./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.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_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/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_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/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_95f5768e-f936-4119-9dd2-abdb1cbdaa77/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 47cd392676bec39dae7770de53e22dff9d81be51a0efae6a4b87035607bdf0b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:30:55,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:30:55,651 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:30:55,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:30:55,656 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:30:55,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:30:55,680 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:30:55,681 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:30:55,681 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:30:55,681 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:30:55,681 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:30:55,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:30:55,682 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:30:55,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:30:55,682 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:30:55,682 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:30:55,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:30:55,682 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:30:55,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:30:55,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:30:55,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:30:55,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:30:55,684 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:30:55,684 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:30:55,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:30:55,685 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_95f5768e-f936-4119-9dd2-abdb1cbdaa77/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 -> 47cd392676bec39dae7770de53e22dff9d81be51a0efae6a4b87035607bdf0b5 [2024-12-02 14:30:55,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:30:55,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:30:55,933 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:30:55,934 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:30:55,935 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:30:55,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.i [2024-12-02 14:30:58,934 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/data/dae5d0c0c/5080b44092f041908106cad61e6a9776/FLAG7e80fc8af [2024-12-02 14:30:59,193 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:30:59,194 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.i [2024-12-02 14:30:59,206 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/data/dae5d0c0c/5080b44092f041908106cad61e6a9776/FLAG7e80fc8af [2024-12-02 14:30:59,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/data/dae5d0c0c/5080b44092f041908106cad61e6a9776 [2024-12-02 14:30:59,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:30:59,502 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:30:59,503 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:30:59,503 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:30:59,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:30:59,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,510 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43ef55ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59, skipping insertion in model container [2024-12-02 14:30:59,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:30:59,670 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.i[915,928] [2024-12-02 14:30:59,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:30:59,721 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:30:59,731 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_95f5768e-f936-4119-9dd2-abdb1cbdaa77/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount50_file-64.i[915,928] [2024-12-02 14:30:59,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:30:59,776 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:30:59,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59 WrapperNode [2024-12-02 14:30:59,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:30:59,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:30:59,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:30:59,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:30:59,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,794 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,822 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 173 [2024-12-02 14:30:59,822 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:30:59,823 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:30:59,823 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:30:59,823 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:30:59,834 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,852 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 14:30:59,852 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,858 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,859 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,863 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,865 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,866 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:30:59,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:30:59,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:30:59,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:30:59,871 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (1/1) ... [2024-12-02 14:30:59,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:30:59,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:30:59,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:30:59,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:30:59,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:30:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:30:59,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:30:59,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:31:00,023 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:31:00,026 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:31:00,341 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-12-02 14:31:00,342 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:31:00,353 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:31:00,354 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 14:31:00,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:00 BoogieIcfgContainer [2024-12-02 14:31:00,354 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:31:00,357 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:31:00,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:31:00,362 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:31:00,363 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:30:59" (1/3) ... [2024-12-02 14:31:00,363 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0219bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:00, skipping insertion in model container [2024-12-02 14:31:00,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:30:59" (2/3) ... [2024-12-02 14:31:00,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f0219bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:31:00, skipping insertion in model container [2024-12-02 14:31:00,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:31:00" (3/3) ... [2024-12-02 14:31:00,365 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount50_file-64.i [2024-12-02 14:31:00,383 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:31:00,384 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount50_file-64.i that has 2 procedures, 75 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 14:31:00,434 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:31:00,448 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;@ce9b2a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:31:00,448 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:31:00,452 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 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 14:31:00,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 14:31:00,464 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:00,464 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] [2024-12-02 14:31:00,465 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:00,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:00,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1472419692, now seen corresponding path program 1 times [2024-12-02 14:31:00,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:00,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034070476] [2024-12-02 14:31:00,477 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:00,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:00,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:00,763 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 14:31:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034070476] [2024-12-02 14:31:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034070476] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:31:00,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411973635] [2024-12-02 14:31:00,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:00,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:31:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:31:00,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:31:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:31:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:00,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:31:00,939 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:31:00,969 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 14:31:00,969 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:31:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411973635] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:00,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:31:00,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:31:00,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435412162] [2024-12-02 14:31:00,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:00,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:31:00,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:00,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:31:00,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:31:00,997 INFO L87 Difference]: Start difference. First operand has 75 states, 46 states have (on average 1.3695652173913044) internal successors, (63), 47 states have internal predecessors, (63), 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 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 14:31:01,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:01,027 INFO L93 Difference]: Finished difference Result 143 states and 250 transitions. [2024-12-02 14:31:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:31:01,029 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 163 [2024-12-02 14:31:01,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:01,035 INFO L225 Difference]: With dead ends: 143 [2024-12-02 14:31:01,036 INFO L226 Difference]: Without dead ends: 71 [2024-12-02 14:31:01,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 164 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 14:31:01,041 INFO L435 NwaCegarLoop]: 108 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, 108 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 14:31:01,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:31:01,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-12-02 14:31:01,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-12-02 14:31:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.302325581395349) internal successors, (56), 43 states have internal predecessors, (56), 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 14:31:01,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 108 transitions. [2024-12-02 14:31:01,083 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 108 transitions. Word has length 163 [2024-12-02 14:31:01,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:01,084 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 108 transitions. [2024-12-02 14:31:01,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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 14:31:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 108 transitions. [2024-12-02 14:31:01,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 14:31:01,088 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:01,088 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] [2024-12-02 14:31:01,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:31:01,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95f5768e-f936-4119-9dd2-abdb1cbdaa77/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:31:01,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:01,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -688375340, now seen corresponding path program 1 times [2024-12-02 14:31:01,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:01,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885947428] [2024-12-02 14:31:01,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:05,301 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 14:31:05,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:05,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885947428] [2024-12-02 14:31:05,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885947428] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:05,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:05,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:31:05,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120068440] [2024-12-02 14:31:05,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:05,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:31:05,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:05,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:31:05,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:31:05,304 INFO L87 Difference]: Start difference. First operand 71 states and 108 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 14:31:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:05,774 INFO L93 Difference]: Finished difference Result 247 states and 378 transitions. [2024-12-02 14:31:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:31:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 163 [2024-12-02 14:31:05,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:05,777 INFO L225 Difference]: With dead ends: 247 [2024-12-02 14:31:05,778 INFO L226 Difference]: Without dead ends: 179 [2024-12-02 14:31:05,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:05,779 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 128 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:05,779 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 464 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:31:05,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-12-02 14:31:05,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 75. [2024-12-02 14:31:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 47 states have (on average 1.3191489361702127) internal successors, (62), 47 states have internal predecessors, (62), 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 14:31:05,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 114 transitions. [2024-12-02 14:31:05,796 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 114 transitions. Word has length 163 [2024-12-02 14:31:05,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:05,797 INFO L471 AbstractCegarLoop]: Abstraction has 75 states and 114 transitions. [2024-12-02 14:31:05,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 14:31:05,798 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 114 transitions. [2024-12-02 14:31:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2024-12-02 14:31:05,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:05,800 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] [2024-12-02 14:31:05,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:31:05,800 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:05,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash -171222316, now seen corresponding path program 1 times [2024-12-02 14:31:05,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:05,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113030117] [2024-12-02 14:31:05,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:05,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:07,861 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 14:31:07,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:07,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113030117] [2024-12-02 14:31:07,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113030117] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:07,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:07,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:31:07,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012906922] [2024-12-02 14:31:07,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:07,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:31:07,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:07,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:31:07,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:31:07,863 INFO L87 Difference]: Start difference. First operand 75 states and 114 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 14:31:08,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:08,133 INFO L93 Difference]: Finished difference Result 206 states and 313 transitions. [2024-12-02 14:31:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:31:08,133 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 163 [2024-12-02 14:31:08,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:08,134 INFO L225 Difference]: With dead ends: 206 [2024-12-02 14:31:08,135 INFO L226 Difference]: Without dead ends: 134 [2024-12-02 14:31:08,135 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:08,136 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 109 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:08,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 567 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:31:08,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-12-02 14:31:08,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 71. [2024-12-02 14:31:08,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 43 states have internal predecessors, (55), 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 14:31:08,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 107 transitions. [2024-12-02 14:31:08,143 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 107 transitions. Word has length 163 [2024-12-02 14:31:08,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:08,144 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 107 transitions. [2024-12-02 14:31:08,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 14:31:08,144 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 107 transitions. [2024-12-02 14:31:08,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:31:08,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:08,145 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] [2024-12-02 14:31:08,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:31:08,146 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:08,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:08,146 INFO L85 PathProgramCache]: Analyzing trace with hash -652193233, now seen corresponding path program 1 times [2024-12-02 14:31:08,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:08,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078635703] [2024-12-02 14:31:08,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:08,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:31:13,495 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 14:31:13,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:31:13,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078635703] [2024-12-02 14:31:13,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078635703] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:31:13,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:31:13,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:31:13,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64831128] [2024-12-02 14:31:13,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:31:13,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:31:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:31:13,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:31:13,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:31:13,497 INFO L87 Difference]: Start difference. First operand 71 states and 107 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 14:31:14,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:31:14,664 INFO L93 Difference]: Finished difference Result 315 states and 450 transitions. [2024-12-02 14:31:14,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:31:14,665 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 165 [2024-12-02 14:31:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:31:14,668 INFO L225 Difference]: With dead ends: 315 [2024-12-02 14:31:14,668 INFO L226 Difference]: Without dead ends: 247 [2024-12-02 14:31:14,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:31:14,670 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 298 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:31:14,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 327 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 14:31:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-12-02 14:31:14,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 171. [2024-12-02 14:31:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 120 states have (on average 1.3416666666666666) internal successors, (161), 123 states have internal predecessors, (161), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 43 states have call predecessors, (46), 46 states have call successors, (46) [2024-12-02 14:31:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 253 transitions. [2024-12-02 14:31:14,714 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 253 transitions. Word has length 165 [2024-12-02 14:31:14,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:31:14,714 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 253 transitions. [2024-12-02 14:31:14,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 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 14:31:14,715 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 253 transitions. [2024-12-02 14:31:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:31:14,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:31:14,717 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] [2024-12-02 14:31:14,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:31:14,718 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:31:14,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:31:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1045220243, now seen corresponding path program 1 times [2024-12-02 14:31:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:31:14,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917351994] [2024-12-02 14:31:14,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:31:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:31:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:18,640 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 14:41:18,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:18,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917351994] [2024-12-02 14:41:18,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917351994] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:41:18,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:41:18,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-12-02 14:41:18,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184381331] [2024-12-02 14:41:18,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:41:18,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 14:41:18,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:41:18,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 14:41:18,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:41:18,642 INFO L87 Difference]: Start difference. First operand 171 states and 253 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 14:41:24,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:41:24,438 INFO L93 Difference]: Finished difference Result 275 states and 394 transitions. [2024-12-02 14:41:24,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:41:24,439 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 165 [2024-12-02 14:41:24,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:41:24,441 INFO L225 Difference]: With dead ends: 275 [2024-12-02 14:41:24,442 INFO L226 Difference]: Without dead ends: 273 [2024-12-02 14:41:24,442 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:41:24,442 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 158 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:41:24,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 524 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-12-02 14:41:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2024-12-02 14:41:24,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 226. [2024-12-02 14:41:24,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 165 states have (on average 1.3515151515151516) internal successors, (223), 169 states have internal predecessors, (223), 54 states have call successors, (54), 6 states have call predecessors, (54), 6 states have return successors, (54), 50 states have call predecessors, (54), 54 states have call successors, (54) [2024-12-02 14:41:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 331 transitions. [2024-12-02 14:41:24,500 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 331 transitions. Word has length 165 [2024-12-02 14:41:24,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:41:24,501 INFO L471 AbstractCegarLoop]: Abstraction has 226 states and 331 transitions. [2024-12-02 14:41:24,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 14:41:24,501 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 331 transitions. [2024-12-02 14:41:24,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2024-12-02 14:41:24,503 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:41:24,503 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] [2024-12-02 14:41:24,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:41:24,503 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:41:24,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:41:24,504 INFO L85 PathProgramCache]: Analyzing trace with hash -787054805, now seen corresponding path program 1 times [2024-12-02 14:41:24,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:41:24,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278041536] [2024-12-02 14:41:24,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat