./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB --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 b1ee46ed25009cfb2b006b660160b882e6f1bd8c7030312b2c09762e840b6ce3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:08:52,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:08:52,592 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:08:52,608 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:08:52,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:08:52,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:08:52,649 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:08:52,649 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:08:52,650 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:08:52,651 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:08:52,651 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:08:52,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:08:52,653 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:08:52,653 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:08:52,653 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:08:52,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:08:52,654 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:08:52,655 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:08:52,655 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:08:52,655 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:08:52,656 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:08:52,656 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:08:52,656 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:08:52,656 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:08:52,656 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:52,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:52,657 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:52,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:52,658 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:08:52,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:08:52,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:08:52,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:08:52,658 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:52,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:08:52,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:08:52,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:08:52,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:08:52,659 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:08:52,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:08:52,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:08:52,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:08:52,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:08:52,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:08:52,660 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_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB 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 -> b1ee46ed25009cfb2b006b660160b882e6f1bd8c7030312b2c09762e840b6ce3 [2024-11-27 20:08:53,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:08:53,053 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:08:53,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:08:53,059 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:08:53,060 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:08:53,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c [2024-11-27 20:08:56,637 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/data/673fb4f80/0b8fc7260e064e20b91b45b33a2cb898/FLAG60eb5b69d [2024-11-27 20:08:57,055 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:08:57,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c [2024-11-27 20:08:57,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/data/673fb4f80/0b8fc7260e064e20b91b45b33a2cb898/FLAG60eb5b69d [2024-11-27 20:08:57,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/data/673fb4f80/0b8fc7260e064e20b91b45b33a2cb898 [2024-11-27 20:08:57,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:08:57,095 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:08:57,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:57,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:08:57,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:08:57,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:57,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a7c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57, skipping insertion in model container [2024-11-27 20:08:57,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:57,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:08:57,603 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_aa227b78-9c83-4e49-9cff-8996a57fa7b3/sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c[21308,21321] [2024-11-27 20:08:57,639 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:57,660 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:08:57,873 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_aa227b78-9c83-4e49-9cff-8996a57fa7b3/sv-benchmarks/c/xcsp/aim-100-2-0-sat-2.c[21308,21321] [2024-11-27 20:08:57,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:08:57,926 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:08:57,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57 WrapperNode [2024-11-27 20:08:57,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:08:57,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:57,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:08:57,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:08:57,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,000 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,391 INFO L138 Inliner]: procedures = 13, calls = 404, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 4121 [2024-11-27 20:08:58,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:08:58,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:08:58,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:08:58,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:08:58,405 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,405 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,558 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:08:58,558 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,558 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,732 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,746 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,903 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,973 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:08:58,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:08:58,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:08:58,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:08:58,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (1/1) ... [2024-11-27 20:08:58,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:08:59,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:08:59,027 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:08:59,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:08:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:08:59,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:08:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:08:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:08:59,070 INFO L130 BoogieDeclarations]: Found specification of procedure assume [2024-11-27 20:08:59,070 INFO L138 BoogieDeclarations]: Found implementation of procedure assume [2024-11-27 20:08:59,517 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:08:59,524 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:09:07,079 INFO L? ?]: Removed 917 outVars from TransFormulas that were not future-live. [2024-11-27 20:09:07,079 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:09:07,149 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:09:07,153 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 20:09:07,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:07 BoogieIcfgContainer [2024-11-27 20:09:07,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:09:07,157 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:09:07,159 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:09:07,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:09:07,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:08:57" (1/3) ... [2024-11-27 20:09:07,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c5d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:07, skipping insertion in model container [2024-11-27 20:09:07,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:08:57" (2/3) ... [2024-11-27 20:09:07,169 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34c5d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:09:07, skipping insertion in model container [2024-11-27 20:09:07,169 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:09:07" (3/3) ... [2024-11-27 20:09:07,170 INFO L128 eAbstractionObserver]: Analyzing ICFG aim-100-2-0-sat-2.c [2024-11-27 20:09:07,192 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:09:07,196 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aim-100-2-0-sat-2.c that has 2 procedures, 1908 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 20:09:07,384 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:09:07,407 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;@838a68c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:09:07,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:09:07,426 INFO L276 IsEmpty]: Start isEmpty. Operand has 1908 states, 1508 states have (on average 1.53315649867374) internal successors, (2312), 1509 states have internal predecessors, (2312), 397 states have call successors, (397), 1 states have call predecessors, (397), 1 states have return successors, (397), 397 states have call predecessors, (397), 397 states have call successors, (397) [2024-11-27 20:09:07,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2687 [2024-11-27 20:09:07,697 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:07,700 INFO L218 NwaCegarLoop]: trace histogram [397, 397, 397, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:07,700 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:07,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:07,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1828812196, now seen corresponding path program 1 times [2024-11-27 20:09:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:07,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103074285] [2024-11-27 20:09:07,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:11,859 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 0 proven. 792 refuted. 0 times theorem prover too weak. 313632 trivial. 0 not checked. [2024-11-27 20:09:11,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:09:11,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103074285] [2024-11-27 20:09:11,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103074285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:09:11,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707538092] [2024-11-27 20:09:11,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:11,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:09:11,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:09:11,871 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:09:11,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:09:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:09:13,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 5199 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:09:13,520 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:09:13,895 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 792 proven. 0 refuted. 0 times theorem prover too weak. 313632 trivial. 0 not checked. [2024-11-27 20:09:13,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:09:13,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707538092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:09:13,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:09:13,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:09:13,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163150123] [2024-11-27 20:09:13,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:09:13,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:09:13,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:09:13,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:09:13,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:09:13,957 INFO L87 Difference]: Start difference. First operand has 1908 states, 1508 states have (on average 1.53315649867374) internal successors, (2312), 1509 states have internal predecessors, (2312), 397 states have call successors, (397), 1 states have call predecessors, (397), 1 states have return successors, (397), 397 states have call predecessors, (397), 397 states have call successors, (397) Second operand has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 2 states have call successors, (397), 2 states have call predecessors, (397), 1 states have return successors, (397), 1 states have call predecessors, (397), 2 states have call successors, (397) [2024-11-27 20:09:14,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:09:14,277 INFO L93 Difference]: Finished difference Result 3810 states and 6603 transitions. [2024-11-27 20:09:14,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:09:14,282 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 2 states have call successors, (397), 2 states have call predecessors, (397), 1 states have return successors, (397), 1 states have call predecessors, (397), 2 states have call successors, (397) Word has length 2686 [2024-11-27 20:09:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:09:14,318 INFO L225 Difference]: With dead ends: 3810 [2024-11-27 20:09:14,318 INFO L226 Difference]: Without dead ends: 1905 [2024-11-27 20:09:14,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2687 GetRequests, 2687 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:09:14,337 INFO L435 NwaCegarLoop]: 3102 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, 3102 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 [2024-11-27 20:09:14,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:09:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-11-27 20:09:14,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1905. [2024-11-27 20:09:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1506 states have (on average 1.5325365205843293) internal successors, (2308), 1506 states have internal predecessors, (2308), 397 states have call successors, (397), 1 states have call predecessors, (397), 1 states have return successors, (397), 397 states have call predecessors, (397), 397 states have call successors, (397) [2024-11-27 20:09:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3102 transitions. [2024-11-27 20:09:14,798 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3102 transitions. Word has length 2686 [2024-11-27 20:09:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:09:14,800 INFO L471 AbstractCegarLoop]: Abstraction has 1905 states and 3102 transitions. [2024-11-27 20:09:14,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 353.0) internal successors, (706), 2 states have internal predecessors, (706), 2 states have call successors, (397), 2 states have call predecessors, (397), 1 states have return successors, (397), 1 states have call predecessors, (397), 2 states have call successors, (397) [2024-11-27 20:09:14,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3102 transitions. [2024-11-27 20:09:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2687 [2024-11-27 20:09:14,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:09:14,982 INFO L218 NwaCegarLoop]: trace histogram [397, 397, 397, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:09:15,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:09:15,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:09:15,183 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:09:15,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:09:15,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2034863978, now seen corresponding path program 1 times [2024-11-27 20:09:15,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:09:15,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898853149] [2024-11-27 20:09:15,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:09:15,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:09:17,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:53,387 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 5076 proven. 16470 refuted. 0 times theorem prover too weak. 292878 trivial. 0 not checked. [2024-11-27 20:10:53,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:10:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898853149] [2024-11-27 20:10:53,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898853149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:10:53,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31350218] [2024-11-27 20:10:53,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:10:53,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:10:53,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:10:53,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:10:53,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:10:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:10:54,731 INFO L256 TraceCheckSpWp]: Trace formula consists of 5199 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-27 20:10:54,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:11:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 23616 proven. 6072 refuted. 0 times theorem prover too weak. 284736 trivial. 0 not checked. [2024-11-27 20:11:10,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:11:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 696 proven. 6342 refuted. 0 times theorem prover too weak. 307386 trivial. 0 not checked. [2024-11-27 20:11:31,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31350218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:11:31,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:11:31,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 14, 14] total 54 [2024-11-27 20:11:31,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111175060] [2024-11-27 20:11:31,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:11:31,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-27 20:11:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:11:31,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-27 20:11:31,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=2567, Unknown=0, NotChecked=0, Total=2862 [2024-11-27 20:11:31,484 INFO L87 Difference]: Start difference. First operand 1905 states and 3102 transitions. Second operand has 54 states, 34 states have (on average 50.85294117647059) internal successors, (1729), 40 states have internal predecessors, (1729), 47 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1012), 41 states have call predecessors, (1012), 47 states have call successors, (1012) [2024-11-27 20:13:02,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:13:02,339 INFO L93 Difference]: Finished difference Result 28845 states and 47000 transitions. [2024-11-27 20:13:02,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2024-11-27 20:13:02,342 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 34 states have (on average 50.85294117647059) internal successors, (1729), 40 states have internal predecessors, (1729), 47 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1012), 41 states have call predecessors, (1012), 47 states have call successors, (1012) Word has length 2686 [2024-11-27 20:13:02,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:13:02,497 INFO L225 Difference]: With dead ends: 28845 [2024-11-27 20:13:02,497 INFO L226 Difference]: Without dead ends: 27948 [2024-11-27 20:13:02,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5582 GetRequests, 5400 SyntacticMatches, 10 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8617 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=7672, Invalid=22430, Unknown=0, NotChecked=0, Total=30102 [2024-11-27 20:13:02,516 INFO L435 NwaCegarLoop]: 7675 mSDtfsCounter, 224629 mSDsluCounter, 105891 mSDsCounter, 0 mSdLazyCounter, 23273 mSolverCounterSat, 20328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224635 SdHoareTripleChecker+Valid, 113566 SdHoareTripleChecker+Invalid, 43601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.7s SdHoareTripleChecker+Time, 20328 IncrementalHoareTripleChecker+Valid, 23273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 50.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:13:02,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [224635 Valid, 113566 Invalid, 43601 Unknown, 0 Unchecked, 0.7s Time], IncrementalHoareTripleChecker [20328 Valid, 23273 Invalid, 0 Unknown, 0 Unchecked, 50.7s Time] [2024-11-27 20:13:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27948 states. [2024-11-27 20:13:05,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27948 to 18951. [2024-11-27 20:13:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18951 states, 16421 states have (on average 1.5672005358991534) internal successors, (25735), 16421 states have internal predecessors, (25735), 2528 states have call successors, (2528), 1 states have call predecessors, (2528), 1 states have return successors, (2528), 2528 states have call predecessors, (2528), 2528 states have call successors, (2528) [2024-11-27 20:13:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18951 states to 18951 states and 30791 transitions. [2024-11-27 20:13:05,367 INFO L78 Accepts]: Start accepts. Automaton has 18951 states and 30791 transitions. Word has length 2686 [2024-11-27 20:13:05,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:13:05,375 INFO L471 AbstractCegarLoop]: Abstraction has 18951 states and 30791 transitions. [2024-11-27 20:13:05,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 34 states have (on average 50.85294117647059) internal successors, (1729), 40 states have internal predecessors, (1729), 47 states have call successors, (1010), 2 states have call predecessors, (1010), 3 states have return successors, (1012), 41 states have call predecessors, (1012), 47 states have call successors, (1012) [2024-11-27 20:13:05,377 INFO L276 IsEmpty]: Start isEmpty. Operand 18951 states and 30791 transitions. [2024-11-27 20:13:05,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2689 [2024-11-27 20:13:05,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:13:05,523 INFO L218 NwaCegarLoop]: trace histogram [397, 397, 397, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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, 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] [2024-11-27 20:13:05,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:13:05,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:05,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:13:05,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:13:05,731 INFO L85 PathProgramCache]: Analyzing trace with hash -602030070, now seen corresponding path program 1 times [2024-11-27 20:13:05,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:13:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142083126] [2024-11-27 20:13:05,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:13:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 2526 proven. 5664 refuted. 0 times theorem prover too weak. 306234 trivial. 0 not checked. [2024-11-27 20:13:34,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:13:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142083126] [2024-11-27 20:13:34,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142083126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:13:34,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287299261] [2024-11-27 20:13:34,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:13:34,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:13:34,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:13:34,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:13:34,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa227b78-9c83-4e49-9cff-8996a57fa7b3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:13:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:13:36,373 INFO L256 TraceCheckSpWp]: Trace formula consists of 5205 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-27 20:13:36,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:14:26,598 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 7620 proven. 15252 refuted. 0 times theorem prover too weak. 291552 trivial. 0 not checked. [2024-11-27 20:14:26,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:15:09,833 INFO L134 CoverageAnalysis]: Checked inductivity of 314424 backedges. 2892 proven. 15396 refuted. 0 times theorem prover too weak. 296136 trivial. 0 not checked. [2024-11-27 20:15:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287299261] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:15:09,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:15:09,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29, 29] total 62 [2024-11-27 20:15:09,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309545242] [2024-11-27 20:15:09,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:15:09,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 20:15:09,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:15:09,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 20:15:09,845 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=3150, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:15:09,847 INFO L87 Difference]: Start difference. First operand 18951 states and 30791 transitions. Second operand has 62 states, 44 states have (on average 46.5) internal successors, (2046), 44 states have internal predecessors, (2046), 57 states have call successors, (1139), 2 states have call predecessors, (1139), 3 states have return successors, (1141), 57 states have call predecessors, (1141), 57 states have call successors, (1141)