./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 d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:01:30,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:01:30,639 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:01:30,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:01:30,645 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:01:30,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:01:30,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:01:30,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:01:30,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:01:30,673 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:01:30,673 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:01:30,673 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:01:30,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:01:30,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:01:30,675 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:01:30,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:01:30,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:01:30,678 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:01:30,678 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:01:30,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:01:30,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:01:30,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:01:30,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:01:30,680 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:01:30,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:01:30,681 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:01:30,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:01:30,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:01:30,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:01:30,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:01:30,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:01:30,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:01:30,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:01:30,682 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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 [2024-11-28 05:01:31,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:01:31,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:01:31,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:01:31,044 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:01:31,044 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:01:31,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:01:34,422 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/d6fb1f921/981259ecabc648078d38d297f6439997/FLAGee99ee42c [2024-11-28 05:01:34,802 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:01:34,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:01:34,821 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/d6fb1f921/981259ecabc648078d38d297f6439997/FLAGee99ee42c [2024-11-28 05:01:34,842 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/d6fb1f921/981259ecabc648078d38d297f6439997 [2024-11-28 05:01:34,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:01:34,846 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:01:34,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:01:34,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:01:34,853 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:01:34,854 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:01:34" (1/1) ... [2024-11-28 05:01:34,855 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a71803a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:34, skipping insertion in model container [2024-11-28 05:01:34,856 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:01:34" (1/1) ... [2024-11-28 05:01:34,890 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:01:35,086 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_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-28 05:01:35,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:01:35,232 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:01:35,248 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_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-28 05:01:35,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:01:35,331 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:01:35,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35 WrapperNode [2024-11-28 05:01:35,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:01:35,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:01:35,334 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:01:35,334 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:01:35,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,355 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,427 INFO L138 Inliner]: procedures = 26, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 254 [2024-11-28 05:01:35,427 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:01:35,428 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:01:35,428 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:01:35,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:01:35,441 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,451 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,507 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]. [2024-11-28 05:01:35,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,509 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,528 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,534 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,541 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,556 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:01:35,558 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:01:35,558 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:01:35,558 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:01:35,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (1/1) ... [2024-11-28 05:01:35,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:01:35,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:35,600 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:01:35,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:01:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:01:35,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:01:35,640 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:01:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:01:35,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:01:35,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:01:35,808 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:01:35,811 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:01:36,573 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-28 05:01:36,573 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:01:36,592 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:01:36,592 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:01:36,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:01:36 BoogieIcfgContainer [2024-11-28 05:01:36,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:01:36,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:01:36,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:01:36,603 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:01:36,603 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:01:34" (1/3) ... [2024-11-28 05:01:36,604 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9a80b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:01:36, skipping insertion in model container [2024-11-28 05:01:36,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:01:35" (2/3) ... [2024-11-28 05:01:36,606 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9a80b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:01:36, skipping insertion in model container [2024-11-28 05:01:36,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:01:36" (3/3) ... [2024-11-28 05:01:36,607 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:01:36,630 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:01:36,633 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. [2024-11-28 05:01:36,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:01:36,745 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;@1a4f0e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:01:36,745 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:01:36,750 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) [2024-11-28 05:01:36,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:01:36,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:36,779 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] [2024-11-28 05:01:36,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:36,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -247435510, now seen corresponding path program 1 times [2024-11-28 05:01:36,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:36,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671802247] [2024-11-28 05:01:36,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-28 05:01:37,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:37,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671802247] [2024-11-28 05:01:37,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671802247] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:01:37,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119812016] [2024-11-28 05:01:37,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:37,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:01:37,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:01:37,377 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:01:37,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:01:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:37,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:01:37,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:01:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 3200 trivial. 0 not checked. [2024-11-28 05:01:37,822 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:01:37,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119812016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:37,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:01:37,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:01:37,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205872017] [2024-11-28 05:01:37,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:37,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:01:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:37,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:01:37,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:01:37,870 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) [2024-11-28 05:01:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:37,927 INFO L93 Difference]: Finished difference Result 221 states and 387 transitions. [2024-11-28 05:01:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:01:37,930 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 [2024-11-28 05:01:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:37,941 INFO L225 Difference]: With dead ends: 221 [2024-11-28 05:01:37,941 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 05:01:37,947 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 [2024-11-28 05:01:37,953 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 [2024-11-28 05:01:37,954 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] [2024-11-28 05:01:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 05:01:38,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-28 05:01:38,030 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) [2024-11-28 05:01:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 169 transitions. [2024-11-28 05:01:38,050 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 169 transitions. Word has length 258 [2024-11-28 05:01:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:38,051 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 169 transitions. [2024-11-28 05:01:38,051 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) [2024-11-28 05:01:38,053 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 169 transitions. [2024-11-28 05:01:38,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:01:38,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:38,064 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] [2024-11-28 05:01:38,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:01:38,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 05:01:38,265 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:38,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:38,266 INFO L85 PathProgramCache]: Analyzing trace with hash -775828672, now seen corresponding path program 1 times [2024-11-28 05:01:38,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:38,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971525437] [2024-11-28 05:01:38,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:38,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:01:39,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:01:39,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:01:39,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971525437] [2024-11-28 05:01:39,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971525437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:01:39,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:01:39,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:01:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875913346] [2024-11-28 05:01:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:01:39,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:01:39,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:01:39,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:01:39,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:01:39,448 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) [2024-11-28 05:01:39,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:01:39,838 INFO L93 Difference]: Finished difference Result 303 states and 459 transitions. [2024-11-28 05:01:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:01:39,843 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 [2024-11-28 05:01:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:01:39,852 INFO L225 Difference]: With dead ends: 303 [2024-11-28 05:01:39,852 INFO L226 Difference]: Without dead ends: 196 [2024-11-28 05:01:39,854 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 [2024-11-28 05:01:39,855 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:01:39,858 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 493 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:01:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-28 05:01:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 193. [2024-11-28 05:01:39,922 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) [2024-11-28 05:01:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 289 transitions. [2024-11-28 05:01:39,929 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 289 transitions. Word has length 258 [2024-11-28 05:01:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:01:39,933 INFO L471 AbstractCegarLoop]: Abstraction has 193 states and 289 transitions. [2024-11-28 05:01:39,933 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) [2024-11-28 05:01:39,934 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 289 transitions. [2024-11-28 05:01:39,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:01:39,945 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:01:39,946 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] [2024-11-28 05:01:39,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:01:39,947 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:01:39,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:01:39,949 INFO L85 PathProgramCache]: Analyzing trace with hash -909842178, now seen corresponding path program 1 times [2024-11-28 05:01:39,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:01:39,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982150004] [2024-11-28 05:01:39,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:01:39,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:01:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:17,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:04:17,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:17,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982150004] [2024-11-28 05:04:17,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982150004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:17,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:17,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 05:04:17,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747551401] [2024-11-28 05:04:17,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:17,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 05:04:17,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:17,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 05:04:17,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:04:17,473 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) [2024-11-28 05:04:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:23,431 INFO L93 Difference]: Finished difference Result 748 states and 1108 transitions. [2024-11-28 05:04:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:04:23,432 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 [2024-11-28 05:04:23,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:23,438 INFO L225 Difference]: With dead ends: 748 [2024-11-28 05:04:23,439 INFO L226 Difference]: Without dead ends: 558 [2024-11-28 05:04:23,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:04:23,445 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 298 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s 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, 3.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:23,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 887 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-28 05:04:23,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-28 05:04:23,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 407. [2024-11-28 05:04:23,544 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) [2024-11-28 05:04:23,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2024-11-28 05:04:23,549 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 258 [2024-11-28 05:04:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:23,550 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2024-11-28 05:04:23,550 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) [2024-11-28 05:04:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2024-11-28 05:04:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:04:23,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:23,558 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] [2024-11-28 05:04:23,558 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:04:23,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:23,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:23,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1302869188, now seen corresponding path program 1 times [2024-11-28 05:04:23,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:23,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333944700] [2024-11-28 05:04:23,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:23,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:23,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:04:23,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:04:23,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:04:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333944700] [2024-11-28 05:04:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333944700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:04:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:04:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:04:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767952435] [2024-11-28 05:04:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:04:23,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:04:23,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:04:23,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:04:23,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:04:23,830 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) [2024-11-28 05:04:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:04:24,418 INFO L93 Difference]: Finished difference Result 1099 states and 1657 transitions. [2024-11-28 05:04:24,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:04:24,419 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 [2024-11-28 05:04:24,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:04:24,427 INFO L225 Difference]: With dead ends: 1099 [2024-11-28 05:04:24,430 INFO L226 Difference]: Without dead ends: 695 [2024-11-28 05:04:24,432 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 [2024-11-28 05:04:24,433 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:04:24,435 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 652 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 05:04:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2024-11-28 05:04:24,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 421. [2024-11-28 05:04:24,523 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) [2024-11-28 05:04:24,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 630 transitions. [2024-11-28 05:04:24,528 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 630 transitions. Word has length 258 [2024-11-28 05:04:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:04:24,531 INFO L471 AbstractCegarLoop]: Abstraction has 421 states and 630 transitions. [2024-11-28 05:04:24,531 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) [2024-11-28 05:04:24,531 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 630 transitions. [2024-11-28 05:04:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:04:24,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:04:24,536 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] [2024-11-28 05:04:24,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:04:24,537 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:04:24,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:04:24,537 INFO L85 PathProgramCache]: Analyzing trace with hash 101275072, now seen corresponding path program 1 times [2024-11-28 05:04:24,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:04:24,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393293468] [2024-11-28 05:04:24,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:04:24,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:04:24,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:11:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:09,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393293468] [2024-11-28 05:11:09,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393293468] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:09,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:09,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:11:09,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908892605] [2024-11-28 05:11:09,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:09,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:11:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:09,854 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:11:09,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:11:09,855 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) [2024-11-28 05:11:12,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:12,186 INFO L93 Difference]: Finished difference Result 1114 states and 1638 transitions. [2024-11-28 05:11:12,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:11:12,187 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 [2024-11-28 05:11:12,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:12,194 INFO L225 Difference]: With dead ends: 1114 [2024-11-28 05:11:12,194 INFO L226 Difference]: Without dead ends: 696 [2024-11-28 05:11:12,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:11:12,199 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 143 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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 [2024-11-28 05:11:12,199 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] [2024-11-28 05:11:12,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2024-11-28 05:11:12,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 455. [2024-11-28 05:11:12,297 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) [2024-11-28 05:11:12,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 682 transitions. [2024-11-28 05:11:12,303 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 682 transitions. Word has length 258 [2024-11-28 05:11:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:12,304 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 682 transitions. [2024-11-28 05:11:12,305 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) [2024-11-28 05:11:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 682 transitions. [2024-11-28 05:11:12,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-28 05:11:12,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:12,313 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] [2024-11-28 05:11:12,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:11:12,315 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:12,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:12,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1930910532, now seen corresponding path program 1 times [2024-11-28 05:11:12,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:12,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777697768] [2024-11-28 05:11:12,320 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:12,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:11:12,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:12,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777697768] [2024-11-28 05:11:12,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777697768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:12,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:11:12,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112808346] [2024-11-28 05:11:12,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:12,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:11:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:12,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:11:12,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:12,724 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) [2024-11-28 05:11:13,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:13,310 INFO L93 Difference]: Finished difference Result 1429 states and 2133 transitions. [2024-11-28 05:11:13,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:11:13,311 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 [2024-11-28 05:11:13,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:13,321 INFO L225 Difference]: With dead ends: 1429 [2024-11-28 05:11:13,321 INFO L226 Difference]: Without dead ends: 977 [2024-11-28 05:11:13,323 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 [2024-11-28 05:11:13,325 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 [2024-11-28 05:11:13,325 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] [2024-11-28 05:11:13,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-28 05:11:13,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 849. [2024-11-28 05:11:13,472 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) [2024-11-28 05:11:13,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1266 transitions. [2024-11-28 05:11:13,485 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1266 transitions. Word has length 258 [2024-11-28 05:11:13,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:13,486 INFO L471 AbstractCegarLoop]: Abstraction has 849 states and 1266 transitions. [2024-11-28 05:11:13,486 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) [2024-11-28 05:11:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1266 transitions. [2024-11-28 05:11:13,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2024-11-28 05:11:13,493 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:13,494 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] [2024-11-28 05:11:13,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:11:13,494 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:13,494 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:13,495 INFO L85 PathProgramCache]: Analyzing trace with hash 935376711, now seen corresponding path program 1 times [2024-11-28 05:11:13,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:13,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385640505] [2024-11-28 05:11:13,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:13,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:17,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-11-28 05:12:17,294 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 05:12:17,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:12:17,295 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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:17,300 INFO L158 Benchmark]: Toolchain (without parser) took 642454.31ms. Allocated memory was 142.6MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 117.9MB in the beginning and 1.1GB in the end (delta: -980.3MB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2024-11-28 05:12:17,300 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:12:17,301 INFO L158 Benchmark]: CACSL2BoogieTranslator took 484.80ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 100.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 05:12:17,301 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.39ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 94.2MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:12:17,301 INFO L158 Benchmark]: Boogie Preprocessor took 127.74ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 83.1MB in the end (delta: 11.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:12:17,302 INFO L158 Benchmark]: RCFGBuilder took 1034.56ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 83.1MB in the beginning and 388.3MB in the end (delta: -305.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. [2024-11-28 05:12:17,302 INFO L158 Benchmark]: TraceAbstraction took 640703.65ms. Allocated memory was 427.8MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 387.7MB in the beginning and 1.1GB in the end (delta: -710.5MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 05:12:17,304 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 142.6MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 484.80ms. Allocated memory is still 142.6MB. Free memory was 117.9MB in the beginning and 100.3MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.39ms. Allocated memory is still 142.6MB. Free memory was 100.3MB in the beginning and 94.2MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 127.74ms. Allocated memory is still 142.6MB. Free memory was 94.2MB in the beginning and 83.1MB in the end (delta: 11.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1034.56ms. Allocated memory was 142.6MB in the beginning and 427.8MB in the end (delta: 285.2MB). Free memory was 83.1MB in the beginning and 388.3MB in the end (delta: -305.2MB). Peak memory consumption was 31.2MB. Max. memory is 16.1GB. * TraceAbstraction took 640703.65ms. Allocated memory was 427.8MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 387.7MB in the beginning and 1.1GB in the end (delta: -710.5MB). 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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:12:19,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:12:20,081 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 05:12:20,091 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:12:20,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:12:20,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:12:20,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:12:20,164 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:12:20,165 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:12:20,165 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:12:20,165 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:12:20,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:12:20,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:12:20,169 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:12:20,169 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:12:20,170 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:12:20,170 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:12:20,171 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:20,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:20,171 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:20,172 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:12:20,172 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:12:20,173 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:12:20,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:12:20,173 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:12:20,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:12:20,173 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_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9ef5ba1706ac871887032b03f34be305eba98b549af8f4e64ec3eb7f553dee0 [2024-11-28 05:12:20,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:12:20,557 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:12:20,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:12:20,561 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:12:20,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:12:20,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:12:23,639 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/bc3a3b727/97cb62c008b446b39d172f4d56680907/FLAG57fcdc0f3 [2024-11-28 05:12:24,075 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:12:24,077 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:12:24,093 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/bc3a3b727/97cb62c008b446b39d172f4d56680907/FLAG57fcdc0f3 [2024-11-28 05:12:24,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/data/bc3a3b727/97cb62c008b446b39d172f4d56680907 [2024-11-28 05:12:24,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:12:24,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:12:24,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:24,259 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:12:24,265 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:12:24,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,269 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd1db4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24, skipping insertion in model container [2024-11-28 05:12:24,270 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,306 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:12:24,503 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_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-28 05:12:24,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:24,644 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:12:24,670 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_d7bb3087-f04b-429b-af70-3f8048146b4c/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-28.i[915,928] [2024-11-28 05:12:24,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:12:24,752 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:12:24,752 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24 WrapperNode [2024-11-28 05:12:24,754 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:12:24,755 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:24,755 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:12:24,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:12:24,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,792 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,836 INFO L138 Inliner]: procedures = 27, calls = 54, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 233 [2024-11-28 05:12:24,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:12:24,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:12:24,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:12:24,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:12:24,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,866 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,893 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]. [2024-11-28 05:12:24,893 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,912 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,913 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,933 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,942 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:12:24,943 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:12:24,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:12:24,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:12:24,947 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (1/1) ... [2024-11-28 05:12:24,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:12:24,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:12:25,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:12:25,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:12:25,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:12:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 05:12:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:12:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:12:25,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:12:25,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:12:25,231 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:12:25,236 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:12:26,330 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-28 05:12:26,330 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:12:26,342 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:12:26,342 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:12:26,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:26 BoogieIcfgContainer [2024-11-28 05:12:26,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:12:26,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:12:26,345 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:12:26,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:12:26,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:12:24" (1/3) ... [2024-11-28 05:12:26,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758a140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:26, skipping insertion in model container [2024-11-28 05:12:26,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:12:24" (2/3) ... [2024-11-28 05:12:26,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6758a140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:12:26, skipping insertion in model container [2024-11-28 05:12:26,354 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:12:26" (3/3) ... [2024-11-28 05:12:26,355 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-28.i [2024-11-28 05:12:26,370 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:12:26,371 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. [2024-11-28 05:12:26,439 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:12:26,451 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;@50f83d3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:12:26,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:12:26,455 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) [2024-11-28 05:12:26,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-28 05:12:26,490 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:26,492 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] [2024-11-28 05:12:26,492 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:26,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1449587320, now seen corresponding path program 1 times [2024-11-28 05:12:26,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:26,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751810573] [2024-11-28 05:12:26,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:26,513 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 [2024-11-28 05:12:26,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 05:12:26,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 05:12:26,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:27,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:12:27,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:27,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 2276 trivial. 0 not checked. [2024-11-28 05:12:27,265 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:27,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:12:27,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751810573] [2024-11-28 05:12:27,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751810573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:27,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:27,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:12:27,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918170465] [2024-11-28 05:12:27,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:27,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:12:27,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:12:27,300 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:12:27,300 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:12:27,304 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) [2024-11-28 05:12:27,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:27,359 INFO L93 Difference]: Finished difference Result 207 states and 367 transitions. [2024-11-28 05:12:27,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:12:27,363 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 [2024-11-28 05:12:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:27,372 INFO L225 Difference]: With dead ends: 207 [2024-11-28 05:12:27,373 INFO L226 Difference]: Without dead ends: 103 [2024-11-28 05:12:27,377 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 [2024-11-28 05:12:27,383 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 [2024-11-28 05:12:27,383 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] [2024-11-28 05:12:27,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-28 05:12:27,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-11-28 05:12:27,438 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) [2024-11-28 05:12:27,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 159 transitions. [2024-11-28 05:12:27,446 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 159 transitions. Word has length 255 [2024-11-28 05:12:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:27,447 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 159 transitions. [2024-11-28 05:12:27,447 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) [2024-11-28 05:12:27,448 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 159 transitions. [2024-11-28 05:12:27,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-28 05:12:27,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:27,453 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] [2024-11-28 05:12:27,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:27,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:27,654 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:27,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 152039938, now seen corresponding path program 1 times [2024-11-28 05:12:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645872220] [2024-11-28 05:12:27,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:27,656 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 [2024-11-28 05:12:27,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 05:12:27,660 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 05:12:27,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:28,158 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:12:28,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:12:28,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3280 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3280 trivial. 0 not checked. [2024-11-28 05:12:28,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:28,326 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:12:28,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645872220] [2024-11-28 05:12:28,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645872220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:28,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:28,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:12:28,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368003839] [2024-11-28 05:12:28,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:28,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:12:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:12:28,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:12:28,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:12:28,333 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) [2024-11-28 05:12:28,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:12:28,691 INFO L93 Difference]: Finished difference Result 319 states and 488 transitions. [2024-11-28 05:12:28,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:12:28,692 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 [2024-11-28 05:12:28,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:12:28,701 INFO L225 Difference]: With dead ends: 319 [2024-11-28 05:12:28,701 INFO L226 Difference]: Without dead ends: 219 [2024-11-28 05:12:28,702 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 [2024-11-28 05:12:28,703 INFO L435 NwaCegarLoop]: 320 mSDtfsCounter, 175 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2024-11-28 05:12:28,706 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] [2024-11-28 05:12:28,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-28 05:12:28,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2024-11-28 05:12:28,757 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) [2024-11-28 05:12:28,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 327 transitions. [2024-11-28 05:12:28,761 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 327 transitions. Word has length 255 [2024-11-28 05:12:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:12:28,762 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 327 transitions. [2024-11-28 05:12:28,763 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) [2024-11-28 05:12:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 327 transitions. [2024-11-28 05:12:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2024-11-28 05:12:28,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:12:28,768 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] [2024-11-28 05:12:28,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:28,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:28,969 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:12:28,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:12:28,969 INFO L85 PathProgramCache]: Analyzing trace with hash 574741764, now seen corresponding path program 1 times [2024-11-28 05:12:28,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:12:28,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611467008] [2024-11-28 05:12:28,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:12:28,970 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 [2024-11-28 05:12:28,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 05:12:28,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 05:12:28,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7bb3087-f04b-429b-af70-3f8048146b4c/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 05:12:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:12:29,547 INFO L256 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 05:12:29,562 INFO L279 TraceCheckSpWp]: Computing forward predicates...