./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem12_label53.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem12_label53.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU --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 053df9010d5712277310e4ef905c5ec88d30ed5d93ad0429bc9d2f63ecfb87d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:15,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:15,144 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:15,149 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:15,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:15,181 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:15,181 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:15,182 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:15,183 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:15,183 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:15,184 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:15,184 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:15,185 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:15,186 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:15,186 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:15,187 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:15,189 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:15,190 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:15,190 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:15,191 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:15,191 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:15,196 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:15,196 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:15,197 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:15,197 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:15,198 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:15,198 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:15,198 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:15,199 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:15,199 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:15,199 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:15,200 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:15,200 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:15,201 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:15,201 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:15,201 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:15,202 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:15,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:15,203 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:15,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:15,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:15,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:15,205 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 053df9010d5712277310e4ef905c5ec88d30ed5d93ad0429bc9d2f63ecfb87d7 [2024-10-31 22:09:15,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:15,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:15,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:15,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:15,525 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:15,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/eca-rers2012/Problem12_label53.c Unable to find full path for "g++" [2024-10-31 22:09:17,911 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:18,385 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:18,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/sv-benchmarks/c/eca-rers2012/Problem12_label53.c [2024-10-31 22:09:18,421 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/data/98ebbd4c5/a8e21f382e3b470a9852f536a81d2787/FLAG1b18440fc [2024-10-31 22:09:18,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/data/98ebbd4c5/a8e21f382e3b470a9852f536a81d2787 [2024-10-31 22:09:18,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:18,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:18,496 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:18,496 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:18,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:18,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:18" (1/1) ... [2024-10-31 22:09:18,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f6d0883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:18, skipping insertion in model container [2024-10-31 22:09:18,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:18" (1/1) ... [2024-10-31 22:09:18,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:19,076 WARN L251 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_816f0bea-e152-4eb9-9dc1-3e93e446f64f/sv-benchmarks/c/eca-rers2012/Problem12_label53.c[4245,4258] [2024-10-31 22:09:20,180 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:20,193 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:20,219 WARN L251 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_816f0bea-e152-4eb9-9dc1-3e93e446f64f/sv-benchmarks/c/eca-rers2012/Problem12_label53.c[4245,4258] [2024-10-31 22:09:20,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:20,838 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:20,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20 WrapperNode [2024-10-31 22:09:20,839 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:20,840 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:20,840 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:20,840 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:20,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:20,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,382 INFO L138 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 4761 [2024-10-31 22:09:21,383 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:21,383 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:21,384 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:21,384 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:21,396 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,597 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:09:21,597 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,597 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,778 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,820 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,843 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,861 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:21,914 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:21,914 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:21,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:21,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (1/1) ... [2024-10-31 22:09:21,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:21,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:21,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:21,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_816f0bea-e152-4eb9-9dc1-3e93e446f64f/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:21,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:21,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:21,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:22,084 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:22,087 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:28,718 INFO L? ?]: Removed 702 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:28,720 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:28,789 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:28,789 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:09:28,790 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:28 BoogieIcfgContainer [2024-10-31 22:09:28,790 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:28,793 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:28,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:28,799 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:28,799 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:18" (1/3) ... [2024-10-31 22:09:28,800 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4ac4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:28, skipping insertion in model container [2024-10-31 22:09:28,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:20" (2/3) ... [2024-10-31 22:09:28,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c4ac4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:28, skipping insertion in model container [2024-10-31 22:09:28,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:28" (3/3) ... [2024-10-31 22:09:28,805 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label53.c [2024-10-31 22:09:28,828 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:28,828 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:28,951 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:28,960 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;@57d04422, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:28,961 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:09:28,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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) [2024-10-31 22:09:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-31 22:09:28,986 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:28,988 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:28,988 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:28,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:28,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1317301102, now seen corresponding path program 1 times [2024-10-31 22:09:29,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:29,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54783926] [2024-10-31 22:09:29,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:29,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:29,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:29,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54783926] [2024-10-31 22:09:29,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54783926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:29,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:29,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:29,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414278893] [2024-10-31 22:09:29,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:29,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:29,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:29,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:29,747 INFO L87 Difference]: Start difference. First operand has 818 states, 816 states have (on average 1.9178921568627452) internal successors, (1565), 817 states have internal predecessors, (1565), 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 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-31 22:09:39,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:39,071 INFO L93 Difference]: Finished difference Result 3155 states and 6150 transitions. [2024-10-31 22:09:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:09:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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 32 [2024-10-31 22:09:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:39,107 INFO L225 Difference]: With dead ends: 3155 [2024-10-31 22:09:39,107 INFO L226 Difference]: Without dead ends: 2265 [2024-10-31 22:09:39,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:09:39,128 INFO L432 NwaCegarLoop]: 208 mSDtfsCounter, 2432 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3734 mSolverCounterSat, 1719 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2432 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 5453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1719 IncrementalHoareTripleChecker+Valid, 3734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:39,129 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2432 Valid, 234 Invalid, 5453 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1719 Valid, 3734 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2024-10-31 22:09:39,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2024-10-31 22:09:39,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2257. [2024-10-31 22:09:39,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2257 states, 2256 states have (on average 1.5350177304964538) internal successors, (3463), 2256 states have internal predecessors, (3463), 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) [2024-10-31 22:09:39,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2257 states to 2257 states and 3463 transitions. [2024-10-31 22:09:39,296 INFO L78 Accepts]: Start accepts. Automaton has 2257 states and 3463 transitions. Word has length 32 [2024-10-31 22:09:39,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:39,297 INFO L471 AbstractCegarLoop]: Abstraction has 2257 states and 3463 transitions. [2024-10-31 22:09:39,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 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) [2024-10-31 22:09:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2257 states and 3463 transitions. [2024-10-31 22:09:39,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-10-31 22:09:39,305 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:39,306 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:39,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:39,306 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:39,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:39,309 INFO L85 PathProgramCache]: Analyzing trace with hash -831855753, now seen corresponding path program 1 times [2024-10-31 22:09:39,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:39,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576331647] [2024-10-31 22:09:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:39,934 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:39,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:39,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576331647] [2024-10-31 22:09:39,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576331647] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:39,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:39,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:39,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288956745] [2024-10-31 22:09:39,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:39,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:09:39,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:39,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:09:39,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:09:39,940 INFO L87 Difference]: Start difference. First operand 2257 states and 3463 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 3 states have internal predecessors, (172), 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)