./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1 --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 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:47:21,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:47:21,627 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 12:47:21,632 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:47:21,633 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:47:21,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:47:21,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:47:21,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:47:21,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:47:21,656 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:47:21,656 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:47:21,656 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:47:21,657 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:47:21,657 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:47:21,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:47:21,658 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:21,658 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:21,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:21,659 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:47:21,659 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:47:21,660 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 [2024-12-02 12:47:21,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:47:21,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:47:21,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:47:21,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:47:21,908 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:47:21,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:47:24,619 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/7bcf6e9e8/5adc32c917fa4199a83c2b0bcd4ca4d0/FLAGbb60a8ab3 [2024-12-02 12:47:24,895 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:47:24,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:47:24,907 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/7bcf6e9e8/5adc32c917fa4199a83c2b0bcd4ca4d0/FLAGbb60a8ab3 [2024-12-02 12:47:25,213 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/7bcf6e9e8/5adc32c917fa4199a83c2b0bcd4ca4d0 [2024-12-02 12:47:25,215 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:47:25,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:47:25,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:25,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:47:25,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:47:25,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78fb692e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25, skipping insertion in model container [2024-12-02 12:47:25,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:47:25,350 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-12-02 12:47:25,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:25,437 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:47:25,445 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-12-02 12:47:25,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:47:25,495 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:47:25,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25 WrapperNode [2024-12-02 12:47:25,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:47:25,496 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:25,496 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:47:25,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:47:25,501 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,552 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 231 [2024-12-02 12:47:25,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:47:25,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:47:25,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:47:25,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:47:25,564 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,569 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,592 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]. [2024-12-02 12:47:25,592 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,604 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:47:25,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:47:25,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:47:25,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:47:25,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (1/1) ... [2024-12-02 12:47:25,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:47:25,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:25,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:47:25,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:47:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:47:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:47:25,680 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:47:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:47:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:47:25,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:47:25,747 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:47:25,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:47:26,164 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-12-02 12:47:26,165 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:47:26,175 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:47:26,175 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:47:26,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:47:26 BoogieIcfgContainer [2024-12-02 12:47:26,175 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:47:26,177 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:47:26,178 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:47:26,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:47:26,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:47:25" (1/3) ... [2024-12-02 12:47:26,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432549f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:47:26, skipping insertion in model container [2024-12-02 12:47:26,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:47:25" (2/3) ... [2024-12-02 12:47:26,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432549f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:47:26, skipping insertion in model container [2024-12-02 12:47:26,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:47:26" (3/3) ... [2024-12-02 12:47:26,184 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:47:26,199 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:47:26,202 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:47:26,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:47:26,268 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;@7dbc2ee3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:47:26,269 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:47:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:47:26,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:47:26,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:26,283 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:26,283 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:26,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:26,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1342870241, now seen corresponding path program 1 times [2024-12-02 12:47:26,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:26,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749442592] [2024-12-02 12:47:26,294 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:26,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:26,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-02 12:47:26,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749442592] [2024-12-02 12:47:26,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749442592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:47:26,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723201757] [2024-12-02 12:47:26,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:47:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:47:26,586 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:47:26,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:47:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:26,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:47:26,763 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:47:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2024-12-02 12:47:26,787 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:47:26,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723201757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:26,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:47:26,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 12:47:26,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630918113] [2024-12-02 12:47:26,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:26,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:47:26,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:26,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:47:26,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:47:26,812 INFO L87 Difference]: Start difference. First operand has 99 states, 70 states have (on average 1.457142857142857) internal successors, (102), 71 states have internal predecessors, (102), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:47:26,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:26,834 INFO L93 Difference]: Finished difference Result 191 states and 328 transitions. [2024-12-02 12:47:26,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:47:26,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-12-02 12:47:26,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:26,840 INFO L225 Difference]: With dead ends: 191 [2024-12-02 12:47:26,840 INFO L226 Difference]: Without dead ends: 95 [2024-12-02 12:47:26,843 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:47:26,846 INFO L435 NwaCegarLoop]: 147 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, 147 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 [2024-12-02 12:47:26,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:47:26,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-02 12:47:26,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-02 12:47:26,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.4179104477611941) internal successors, (95), 67 states have internal predecessors, (95), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:47:26,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 147 transitions. [2024-12-02 12:47:26,889 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 147 transitions. Word has length 176 [2024-12-02 12:47:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:26,889 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 147 transitions. [2024-12-02 12:47:26,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:47:26,889 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 147 transitions. [2024-12-02 12:47:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:47:26,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:26,893 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:26,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:47:27,094 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 12:47:27,094 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:27,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:27,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1502417511, now seen corresponding path program 1 times [2024-12-02 12:47:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:27,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738543080] [2024-12-02 12:47:27,095 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:27,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:27,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:47:27,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:47:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:47:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738543080] [2024-12-02 12:47:27,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738543080] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:47:27,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:47:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:47:27,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668874307] [2024-12-02 12:47:27,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:47:27,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:47:27,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:47:27,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:47:27,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:47:27,410 INFO L87 Difference]: Start difference. First operand 95 states and 147 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:47:27,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:47:27,442 INFO L93 Difference]: Finished difference Result 188 states and 293 transitions. [2024-12-02 12:47:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:47:27,443 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-02 12:47:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:47:27,445 INFO L225 Difference]: With dead ends: 188 [2024-12-02 12:47:27,445 INFO L226 Difference]: Without dead ends: 96 [2024-12-02 12:47:27,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:47:27,446 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:47:27,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 286 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:47:27,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-12-02 12:47:27,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-12-02 12:47:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.411764705882353) internal successors, (96), 68 states have internal predecessors, (96), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:47:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 148 transitions. [2024-12-02 12:47:27,457 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 148 transitions. Word has length 176 [2024-12-02 12:47:27,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:47:27,459 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 148 transitions. [2024-12-02 12:47:27,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:47:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 148 transitions. [2024-12-02 12:47:27,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:47:27,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:47:27,462 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:47:27,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:47:27,462 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:47:27,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:47:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash 987111451, now seen corresponding path program 1 times [2024-12-02 12:47:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:47:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452938826] [2024-12-02 12:47:27,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:47:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:47:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:49:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452938826] [2024-12-02 12:49:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452938826] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:49:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:49:16,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895576914] [2024-12-02 12:49:16,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:16,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:49:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:16,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:49:16,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:49:16,051 INFO L87 Difference]: Start difference. First operand 96 states and 148 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:49:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:18,325 INFO L93 Difference]: Finished difference Result 425 states and 639 transitions. [2024-12-02 12:49:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:49:18,326 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-12-02 12:49:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:18,329 INFO L225 Difference]: With dead ends: 425 [2024-12-02 12:49:18,329 INFO L226 Difference]: Without dead ends: 332 [2024-12-02 12:49:18,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:49:18,331 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 822 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:18,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 922 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 12:49:18,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-12-02 12:49:18,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 233. [2024-12-02 12:49:18,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 169 states have (on average 1.4201183431952662) internal successors, (240), 170 states have internal predecessors, (240), 60 states have call successors, (60), 3 states have call predecessors, (60), 3 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 12:49:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 360 transitions. [2024-12-02 12:49:18,366 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 360 transitions. Word has length 176 [2024-12-02 12:49:18,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:18,367 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 360 transitions. [2024-12-02 12:49:18,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:49:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 360 transitions. [2024-12-02 12:49:18,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:49:18,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:18,370 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:18,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 12:49:18,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:18,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:18,371 INFO L85 PathProgramCache]: Analyzing trace with hash 594084441, now seen corresponding path program 1 times [2024-12-02 12:49:18,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:18,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729200042] [2024-12-02 12:49:18,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:18,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:49:18,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:49:18,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:49:18,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729200042] [2024-12-02 12:49:18,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729200042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:49:18,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:49:18,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:49:18,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439540325] [2024-12-02 12:49:18,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:49:18,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:49:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:49:18,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:49:18,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:49:18,511 INFO L87 Difference]: Start difference. First operand 233 states and 360 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:49:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:49:18,791 INFO L93 Difference]: Finished difference Result 614 states and 945 transitions. [2024-12-02 12:49:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:49:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-02 12:49:18,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:49:18,797 INFO L225 Difference]: With dead ends: 614 [2024-12-02 12:49:18,797 INFO L226 Difference]: Without dead ends: 397 [2024-12-02 12:49:18,798 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 [2024-12-02 12:49:18,798 INFO L435 NwaCegarLoop]: 155 mSDtfsCounter, 415 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:49:18,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 564 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:49:18,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-12-02 12:49:18,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 296. [2024-12-02 12:49:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 204 states have (on average 1.3627450980392157) internal successors, (278), 206 states have internal predecessors, (278), 86 states have call successors, (86), 5 states have call predecessors, (86), 5 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 12:49:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 450 transitions. [2024-12-02 12:49:18,840 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 450 transitions. Word has length 176 [2024-12-02 12:49:18,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:49:18,841 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 450 transitions. [2024-12-02 12:49:18,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:49:18,841 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 450 transitions. [2024-12-02 12:49:18,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:49:18,843 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:49:18,844 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:49:18,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 12:49:18,844 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:49:18,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:49:18,844 INFO L85 PathProgramCache]: Analyzing trace with hash -24005799, now seen corresponding path program 1 times [2024-12-02 12:49:18,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:49:18,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421657363] [2024-12-02 12:49:18,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:49:18,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:49:18,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:54:25,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:25,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421657363] [2024-12-02 12:54:25,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421657363] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:25,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:25,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-12-02 12:54:25,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793483280] [2024-12-02 12:54:25,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:25,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:54:25,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:25,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:54:25,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:54:25,608 INFO L87 Difference]: Start difference. First operand 296 states and 450 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:54:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:38,077 INFO L93 Difference]: Finished difference Result 909 states and 1323 transitions. [2024-12-02 12:54:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 12:54:38,078 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2024-12-02 12:54:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:38,081 INFO L225 Difference]: With dead ends: 909 [2024-12-02 12:54:38,081 INFO L226 Difference]: Without dead ends: 629 [2024-12-02 12:54:38,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=330, Invalid=930, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 12:54:38,083 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 1417 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1417 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:38,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1417 Valid, 1080 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 12:54:38,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2024-12-02 12:54:38,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 335. [2024-12-02 12:54:38,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 243 states have (on average 1.4156378600823045) internal successors, (344), 245 states have internal predecessors, (344), 86 states have call successors, (86), 5 states have call predecessors, (86), 5 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 12:54:38,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 516 transitions. [2024-12-02 12:54:38,132 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 516 transitions. Word has length 176 [2024-12-02 12:54:38,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:38,132 INFO L471 AbstractCegarLoop]: Abstraction has 335 states and 516 transitions. [2024-12-02 12:54:38,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 16 states have internal predecessors, (49), 2 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:54:38,133 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 516 transitions. [2024-12-02 12:54:38,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:54:38,135 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:38,135 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:54:38,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 12:54:38,135 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash -33956903, now seen corresponding path program 1 times [2024-12-02 12:54:38,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:38,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604454772] [2024-12-02 12:54:38,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:38,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:54:38,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:54:38,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:54:38,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604454772] [2024-12-02 12:54:38,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604454772] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:54:38,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:54:38,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 12:54:38,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789574859] [2024-12-02 12:54:38,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:54:38,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:54:38,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:54:38,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:54:38,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:54:38,305 INFO L87 Difference]: Start difference. First operand 335 states and 516 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:54:38,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:54:38,619 INFO L93 Difference]: Finished difference Result 1024 states and 1567 transitions. [2024-12-02 12:54:38,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:54:38,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-02 12:54:38,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:54:38,626 INFO L225 Difference]: With dead ends: 1024 [2024-12-02 12:54:38,626 INFO L226 Difference]: Without dead ends: 705 [2024-12-02 12:54:38,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:54:38,629 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 162 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:54:38,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 540 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 12:54:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2024-12-02 12:54:38,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 589. [2024-12-02 12:54:38,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 442 states have (on average 1.4276018099547512) internal successors, (631), 444 states have internal predecessors, (631), 138 states have call successors, (138), 8 states have call predecessors, (138), 8 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-12-02 12:54:38,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 907 transitions. [2024-12-02 12:54:38,701 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 907 transitions. Word has length 176 [2024-12-02 12:54:38,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:54:38,702 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 907 transitions. [2024-12-02 12:54:38,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:54:38,702 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 907 transitions. [2024-12-02 12:54:38,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-12-02 12:54:38,705 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:54:38,705 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:54:38,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 12:54:38,706 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:54:38,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:54:38,706 INFO L85 PathProgramCache]: Analyzing trace with hash 38033815, now seen corresponding path program 1 times [2024-12-02 12:54:38,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:54:38,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667034076] [2024-12-02 12:54:38,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:54:38,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:54:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:57:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked. [2024-12-02 12:57:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:57:06,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667034076] [2024-12-02 12:57:06,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667034076] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:57:06,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:57:06,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 12:57:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66214971] [2024-12-02 12:57:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:57:06,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:57:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:57:06,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:57:06,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-12-02 12:57:06,855 INFO L87 Difference]: Start difference. First operand 589 states and 907 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:57:12,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:57:12,185 INFO L93 Difference]: Finished difference Result 1319 states and 1999 transitions. [2024-12-02 12:57:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 12:57:12,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 176 [2024-12-02 12:57:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:57:12,189 INFO L225 Difference]: With dead ends: 1319 [2024-12-02 12:57:12,189 INFO L226 Difference]: Without dead ends: 746 [2024-12-02 12:57:12,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:57:12,192 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 528 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:57:12,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 1071 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1143 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-02 12:57:12,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-12-02 12:57:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 503. [2024-12-02 12:57:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 356 states have (on average 1.3764044943820224) internal successors, (490), 358 states have internal predecessors, (490), 138 states have call successors, (138), 8 states have call predecessors, (138), 8 states have return successors, (138), 136 states have call predecessors, (138), 138 states have call successors, (138) [2024-12-02 12:57:12,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 766 transitions. [2024-12-02 12:57:12,250 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 766 transitions. Word has length 176 [2024-12-02 12:57:12,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:57:12,250 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 766 transitions. [2024-12-02 12:57:12,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-12-02 12:57:12,251 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 766 transitions. [2024-12-02 12:57:12,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 12:57:12,252 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:57:12,252 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:57:12,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 12:57:12,252 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:57:12,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:57:12,253 INFO L85 PathProgramCache]: Analyzing trace with hash -388602913, now seen corresponding path program 1 times [2024-12-02 12:57:12,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:57:12,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533006318] [2024-12-02 12:57:12,253 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:57:12,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:57:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:35,462 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-02 12:58:35,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-02 12:58:35,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 12:58:35,463 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:590) 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) ... 58 more [2024-12-02 12:58:35,467 INFO L158 Benchmark]: Toolchain (without parser) took 670250.86ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 116.8MB in the beginning and 955.2MB in the end (delta: -838.4MB). Peak memory consumption was 897.8MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,467 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:58:35,468 INFO L158 Benchmark]: CACSL2BoogieTranslator took 277.76ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 99.5MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,468 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.50ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 92.6MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,468 INFO L158 Benchmark]: Boogie Preprocessor took 74.20ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 80.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,469 INFO L158 Benchmark]: RCFGBuilder took 547.76ms. Allocated memory is still 142.6MB. Free memory was 80.4MB in the beginning and 105.8MB in the end (delta: -25.3MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,469 INFO L158 Benchmark]: TraceAbstraction took 669289.29ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 105.1MB in the beginning and 955.2MB in the end (delta: -850.1MB). Peak memory consumption was 882.6MB. Max. memory is 16.1GB. [2024-12-02 12:58:35,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 142.6MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 277.76ms. Allocated memory is still 142.6MB. Free memory was 116.8MB in the beginning and 99.5MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.50ms. Allocated memory is still 142.6MB. Free memory was 99.5MB in the beginning and 92.6MB in the end (delta: 6.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 74.20ms. Allocated memory is still 142.6MB. Free memory was 92.6MB in the beginning and 80.4MB in the end (delta: 12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 547.76ms. Allocated memory is still 142.6MB. Free memory was 80.4MB in the beginning and 105.8MB in the end (delta: -25.3MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * TraceAbstraction took 669289.29ms. Allocated memory was 142.6MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 105.1MB in the beginning and 955.2MB in the end (delta: -850.1MB). Peak memory consumption was 882.6MB. 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1 --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 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:58:37,204 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:58:37,277 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 12:58:37,286 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:58:37,286 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:58:37,309 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:58:37,310 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:58:37,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:58:37,310 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:58:37,310 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:58:37,310 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:58:37,311 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:58:37,311 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:58:37,311 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:58:37,311 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:58:37,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:58:37,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:58:37,313 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:58:37,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:58:37,313 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:58:37,314 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 12:58:37,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:58:37,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:58:37,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:58:37,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:58:37,315 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7dfe522f0a384c779a53f1bd35f55e4b7314ed62dfa7b4a6975b7f74f7995e77 [2024-12-02 12:58:37,555 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:58:37,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:58:37,564 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:58:37,565 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:58:37,565 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:58:37,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:58:40,196 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/192b62871/51bea10ebd19437896220eafc34eaf07/FLAG3c61e999e [2024-12-02 12:58:40,423 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:58:40,424 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:58:40,432 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/192b62871/51bea10ebd19437896220eafc34eaf07/FLAG3c61e999e [2024-12-02 12:58:40,775 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/data/192b62871/51bea10ebd19437896220eafc34eaf07 [2024-12-02 12:58:40,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:58:40,777 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:58:40,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:58:40,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:58:40,781 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:58:40,782 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:40" (1/1) ... [2024-12-02 12:58:40,782 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75c65c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:40, skipping insertion in model container [2024-12-02 12:58:40,782 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:58:40" (1/1) ... [2024-12-02 12:58:40,796 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:58:40,910 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-12-02 12:58:40,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:58:40,975 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:58:40,983 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_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i[919,932] [2024-12-02 12:58:41,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:58:41,031 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:58:41,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41 WrapperNode [2024-12-02 12:58:41,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:58:41,032 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:58:41,033 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:58:41,033 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:58:41,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,047 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,069 INFO L138 Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 195 [2024-12-02 12:58:41,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:58:41,070 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:58:41,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:58:41,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:58:41,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,079 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,088 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]. [2024-12-02 12:58:41,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,099 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,100 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,103 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,105 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,106 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,108 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:58:41,109 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:58:41,109 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:58:41,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:58:41,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (1/1) ... [2024-12-02 12:58:41,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:58:41,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:58:41,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:58:41,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:58:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:58:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 12:58:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 12:58:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 12:58:41,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:58:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:58:41,244 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:58:41,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:58:42,420 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-12-02 12:58:42,420 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:58:42,429 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:58:42,429 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:58:42,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:58:42 BoogieIcfgContainer [2024-12-02 12:58:42,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:58:42,432 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:58:42,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:58:42,437 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:58:42,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:58:40" (1/3) ... [2024-12-02 12:58:42,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223cc5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:58:42, skipping insertion in model container [2024-12-02 12:58:42,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:58:41" (2/3) ... [2024-12-02 12:58:42,438 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223cc5b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:58:42, skipping insertion in model container [2024-12-02 12:58:42,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:58:42" (3/3) ... [2024-12-02 12:58:42,439 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i [2024-12-02 12:58:42,449 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:58:42,451 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-28.i that has 2 procedures, 87 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 12:58:42,492 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:58:42,501 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;@7bd3df31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:58:42,501 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 12:58:42,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:58:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 12:58:42,513 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:42,514 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:42,514 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:42,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:42,518 INFO L85 PathProgramCache]: Analyzing trace with hash 352520966, now seen corresponding path program 1 times [2024-12-02 12:58:42,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:58:42,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128991671] [2024-12-02 12:58:42,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:42,528 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 [2024-12-02 12:58:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 12:58:42,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 12:58:42,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 12:58:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:42,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:58:42,873 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:58:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 554 proven. 0 refuted. 0 times theorem prover too weak. 746 trivial. 0 not checked. [2024-12-02 12:58:42,912 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:58:42,913 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:58:42,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128991671] [2024-12-02 12:58:42,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128991671] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:58:42,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:58:42,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:58:42,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556511095] [2024-12-02 12:58:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:58:42,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:58:42,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:58:42,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:58:42,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:58:42,939 INFO L87 Difference]: Start difference. First operand has 87 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 59 states have internal predecessors, (84), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:58:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:58:42,965 INFO L93 Difference]: Finished difference Result 167 states and 292 transitions. [2024-12-02 12:58:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:58:42,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2024-12-02 12:58:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:58:42,973 INFO L225 Difference]: With dead ends: 167 [2024-12-02 12:58:42,974 INFO L226 Difference]: Without dead ends: 83 [2024-12-02 12:58:42,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:58:42,979 INFO L435 NwaCegarLoop]: 128 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, 128 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 [2024-12-02 12:58:42,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 12:58:42,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-12-02 12:58:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-12-02 12:58:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 55 states have internal predecessors, (76), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2024-12-02 12:58:43,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 128 transitions. [2024-12-02 12:58:43,019 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 128 transitions. Word has length 172 [2024-12-02 12:58:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:58:43,019 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 128 transitions. [2024-12-02 12:58:43,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.5) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 12:58:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 128 transitions. [2024-12-02 12:58:43,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2024-12-02 12:58:43,023 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:58:43,023 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:58:43,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 12:58:43,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 12:58:43,224 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 12:58:43,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:58:43,225 INFO L85 PathProgramCache]: Analyzing trace with hash 985214588, now seen corresponding path program 1 times [2024-12-02 12:58:43,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:58:43,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099114653] [2024-12-02 12:58:43,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:58:43,226 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 [2024-12-02 12:58:43,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 12:58:43,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 12:58:43,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d1bdeab-e2a6-49d2-9dd3-a5da7dd8e6fe/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 12:58:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:58:43,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 12:58:43,582 INFO L279 TraceCheckSpWp]: Computing forward predicates...