./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 52bbdb7a41796c9d1c42151e2a189c74de125cfeae86983365ab22d3ff48a0ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 18:38:17,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 18:38:17,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 18:38:17,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 18:38:17,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 18:38:17,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 18:38:17,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 18:38:17,673 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 18:38:17,673 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 18:38:17,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 18:38:17,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 18:38:17,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 18:38:17,674 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 18:38:17,674 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 18:38:17,674 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 18:38:17,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 18:38:17,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 18:38:17,676 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:38:17,676 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:38:17,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 18:38:17,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 18:38:17,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 18:38:17,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 18:38:17,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:38:17,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 18:38:17,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 18:38:17,678 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 18:38:17,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 18:38:17,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 18:38:17,680 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_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 52bbdb7a41796c9d1c42151e2a189c74de125cfeae86983365ab22d3ff48a0ac [2024-11-23 18:38:18,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 18:38:18,046 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 18:38:18,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 18:38:18,052 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 18:38:18,053 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 18:38:18,054 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i [2024-11-23 18:38:21,381 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/data/2562d878b/527803f0473b491caf7ca01c71b392a4/FLAGa776a488b [2024-11-23 18:38:21,661 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 18:38:21,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i [2024-11-23 18:38:21,674 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/data/2562d878b/527803f0473b491caf7ca01c71b392a4/FLAGa776a488b [2024-11-23 18:38:21,698 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/data/2562d878b/527803f0473b491caf7ca01c71b392a4 [2024-11-23 18:38:21,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 18:38:21,703 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 18:38:21,704 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 18:38:21,705 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 18:38:21,708 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 18:38:21,709 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:38:21" (1/1) ... [2024-11-23 18:38:21,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c85d3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:21, skipping insertion in model container [2024-11-23 18:38:21,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:38:21" (1/1) ... [2024-11-23 18:38:21,727 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 18:38:21,895 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_8fcd042f-e2e1-499e-8817-b9d7618b6202/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i[915,928] [2024-11-23 18:38:21,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:38:21,987 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 18:38:21,999 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_8fcd042f-e2e1-499e-8817-b9d7618b6202/sv-benchmarks/c/hardness-nfm22/hardness_loopvsstraightlinecode_25-while_file-44.i[915,928] [2024-11-23 18:38:22,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 18:38:22,063 INFO L204 MainTranslator]: Completed translation [2024-11-23 18:38:22,063 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22 WrapperNode [2024-11-23 18:38:22,064 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 18:38:22,065 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 18:38:22,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 18:38:22,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 18:38:22,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,084 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,117 INFO L138 Inliner]: procedures = 26, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 135 [2024-11-23 18:38:22,118 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 18:38:22,118 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 18:38:22,118 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 18:38:22,118 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 18:38:22,129 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,133 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,147 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 18:38:22,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,147 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,153 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 18:38:22,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 18:38:22,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 18:38:22,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 18:38:22,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (1/1) ... [2024-11-23 18:38:22,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 18:38:22,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:22,206 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 18:38:22,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 18:38:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 18:38:22,241 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 18:38:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 18:38:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 18:38:22,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 18:38:22,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 18:38:22,322 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 18:38:22,324 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 18:38:22,649 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-23 18:38:22,649 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 18:38:22,659 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 18:38:22,659 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 18:38:22,659 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:38:22 BoogieIcfgContainer [2024-11-23 18:38:22,660 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 18:38:22,662 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 18:38:22,662 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 18:38:22,668 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 18:38:22,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:38:21" (1/3) ... [2024-11-23 18:38:22,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cb0bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:38:22, skipping insertion in model container [2024-11-23 18:38:22,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:38:22" (2/3) ... [2024-11-23 18:38:22,669 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28cb0bc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:38:22, skipping insertion in model container [2024-11-23 18:38:22,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:38:22" (3/3) ... [2024-11-23 18:38:22,670 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_loopvsstraightlinecode_25-while_file-44.i [2024-11-23 18:38:22,687 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 18:38:22,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_loopvsstraightlinecode_25-while_file-44.i that has 2 procedures, 63 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-23 18:38:22,749 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 18:38:22,765 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;@1b311d7d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 18:38:22,766 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 18:38:22,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-23 18:38:22,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 18:38:22,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:22,787 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:22,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:22,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1935860085, now seen corresponding path program 1 times [2024-11-23 18:38:22,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798110082] [2024-11-23 18:38:22,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:22,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:23,234 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-23 18:38:23,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798110082] [2024-11-23 18:38:23,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798110082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 18:38:23,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960899999] [2024-11-23 18:38:23,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:23,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:23,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 18:38:23,240 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 18:38:23,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 18:38:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:23,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 18:38:23,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 18:38:23,497 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2024-11-23 18:38:23,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 18:38:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960899999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:23,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 18:38:23,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 18:38:23,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063586356] [2024-11-23 18:38:23,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:23,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 18:38:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:23,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 18:38:23,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:38:23,539 INFO L87 Difference]: Start difference. First operand has 63 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:23,574 INFO L93 Difference]: Finished difference Result 119 states and 201 transitions. [2024-11-23 18:38:23,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 18:38:23,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) Word has length 132 [2024-11-23 18:38:23,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:23,585 INFO L225 Difference]: With dead ends: 119 [2024-11-23 18:38:23,585 INFO L226 Difference]: Without dead ends: 59 [2024-11-23 18:38:23,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 18:38:23,595 INFO L435 NwaCegarLoop]: 86 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, 86 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:23,596 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 18:38:23,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-23 18:38:23,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-23 18:38:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 36 states have internal predecessors, (44), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-23 18:38:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 86 transitions. [2024-11-23 18:38:23,641 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 86 transitions. Word has length 132 [2024-11-23 18:38:23,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:23,643 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 86 transitions. [2024-11-23 18:38:23,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.0) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 18:38:23,645 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 86 transitions. [2024-11-23 18:38:23,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 18:38:23,652 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:23,652 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:23,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 18:38:23,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8fcd042f-e2e1-499e-8817-b9d7618b6202/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 18:38:23,856 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:23,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:23,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1851365367, now seen corresponding path program 1 times [2024-11-23 18:38:23,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:23,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829482508] [2024-11-23 18:38:23,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:23,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:38:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:38:36,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:38:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829482508] [2024-11-23 18:38:36,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829482508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:38:36,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:38:36,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:38:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804668319] [2024-11-23 18:38:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:38:36,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:38:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:38:36,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:38:36,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:38:36,395 INFO L87 Difference]: Start difference. First operand 59 states and 86 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:38:38,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:38:38,048 INFO L93 Difference]: Finished difference Result 182 states and 258 transitions. [2024-11-23 18:38:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:38:38,050 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 132 [2024-11-23 18:38:38,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:38:38,052 INFO L225 Difference]: With dead ends: 182 [2024-11-23 18:38:38,052 INFO L226 Difference]: Without dead ends: 126 [2024-11-23 18:38:38,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:38:38,054 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 117 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:38:38,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 606 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:38:38,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-23 18:38:38,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 82. [2024-11-23 18:38:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 52 states have internal predecessors, (62), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:38:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 118 transitions. [2024-11-23 18:38:38,091 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 118 transitions. Word has length 132 [2024-11-23 18:38:38,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:38:38,092 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 118 transitions. [2024-11-23 18:38:38,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:38:38,092 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 118 transitions. [2024-11-23 18:38:38,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-23 18:38:38,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:38:38,095 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:38:38,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 18:38:38,095 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:38:38,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:38:38,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2109530805, now seen corresponding path program 1 times [2024-11-23 18:38:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:38:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141871340] [2024-11-23 18:38:38,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:38:38,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:38:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:03,061 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:40:03,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:03,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141871340] [2024-11-23 18:40:03,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141871340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:03,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:03,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 18:40:03,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229984760] [2024-11-23 18:40:03,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:03,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 18:40:03,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:03,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 18:40:03,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-23 18:40:03,064 INFO L87 Difference]: Start difference. First operand 82 states and 118 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:04,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:04,075 INFO L93 Difference]: Finished difference Result 168 states and 237 transitions. [2024-11-23 18:40:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 18:40:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 132 [2024-11-23 18:40:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:04,078 INFO L225 Difference]: With dead ends: 168 [2024-11-23 18:40:04,078 INFO L226 Difference]: Without dead ends: 100 [2024-11-23 18:40:04,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 18:40:04,080 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 68 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:04,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 319 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 18:40:04,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-23 18:40:04,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2024-11-23 18:40:04,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 50 states have internal predecessors, (59), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:40:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2024-11-23 18:40:04,116 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 132 [2024-11-23 18:40:04,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:04,116 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2024-11-23 18:40:04,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2024-11-23 18:40:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:40:04,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:04,119 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:04,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 18:40:04,120 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:04,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash 406852919, now seen corresponding path program 1 times [2024-11-23 18:40:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:04,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703089140] [2024-11-23 18:40:04,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:40:10,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703089140] [2024-11-23 18:40:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703089140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:10,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:40:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420950875] [2024-11-23 18:40:10,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:10,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:40:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:10,904 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:40:10,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:40:10,904 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:12,412 INFO L93 Difference]: Finished difference Result 215 states and 297 transitions. [2024-11-23 18:40:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:40:12,416 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 133 [2024-11-23 18:40:12,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:12,425 INFO L225 Difference]: With dead ends: 215 [2024-11-23 18:40:12,425 INFO L226 Difference]: Without dead ends: 149 [2024-11-23 18:40:12,426 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:40:12,427 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 133 mSDsluCounter, 529 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:12,428 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 633 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-23 18:40:12,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-23 18:40:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 83. [2024-11-23 18:40:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 53 states have internal predecessors, (64), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:40:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2024-11-23 18:40:12,462 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 133 [2024-11-23 18:40:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:12,462 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2024-11-23 18:40:12,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2024-11-23 18:40:12,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:40:12,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:12,465 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:12,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 18:40:12,466 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:12,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash 13825909, now seen corresponding path program 1 times [2024-11-23 18:40:12,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:12,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463880157] [2024-11-23 18:40:12,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:12,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:40:19,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:19,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463880157] [2024-11-23 18:40:19,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463880157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:19,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:19,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:40:19,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056074608] [2024-11-23 18:40:19,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:19,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:40:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:19,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:40:19,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:40:19,742 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:21,465 INFO L93 Difference]: Finished difference Result 201 states and 281 transitions. [2024-11-23 18:40:21,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:40:21,466 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 133 [2024-11-23 18:40:21,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:21,468 INFO L225 Difference]: With dead ends: 201 [2024-11-23 18:40:21,468 INFO L226 Difference]: Without dead ends: 132 [2024-11-23 18:40:21,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:40:21,469 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 117 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:21,470 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 733 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-23 18:40:21,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-23 18:40:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 83. [2024-11-23 18:40:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 53 states have internal predecessors, (64), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:40:21,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2024-11-23 18:40:21,503 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 133 [2024-11-23 18:40:21,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:21,504 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2024-11-23 18:40:21,504 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:21,504 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2024-11-23 18:40:21,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:40:21,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:21,506 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:21,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 18:40:21,507 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:21,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:21,507 INFO L85 PathProgramCache]: Analyzing trace with hash -179953095, now seen corresponding path program 1 times [2024-11-23 18:40:21,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:21,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379174904] [2024-11-23 18:40:21,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:21,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:40:22,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:22,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379174904] [2024-11-23 18:40:22,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379174904] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:22,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:22,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:40:22,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721717560] [2024-11-23 18:40:22,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:22,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:40:22,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:22,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:40:22,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-23 18:40:22,520 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:23,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:23,092 INFO L93 Difference]: Finished difference Result 212 states and 293 transitions. [2024-11-23 18:40:23,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:40:23,093 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 133 [2024-11-23 18:40:23,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:23,094 INFO L225 Difference]: With dead ends: 212 [2024-11-23 18:40:23,094 INFO L226 Difference]: Without dead ends: 143 [2024-11-23 18:40:23,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:40:23,096 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 132 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:23,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 491 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 18:40:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-23 18:40:23,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 83. [2024-11-23 18:40:23,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 53 states have internal predecessors, (64), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:40:23,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 120 transitions. [2024-11-23 18:40:23,126 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 120 transitions. Word has length 133 [2024-11-23 18:40:23,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:23,127 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 120 transitions. [2024-11-23 18:40:23,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:23,127 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 120 transitions. [2024-11-23 18:40:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2024-11-23 18:40:23,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:23,129 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:23,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 18:40:23,129 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:23,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:23,129 INFO L85 PathProgramCache]: Analyzing trace with hash -572980105, now seen corresponding path program 1 times [2024-11-23 18:40:23,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:23,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960922923] [2024-11-23 18:40:23,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:23,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:40:24,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:40:24,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960922923] [2024-11-23 18:40:24,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960922923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:40:24,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:40:24,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 18:40:24,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656890185] [2024-11-23 18:40:24,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:40:24,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 18:40:24,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:40:24,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 18:40:24,110 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-23 18:40:24,110 INFO L87 Difference]: Start difference. First operand 83 states and 120 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:24,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 18:40:24,976 INFO L93 Difference]: Finished difference Result 195 states and 272 transitions. [2024-11-23 18:40:24,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 18:40:24,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 133 [2024-11-23 18:40:24,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 18:40:24,980 INFO L225 Difference]: With dead ends: 195 [2024-11-23 18:40:24,980 INFO L226 Difference]: Without dead ends: 126 [2024-11-23 18:40:24,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 18:40:24,982 INFO L435 NwaCegarLoop]: 140 mSDtfsCounter, 102 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-23 18:40:24,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 771 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-23 18:40:24,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-23 18:40:25,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 74. [2024-11-23 18:40:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 28 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 27 states have call predecessors, (28), 28 states have call successors, (28) [2024-11-23 18:40:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2024-11-23 18:40:25,020 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 133 [2024-11-23 18:40:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 18:40:25,021 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2024-11-23 18:40:25,021 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:40:25,021 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2024-11-23 18:40:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 18:40:25,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 18:40:25,023 INFO L218 NwaCegarLoop]: trace histogram [21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 18:40:25,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 18:40:25,023 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 18:40:25,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 18:40:25,024 INFO L85 PathProgramCache]: Analyzing trace with hash 497200914, now seen corresponding path program 1 times [2024-11-23 18:40:25,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 18:40:25,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767087410] [2024-11-23 18:40:25,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 18:40:25,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 18:40:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 18:40:39,771 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:40:47,788 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:40:55,804 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:41:03,820 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:41:43,269 WARN L286 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:41:51,287 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:41:59,303 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:08,765 WARN L286 SmtUtils]: Spent 5.43s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:16,829 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:24,844 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:32,864 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:40,881 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:42:56,952 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:43:09,915 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:43:32,584 WARN L286 SmtUtils]: Spent 21.10s on a formula simplification. DAG size of input: 61 DAG size of output: 58 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:43:52,397 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:04,421 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:12,436 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:20,458 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:39,219 WARN L286 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:51,247 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:44:59,258 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:45:07,271 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:45:15,282 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:45:35,967 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:45:53,196 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:46:01,494 WARN L286 SmtUtils]: Spent 8.30s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:46:31,844 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:46:43,868 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:48:10,837 WARN L286 SmtUtils]: Spent 1.30m on a formula simplification. DAG size of input: 82 DAG size of output: 63 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:48:38,277 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:48:46,289 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:49:01,954 WARN L286 SmtUtils]: Spent 7.05s on a formula simplification that was a NOOP. DAG size: 15 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:49:14,089 WARN L286 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:49:22,100 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:49:47,273 WARN L286 SmtUtils]: Spent 6.26s on a formula simplification that was a NOOP. DAG size: 14 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:49:55,291 WARN L286 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:50:03,302 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:50:11,315 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:50:34,296 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-23 18:52:00,806 WARN L286 SmtUtils]: Spent 1.18m on a formula simplification. DAG size of input: 81 DAG size of output: 61 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-23 18:52:15,563 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2024-11-23 18:52:15,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 18:52:15,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767087410] [2024-11-23 18:52:15,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767087410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 18:52:15,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 18:52:15,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-23 18:52:15,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584350737] [2024-11-23 18:52:15,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 18:52:15,564 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 18:52:15,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 18:52:15,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 18:52:15,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=54, Unknown=3, NotChecked=0, Total=72 [2024-11-23 18:52:15,564 INFO L87 Difference]: Start difference. First operand 74 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 1 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2024-11-23 18:52:19,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:23,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:26,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:30,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:32,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:33,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:38,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2024-11-23 18:52:41,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []