53:13,089 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:53:13,092 INFO L432 NwaCegarLoop]: 27 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, 27 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 14:53:13,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:53:13,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-13 14:53:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2024-11-13 14:53:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-11-13 14:53:13,122 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 14 [2024-11-13 14:53:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:13,122 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-11-13 14:53:13,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-11-13 14:53:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 14:53:13,123 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:13,123 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:13,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:53:13,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:13,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:13,124 INFO L85 PathProgramCache]: Analyzing trace with hash -975747100, now seen corresponding path program 1 times [2024-11-13 14:53:13,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:13,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917020477] [2024-11-13 14:53:13,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:13,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:13,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:13,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917020477] [2024-11-13 14:53:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917020477] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:53:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:53:13,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:53:13,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135000692] [2024-11-13 14:53:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:53:13,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:53:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:53:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:13,335 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:13,434 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2024-11-13 14:53:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:53:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 14:53:13,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:13,436 INFO L225 Difference]: With dead ends: 40 [2024-11-13 14:53:13,437 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 14:53:13,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:53:13,438 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:13,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 14 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:53:13,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 14:53:13,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 21. [2024-11-13 14:53:13,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-13 14:53:13,447 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2024-11-13 14:53:13,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:13,447 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-13 14:53:13,448 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:13,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-13 14:53:13,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:53:13,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:13,449 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:13,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:53:13,449 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:13,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1858932726, now seen corresponding path program 1 times [2024-11-13 14:53:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2185561] [2024-11-13 14:53:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:14,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:14,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:53:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2185561] [2024-11-13 14:53:14,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2185561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:53:14,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358717791] [2024-11-13 14:53:14,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:14,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:14,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:53:14,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:53:14,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:53:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:53:14,540 INFO L255 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:53:14,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:53:14,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:53:14,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:53:14,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-13 14:53:14,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:53:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:14,930 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:53:15,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2024-11-13 14:53:15,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2024-11-13 14:53:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:53:15,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358717791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:53:15,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:53:15,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-13 14:53:15,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2644485] [2024-11-13 14:53:15,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:53:15,171 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:53:15,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:53:15,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:53:15,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:53:15,175 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:53:15,862 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2024-11-13 14:53:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-13 14:53:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 14:53:15,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:53:15,864 INFO L225 Difference]: With dead ends: 52 [2024-11-13 14:53:15,864 INFO L226 Difference]: Without dead ends: 43 [2024-11-13 14:53:15,865 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:53:15,866 INFO L432 NwaCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:53:15,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 101 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:53:15,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-13 14:53:15,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30. [2024-11-13 14:53:15,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:15,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-13 14:53:15,879 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 19 [2024-11-13 14:53:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:53:15,879 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-13 14:53:15,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.85) internal successors, (37), 20 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:53:15,880 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-13 14:53:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 14:53:15,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:53:15,880 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:53:15,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:53:16,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:53:16,081 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:53:16,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:53:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash -661027208, now seen corresponding path program 1 times [2024-11-13 14:53:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:53:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790325027] [2024-11-13 14:53:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:53:16,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:53:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:16,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:53:16,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:53:16,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:53:16,140 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:53:16,141 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-13 14:53:16,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:53:16,146 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 14:53:16,168 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:53:16,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:53:16 BoogieIcfgContainer [2024-11-13 14:53:16,172 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:53:16,172 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:53:16,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:53:16,173 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:53:16,173 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:53:12" (3/4) ... [2024-11-13 14:53:16,174 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 14:53:16,223 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9249f29-bd5e-4bdc-aeb7-f67c4eac4940/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:53:16,223 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:53:16,225 INFO L158 Benchmark]: Toolchain (without parser) took 4245.99ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 46.9MB in the end (delta: 45.8MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,225 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:53:16,226 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.60ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 81.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,226 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.41ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:53:16,227 INFO L158 Benchmark]: Boogie Preprocessor took 60.41ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,227 INFO L158 Benchmark]: RCFGBuilder took 424.33ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 66.5MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,227 INFO L158 Benchmark]: TraceAbstraction took 3398.08ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 49.8MB in the end (delta: 16.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,228 INFO L158 Benchmark]: Witness Printer took 51.67ms. Allocated memory is still 117.4MB. Free memory was 49.8MB in the beginning and 46.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:53:16,229 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 117.4MB. Free memory is still 74.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.60ms. Allocated memory is still 117.4MB. Free memory was 92.5MB in the beginning and 81.0MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.41ms. Allocated memory is still 117.4MB. Free memory was 81.0MB in the beginning and 79.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 60.41ms. Allocated memory is still 117.4MB. Free memory was 79.8MB in the beginning and 78.2MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 424.33ms. Allocated memory is still 117.4MB. Free memory was 78.1MB in the beginning and 66.5MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3398.08ms. Allocated memory is still 117.4MB. Free memory was 66.0MB in the beginning and 49.8MB in the end (delta: 16.1MB). Peak memory consumption was 13.3MB. Max. memory is 16.1GB. * Witness Printer took 51.67ms. Allocated memory is still 117.4MB. Free memory was 49.8MB in the beginning and 46.9MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) VAL [N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 VAL [N=1, a={-1:0}, i=0, sum={5:0}] [L32] COND TRUE i