./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:33:28,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:33:28,562 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:33:28,570 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:33:28,571 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:33:28,618 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:33:28,619 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:33:28,619 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:33:28,620 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:33:28,620 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:33:28,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:33:28,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:33:28,623 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:33:28,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:33:28,623 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:33:28,623 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:33:28,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:33:28,623 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:33:28,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:33:28,624 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:33:28,625 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:33:28,625 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:33:28,625 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:33:28,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:33:28,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:33:28,625 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:33:28,627 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:33:28,627 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:33:28,627 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:33:28,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:33:28,627 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:33:28,627 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:33:28,628 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:33:28,628 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:33:28,628 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:33:28,628 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:33:28,629 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:33:28,629 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:33:28,629 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:33:28,629 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:33:28,629 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 [2024-11-24 00:33:29,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:33:29,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:33:29,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:33:29,042 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:33:29,042 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:33:29,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:33:32,243 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/477c340eb/ec7abea8d8db413aa51069cd8f5795d1/FLAG65e9aba90 [2024-11-24 00:33:32,586 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:33:32,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:33:32,598 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/477c340eb/ec7abea8d8db413aa51069cd8f5795d1/FLAG65e9aba90 [2024-11-24 00:33:32,617 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/477c340eb/ec7abea8d8db413aa51069cd8f5795d1 [2024-11-24 00:33:32,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:33:32,621 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:33:32,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:33:32,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:33:32,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:33:32,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:32" (1/1) ... [2024-11-24 00:33:32,630 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697dde01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:32, skipping insertion in model container [2024-11-24 00:33:32,630 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:33:32" (1/1) ... [2024-11-24 00:33:32,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:33:32,837 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-24 00:33:32,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:33:32,972 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:33:32,990 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-24 00:33:33,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:33:33,138 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:33:33,139 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33 WrapperNode [2024-11-24 00:33:33,140 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:33:33,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:33:33,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:33:33,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:33:33,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,239 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 254 [2024-11-24 00:33:33,239 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:33:33,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:33:33,240 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:33:33,240 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:33:33,250 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,254 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,314 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]. [2024-11-24 00:33:33,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,340 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,345 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,353 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,372 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:33:33,373 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:33:33,373 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:33:33,373 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:33:33,376 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (1/1) ... [2024-11-24 00:33:33,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:33:33,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:33,417 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:33:33,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:33:33,460 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:33:33,460 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:33:33,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:33:33,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:33:33,617 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:33:33,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:33:34,304 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-24 00:33:34,304 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:33:34,317 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:33:34,317 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:33:34,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:34 BoogieIcfgContainer [2024-11-24 00:33:34,318 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:33:34,320 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:33:34,320 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:33:34,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:33:34,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:33:32" (1/3) ... [2024-11-24 00:33:34,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d4358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:34, skipping insertion in model container [2024-11-24 00:33:34,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:33:33" (2/3) ... [2024-11-24 00:33:34,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35d4358f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:33:34, skipping insertion in model container [2024-11-24 00:33:34,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:33:34" (3/3) ... [2024-11-24 00:33:34,329 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:33:34,348 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:33:34,350 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i that has 2 procedures, 114 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:33:34,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:33:34,446 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;@60ba2a2a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:33:34,446 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:33:34,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 71 states have internal predecessors, (94), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-24 00:33:34,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:33:34,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:34,476 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:34,477 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:34,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:34,486 INFO L85 PathProgramCache]: Analyzing trace with hash -247435510, now seen corresponding path program 1 times [2024-11-24 00:33:34,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:33:34,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358556794] [2024-11-24 00:33:34,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:34,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:33:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-24 00:33:34,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:33:34,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358556794] [2024-11-24 00:33:34,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358556794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:33:34,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685789572] [2024-11-24 00:33:34,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:34,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:34,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:34,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:33:34,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:33:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:35,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:33:35,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:35,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-24 00:33:35,463 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:33:35,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685789572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:33:35,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:33:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-24 00:33:35,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577254057] [2024-11-24 00:33:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:33:35,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:33:35,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:33:35,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:33:35,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:33:35,495 INFO L87 Difference]: Start difference. First operand has 114 states, 70 states have (on average 1.3428571428571427) internal successors, (94), 71 states have internal predecessors, (94), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:33:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:35,534 INFO L93 Difference]: Finished difference Result 221 states and 387 transitions. [2024-11-24 00:33:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:33:35,536 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) Word has length 258 [2024-11-24 00:33:35,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:35,544 INFO L225 Difference]: With dead ends: 221 [2024-11-24 00:33:35,544 INFO L226 Difference]: Without dead ends: 110 [2024-11-24 00:33:35,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:33:35,551 INFO L435 NwaCegarLoop]: 169 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, 169 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:35,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:33:35,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-24 00:33:35,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-24 00:33:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 67 states have (on average 1.2985074626865671) internal successors, (87), 67 states have internal predecessors, (87), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-24 00:33:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 169 transitions. [2024-11-24 00:33:35,619 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 169 transitions. Word has length 258 [2024-11-24 00:33:35,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:35,619 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 169 transitions. [2024-11-24 00:33:35,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (41), 2 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:33:35,620 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 169 transitions. [2024-11-24 00:33:35,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:33:35,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:35,625 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:35,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:33:35,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:33:35,826 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:35,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:35,827 INFO L85 PathProgramCache]: Analyzing trace with hash -775828672, now seen corresponding path program 1 times [2024-11-24 00:33:35,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:33:35,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562419836] [2024-11-24 00:33:35,827 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:35,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:33:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:33:36,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:33:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562419836] [2024-11-24 00:33:36,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562419836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:33:36,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:33:36,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:33:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915450714] [2024-11-24 00:33:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:33:36,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:33:36,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:33:36,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:33:36,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:33:36,740 INFO L87 Difference]: Start difference. First operand 110 states and 169 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:33:37,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:37,120 INFO L93 Difference]: Finished difference Result 303 states and 459 transitions. [2024-11-24 00:33:37,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:33:37,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 258 [2024-11-24 00:33:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:37,127 INFO L225 Difference]: With dead ends: 303 [2024-11-24 00:33:37,129 INFO L226 Difference]: Without dead ends: 196 [2024-11-24 00:33:37,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:33:37,135 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 197 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:37,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 493 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:33:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-24 00:33:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-24 00:33:37,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 124 states have internal predecessors, (159), 65 states have call successors, (65), 4 states have call predecessors, (65), 4 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2024-11-24 00:33:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 289 transitions. [2024-11-24 00:33:37,216 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 289 transitions. Word has length 258 [2024-11-24 00:33:37,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:37,219 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 289 transitions. [2024-11-24 00:33:37,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:33:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 289 transitions. [2024-11-24 00:33:37,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:33:37,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:37,226 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:37,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:33:37,227 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:37,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:37,228 INFO L85 PathProgramCache]: Analyzing trace with hash -909842178, now seen corresponding path program 1 times [2024-11-24 00:33:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:33:37,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598927733] [2024-11-24 00:33:37,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:33:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:35:55,042 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:35:55,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:35:55,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598927733] [2024-11-24 00:35:55,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598927733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:35:55,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:35:55,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:35:55,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576457022] [2024-11-24 00:35:55,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:35:55,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:35:55,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:35:55,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:35:55,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:35:55,046 INFO L87 Difference]: Start difference. First operand 193 states and 289 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:35:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:35:59,999 INFO L93 Difference]: Finished difference Result 748 states and 1108 transitions. [2024-11-24 00:36:00,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:36:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 258 [2024-11-24 00:36:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:00,007 INFO L225 Difference]: With dead ends: 748 [2024-11-24 00:36:00,007 INFO L226 Difference]: Without dead ends: 558 [2024-11-24 00:36:00,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:36:00,010 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 298 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:00,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 887 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 00:36:00,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-24 00:36:00,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 407. [2024-11-24 00:36:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 268 states have (on average 1.3134328358208955) internal successors, (352), 270 states have internal predecessors, (352), 130 states have call successors, (130), 8 states have call predecessors, (130), 8 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-24 00:36:00,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2024-11-24 00:36:00,086 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 258 [2024-11-24 00:36:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:00,087 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2024-11-24 00:36:00,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:36:00,088 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2024-11-24 00:36:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:36:00,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:00,092 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:00,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:36:00,093 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:00,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1302869188, now seen corresponding path program 1 times [2024-11-24 00:36:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:00,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264731022] [2024-11-24 00:36:00,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:00,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:36:00,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:36:00,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:36:00,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264731022] [2024-11-24 00:36:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264731022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:36:00,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:36:00,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:36:00,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779748886] [2024-11-24 00:36:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:36:00,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:36:00,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:36:00,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:36:00,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:36:00,358 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:36:00,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:36:00,916 INFO L93 Difference]: Finished difference Result 1099 states and 1657 transitions. [2024-11-24 00:36:00,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:36:00,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 258 [2024-11-24 00:36:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:36:00,923 INFO L225 Difference]: With dead ends: 1099 [2024-11-24 00:36:00,923 INFO L226 Difference]: Without dead ends: 695 [2024-11-24 00:36:00,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:36:00,926 INFO L435 NwaCegarLoop]: 177 mSDtfsCounter, 366 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:36:00,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 652 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:36:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-24 00:36:00,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 421. [2024-11-24 00:36:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 282 states have (on average 1.3120567375886525) internal successors, (370), 284 states have internal predecessors, (370), 130 states have call successors, (130), 8 states have call predecessors, (130), 8 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-24 00:36:00,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 630 transitions. [2024-11-24 00:36:00,988 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 630 transitions. Word has length 258 [2024-11-24 00:36:00,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:36:00,989 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 630 transitions. [2024-11-24 00:36:00,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:36:00,989 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 630 transitions. [2024-11-24 00:36:00,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:36:00,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:36:00,993 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:36:00,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:36:00,993 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:36:00,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:36:00,994 INFO L85 PathProgramCache]: Analyzing trace with hash 101275072, now seen corresponding path program 1 times [2024-11-24 00:36:00,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:36:00,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149541048] [2024-11-24 00:36:00,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:36:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:36:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:05,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:42:05,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:05,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149541048] [2024-11-24 00:42:05,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149541048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:05,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:05,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:42:05,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538541425] [2024-11-24 00:42:05,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:05,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:42:05,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:05,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:42:05,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:42:05,178 INFO L87 Difference]: Start difference. First operand 421 states and 630 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:42:07,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:07,501 INFO L93 Difference]: Finished difference Result 1114 states and 1638 transitions. [2024-11-24 00:42:07,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:42:07,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 258 [2024-11-24 00:42:07,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:07,509 INFO L225 Difference]: With dead ends: 1114 [2024-11-24 00:42:07,509 INFO L226 Difference]: Without dead ends: 696 [2024-11-24 00:42:07,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:42:07,517 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 143 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:07,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 686 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-24 00:42:07,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-24 00:42:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 455. [2024-11-24 00:42:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 316 states have (on average 1.3354430379746836) internal successors, (422), 318 states have internal predecessors, (422), 130 states have call successors, (130), 8 states have call predecessors, (130), 8 states have return successors, (130), 128 states have call predecessors, (130), 130 states have call successors, (130) [2024-11-24 00:42:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 682 transitions. [2024-11-24 00:42:07,614 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 682 transitions. Word has length 258 [2024-11-24 00:42:07,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:07,619 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 682 transitions. [2024-11-24 00:42:07,619 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:42:07,620 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 682 transitions. [2024-11-24 00:42:07,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:42:07,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:07,627 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:07,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:42:07,627 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:07,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:07,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1930910532, now seen corresponding path program 1 times [2024-11-24 00:42:07,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:07,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742755276] [2024-11-24 00:42:07,629 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:07,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:42:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:42:08,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:42:08,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742755276] [2024-11-24 00:42:08,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742755276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:42:08,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:42:08,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:42:08,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772214618] [2024-11-24 00:42:08,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:42:08,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:42:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:42:08,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:42:08,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:42:08,019 INFO L87 Difference]: Start difference. First operand 455 states and 682 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:42:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:42:08,580 INFO L93 Difference]: Finished difference Result 1429 states and 2133 transitions. [2024-11-24 00:42:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:42:08,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 258 [2024-11-24 00:42:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:42:08,591 INFO L225 Difference]: With dead ends: 1429 [2024-11-24 00:42:08,592 INFO L226 Difference]: Without dead ends: 977 [2024-11-24 00:42:08,595 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:42:08,597 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 165 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:42:08,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 565 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:42:08,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-24 00:42:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 849. [2024-11-24 00:42:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 572 states have (on average 1.3041958041958042) internal successors, (746), 576 states have internal predecessors, (746), 260 states have call successors, (260), 16 states have call predecessors, (260), 16 states have return successors, (260), 256 states have call predecessors, (260), 260 states have call successors, (260) [2024-11-24 00:42:08,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1266 transitions. [2024-11-24 00:42:08,780 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1266 transitions. Word has length 258 [2024-11-24 00:42:08,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:42:08,782 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1266 transitions. [2024-11-24 00:42:08,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:42:08,783 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1266 transitions. [2024-11-24 00:42:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-24 00:42:08,791 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:42:08,791 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:42:08,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:42:08,792 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:42:08,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:42:08,793 INFO L85 PathProgramCache]: Analyzing trace with hash 935376711, now seen corresponding path program 1 times [2024-11-24 00:42:08,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:42:08,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848723407] [2024-11-24 00:42:08,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:42:08,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:42:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:12,140 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-24 00:43:12,140 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-24 00:43:12,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:43:12,142 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.assertTerm(Scriptor.java:147) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.assertTerm(DiffWrapperScript.java:111) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.assertTerm(WrapperScript.java:158) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:584) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.postprocessInterpolant(NestedInterpolantsBuilder.java:472) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.buildPredicates(NestedInterpolantsBuilder.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:292) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:227) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 50 more [2024-11-24 00:43:12,148 INFO L158 Benchmark]: Toolchain (without parser) took 579527.16ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 90.8MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-24 00:43:12,149 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 40.8MB in the end (delta: 381.7kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:43:12,149 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.76ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 73.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:43:12,150 INFO L158 Benchmark]: Boogie Procedure Inliner took 97.92ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 67.2MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:43:12,150 INFO L158 Benchmark]: Boogie Preprocessor took 132.88ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 56.2MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 00:43:12,150 INFO L158 Benchmark]: RCFGBuilder took 944.70ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 76.2MB in the end (delta: -20.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2024-11-24 00:43:12,151 INFO L158 Benchmark]: TraceAbstraction took 577827.55ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 75.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-24 00:43:12,153 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 83.9MB. Free memory was 41.1MB in the beginning and 40.8MB in the end (delta: 381.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.76ms. Allocated memory is still 117.4MB. Free memory was 90.8MB in the beginning and 73.5MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 97.92ms. Allocated memory is still 117.4MB. Free memory was 73.5MB in the beginning and 67.2MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 132.88ms. Allocated memory is still 117.4MB. Free memory was 67.2MB in the beginning and 56.2MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 944.70ms. Allocated memory is still 117.4MB. Free memory was 56.2MB in the beginning and 76.2MB in the end (delta: -20.0MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 577827.55ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 75.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:43:15,281 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:43:15,450 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 00:43:15,461 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:43:15,462 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:43:15,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:43:15,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:43:15,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:43:15,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:43:15,518 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:43:15,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:43:15,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:43:15,519 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:43:15,519 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:43:15,519 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:43:15,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:43:15,520 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:43:15,520 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:43:15,520 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:43:15,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:43:15,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:43:15,521 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:43:15,522 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:43:15,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:15,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:15,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 00:43:15,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:43:15,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:43:15,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:43:15,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:43:15,524 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 [2024-11-24 00:43:15,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:43:15,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:43:15,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:43:15,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:43:15,961 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:43:15,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:43:19,367 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/08afe2b50/51d5589af88f40be9258857f4b435068/FLAGb93b8c0b5 [2024-11-24 00:43:19,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:43:19,660 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:43:19,672 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/08afe2b50/51d5589af88f40be9258857f4b435068/FLAGb93b8c0b5 [2024-11-24 00:43:19,948 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/data/08afe2b50/51d5589af88f40be9258857f4b435068 [2024-11-24 00:43:19,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:43:19,955 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:43:19,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:43:19,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:43:19,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:43:19,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:43:19" (1/1) ... [2024-11-24 00:43:19,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627b3e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:19, skipping insertion in model container [2024-11-24 00:43:19,970 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:43:19" (1/1) ... [2024-11-24 00:43:20,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:43:20,210 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-24 00:43:20,352 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:43:20,378 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:43:20,391 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_cf7fc505-8f28-43a2-9c78-3b2b112de932/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-24 00:43:20,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:43:20,471 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:43:20,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20 WrapperNode [2024-11-24 00:43:20,472 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:43:20,474 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:43:20,474 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:43:20,474 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:43:20,483 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,498 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,536 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2024-11-24 00:43:20,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:43:20,537 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:43:20,537 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:43:20,537 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:43:20,549 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,555 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,572 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]. [2024-11-24 00:43:20,573 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,573 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,598 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,603 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,623 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:43:20,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:43:20,632 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:43:20,632 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:43:20,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (1/1) ... [2024-11-24 00:43:20,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:43:20,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:43:20,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:43:20,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:43:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:43:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 00:43:20,722 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:43:20,723 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:43:20,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:43:20,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:43:20,880 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:43:20,884 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:43:22,351 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-24 00:43:22,352 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:43:22,371 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:43:22,372 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:43:22,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:22 BoogieIcfgContainer [2024-11-24 00:43:22,373 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:43:22,376 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:43:22,377 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:43:22,384 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:43:22,384 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:43:19" (1/3) ... [2024-11-24 00:43:22,385 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:22, skipping insertion in model container [2024-11-24 00:43:22,385 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:43:20" (2/3) ... [2024-11-24 00:43:22,386 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e0885d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:43:22, skipping insertion in model container [2024-11-24 00:43:22,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:43:22" (3/3) ... [2024-11-24 00:43:22,389 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-24 00:43:22,408 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:43:22,410 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i that has 2 procedures, 107 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:43:22,498 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:43:22,512 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;@5ff6a03f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:43:22,513 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:43:22,518 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-24 00:43:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-24 00:43:22,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:22,540 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:22,540 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:22,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:22,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1449587320, now seen corresponding path program 1 times [2024-11-24 00:43:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:43:22,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683867104] [2024-11-24 00:43:22,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:22,571 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:43:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:43:22,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:43:22,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-24 00:43:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:23,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:43:23,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:23,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2024-11-24 00:43:23,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:43:23,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:43:23,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683867104] [2024-11-24 00:43:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683867104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:23,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:23,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:43:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075197782] [2024-11-24 00:43:23,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:23,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:43:23,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:43:23,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:43:23,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:43:23,510 INFO L87 Difference]: Start difference. First operand has 107 states, 63 states have (on average 1.3333333333333333) internal successors, (84), 64 states have internal predecessors, (84), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:43:23,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:23,576 INFO L93 Difference]: Finished difference Result 207 states and 367 transitions. [2024-11-24 00:43:23,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:43:23,578 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 255 [2024-11-24 00:43:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:23,586 INFO L225 Difference]: With dead ends: 207 [2024-11-24 00:43:23,587 INFO L226 Difference]: Without dead ends: 103 [2024-11-24 00:43:23,592 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:43:23,596 INFO L435 NwaCegarLoop]: 159 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, 159 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:23,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:43:23,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-24 00:43:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-24 00:43:23,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 41 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-24 00:43:23,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 159 transitions. [2024-11-24 00:43:23,650 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 159 transitions. Word has length 255 [2024-11-24 00:43:23,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:23,651 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 159 transitions. [2024-11-24 00:43:23,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) [2024-11-24 00:43:23,651 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 159 transitions. [2024-11-24 00:43:23,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-24 00:43:23,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:23,657 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:23,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-24 00:43:23,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:43:23,858 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:23,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash 152039938, now seen corresponding path program 1 times [2024-11-24 00:43:23,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:43:23,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [72161691] [2024-11-24 00:43:23,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:23,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:43:23,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:43:23,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:43:23,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-24 00:43:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:24,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:43:24,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:43:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-24 00:43:24,765 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:43:24,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:43:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [72161691] [2024-11-24 00:43:24,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [72161691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:43:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:43:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:43:24,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443033606] [2024-11-24 00:43:24,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:43:24,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:43:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:43:24,769 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:43:24,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:43:24,770 INFO L87 Difference]: Start difference. First operand 103 states and 159 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:43:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:43:25,253 INFO L93 Difference]: Finished difference Result 319 states and 488 transitions. [2024-11-24 00:43:25,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:43:25,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) Word has length 255 [2024-11-24 00:43:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:43:25,264 INFO L225 Difference]: With dead ends: 319 [2024-11-24 00:43:25,268 INFO L226 Difference]: Without dead ends: 219 [2024-11-24 00:43:25,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:43:25,270 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 175 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:43:25,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 644 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:43:25,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-24 00:43:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-11-24 00:43:25,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 123 states have (on average 1.2439024390243902) internal successors, (153), 125 states have internal predecessors, (153), 87 states have call successors, (87), 4 states have call predecessors, (87), 4 states have return successors, (87), 85 states have call predecessors, (87), 87 states have call successors, (87) [2024-11-24 00:43:25,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 327 transitions. [2024-11-24 00:43:25,381 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 327 transitions. Word has length 255 [2024-11-24 00:43:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:43:25,386 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 327 transitions. [2024-11-24 00:43:25,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (41), 1 states have call predecessors, (41), 1 states have return successors, (41), 1 states have call predecessors, (41), 1 states have call successors, (41) [2024-11-24 00:43:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 327 transitions. [2024-11-24 00:43:25,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-24 00:43:25,397 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:43:25,397 INFO L218 NwaCegarLoop]: trace histogram [41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:43:25,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-24 00:43:25,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:43:25,598 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:43:25,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:43:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash 574741764, now seen corresponding path program 1 times [2024-11-24 00:43:25,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:43:25,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744348376] [2024-11-24 00:43:25,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:43:25,600 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-24 00:43:25,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:43:25,602 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-24 00:43:25,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf7fc505-8f28-43a2-9c78-3b2b112de932/bin/uautomizer-verify-LYvppIcaGC/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-24 00:43:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:43:26,237 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 00:43:26,265 INFO L279 TraceCheckSpWp]: Computing forward predicates...