./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c --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_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/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_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/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_743b3497-4397-4091-8f56-0a035a71e39a/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 aba75d5c6112bb80051134ed7f98fd80207b53da5b894be601f1f010079e2e6e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:07:15,743 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:07:15,813 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:07:15,819 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:07:15,820 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:07:15,848 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:07:15,848 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:07:15,849 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:07:15,849 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:07:15,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:07:15,849 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:07:15,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:07:15,850 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:07:15,850 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:07:15,850 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:07:15,850 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:07:15,851 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:07:15,851 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:07:15,851 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:07:15,851 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:07:15,851 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:07:15,852 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:07:15,853 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:07:15,853 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:07:15,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:07:15,853 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:07:15,853 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:07:15,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:15,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:07:15,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:07:15,854 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:07:15,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:07:15,854 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:15,855 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:07:15,855 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:07:15,855 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:07:15,855 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:07:15,855 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:07:15,855 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:07:15,856 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:07:15,856 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:07:15,856 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:07:15,856 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:07:15,856 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_743b3497-4397-4091-8f56-0a035a71e39a/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 -> aba75d5c6112bb80051134ed7f98fd80207b53da5b894be601f1f010079e2e6e [2024-11-24 00:07:16,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:07:16,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:07:16,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:07:16,178 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:07:16,178 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:07:16,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-24 00:07:19,521 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/data/4145516b9/c9df96bef27e4d61a53604459e038314/FLAG517192bb1 [2024-11-24 00:07:19,864 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:07:19,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-24 00:07:19,885 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/data/4145516b9/c9df96bef27e4d61a53604459e038314/FLAG517192bb1 [2024-11-24 00:07:20,124 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/data/4145516b9/c9df96bef27e4d61a53604459e038314 [2024-11-24 00:07:20,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:07:20,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:07:20,130 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:07:20,130 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:07:20,136 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:07:20,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f022c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20, skipping insertion in model container [2024-11-24 00:07:20,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:07:20,539 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_743b3497-4397-4091-8f56-0a035a71e39a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2024-11-24 00:07:20,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:07:20,563 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:07:20,664 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_743b3497-4397-4091-8f56-0a035a71e39a/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c[9488,9501] [2024-11-24 00:07:20,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:07:20,701 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:07:20,702 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20 WrapperNode [2024-11-24 00:07:20,703 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:07:20,704 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:07:20,704 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:07:20,705 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:07:20,715 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,725 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,762 INFO L138 Inliner]: procedures = 24, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 314 [2024-11-24 00:07:20,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:07:20,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:07:20,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:07:20,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:07:20,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,814 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-24 00:07:20,815 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,815 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,833 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,834 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,844 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,846 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:07:20,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:07:20,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:07:20,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:07:20,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (1/1) ... [2024-11-24 00:07:20,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:07:20,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:20,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:07:20,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:07:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:07:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:07:20,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:07:20,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:07:21,083 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:07:21,085 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:07:21,835 INFO L? ?]: Removed 39 outVars from TransFormulas that were not future-live. [2024-11-24 00:07:21,835 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:07:21,850 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:07:21,850 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:07:21,851 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:21 BoogieIcfgContainer [2024-11-24 00:07:21,854 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:07:21,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:07:21,857 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:07:21,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:07:21,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:07:20" (1/3) ... [2024-11-24 00:07:21,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dca51d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:21, skipping insertion in model container [2024-11-24 00:07:21,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:07:20" (2/3) ... [2024-11-24 00:07:21,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dca51d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:07:21, skipping insertion in model container [2024-11-24 00:07:21,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:07:21" (3/3) ... [2024-11-24 00:07:21,867 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c [2024-11-24 00:07:21,886 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:07:21,889 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr-var-start-time.4.ufo.UNBOUNDED.pals.c that has 1 procedures, 86 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:07:21,963 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:07:21,976 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;@72113b7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:07:21,977 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:07:21,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:22,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-24 00:07:22,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:22,009 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:22,010 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:22,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:22,015 INFO L85 PathProgramCache]: Analyzing trace with hash -182548282, now seen corresponding path program 1 times [2024-11-24 00:07:22,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:22,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786172763] [2024-11-24 00:07:22,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:22,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:22,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:22,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:22,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786172763] [2024-11-24 00:07:22,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786172763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:22,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:22,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:07:22,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487501810] [2024-11-24 00:07:22,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:22,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:07:22,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:22,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:07:22,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:07:22,462 INFO L87 Difference]: Start difference. First operand has 86 states, 84 states have (on average 1.7261904761904763) internal successors, (145), 85 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:22,484 INFO L93 Difference]: Finished difference Result 139 states and 233 transitions. [2024-11-24 00:07:22,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:07:22,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-24 00:07:22,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:22,495 INFO L225 Difference]: With dead ends: 139 [2024-11-24 00:07:22,495 INFO L226 Difference]: Without dead ends: 82 [2024-11-24 00:07:22,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:07:22,502 INFO L435 NwaCegarLoop]: 138 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, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:22,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:22,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-24 00:07:22,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-24 00:07:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.7037037037037037) internal successors, (138), 81 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 138 transitions. [2024-11-24 00:07:22,548 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 138 transitions. Word has length 29 [2024-11-24 00:07:22,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:22,549 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 138 transitions. [2024-11-24 00:07:22,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 138 transitions. [2024-11-24 00:07:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-24 00:07:22,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:22,551 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:22,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:07:22,552 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:22,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:22,553 INFO L85 PathProgramCache]: Analyzing trace with hash -316561788, now seen corresponding path program 1 times [2024-11-24 00:07:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084266996] [2024-11-24 00:07:22,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:22,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:22,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:22,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084266996] [2024-11-24 00:07:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084266996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:22,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:22,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:07:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339972969] [2024-11-24 00:07:22,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:22,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:07:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:22,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:07:22,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:07:22,957 INFO L87 Difference]: Start difference. First operand 82 states and 138 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:23,091 INFO L93 Difference]: Finished difference Result 138 states and 226 transitions. [2024-11-24 00:07:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:07:23,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-24 00:07:23,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:23,093 INFO L225 Difference]: With dead ends: 138 [2024-11-24 00:07:23,093 INFO L226 Difference]: Without dead ends: 82 [2024-11-24 00:07:23,094 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:07:23,095 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 0 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:23,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 515 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-24 00:07:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-24 00:07:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 81 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 114 transitions. [2024-11-24 00:07:23,109 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 114 transitions. Word has length 29 [2024-11-24 00:07:23,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:23,111 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 114 transitions. [2024-11-24 00:07:23,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,112 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 114 transitions. [2024-11-24 00:07:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:07:23,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:23,115 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:23,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:07:23,117 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:23,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:23,117 INFO L85 PathProgramCache]: Analyzing trace with hash 672474749, now seen corresponding path program 1 times [2024-11-24 00:07:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:23,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648323126] [2024-11-24 00:07:23,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:23,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:23,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:23,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648323126] [2024-11-24 00:07:23,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648323126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:23,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:23,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:23,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106948261] [2024-11-24 00:07:23,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:23,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:23,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:23,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:23,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:23,389 INFO L87 Difference]: Start difference. First operand 82 states and 114 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:23,443 INFO L93 Difference]: Finished difference Result 178 states and 268 transitions. [2024-11-24 00:07:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:23,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-24 00:07:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:23,445 INFO L225 Difference]: With dead ends: 178 [2024-11-24 00:07:23,445 INFO L226 Difference]: Without dead ends: 126 [2024-11-24 00:07:23,446 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:23,447 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 60 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:23,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 219 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:23,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-24 00:07:23,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-24 00:07:23,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.4796747967479675) internal successors, (182), 123 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-24 00:07:23,470 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 52 [2024-11-24 00:07:23,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:23,473 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-24 00:07:23,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:23,474 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-24 00:07:23,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-24 00:07:23,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:23,475 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:23,475 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:07:23,475 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:23,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash -221780930, now seen corresponding path program 1 times [2024-11-24 00:07:23,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:23,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621241002] [2024-11-24 00:07:23,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:23,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:23,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:23,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621241002] [2024-11-24 00:07:23,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621241002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:23,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:23,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:07:23,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843571920] [2024-11-24 00:07:23,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:23,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:07:23,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:23,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:07:23,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:23,835 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:24,021 INFO L93 Difference]: Finished difference Result 594 states and 942 transitions. [2024-11-24 00:07:24,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:24,022 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-24 00:07:24,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:24,027 INFO L225 Difference]: With dead ends: 594 [2024-11-24 00:07:24,027 INFO L226 Difference]: Without dead ends: 500 [2024-11-24 00:07:24,028 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:24,029 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 664 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:24,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 606 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:24,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-11-24 00:07:24,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 216. [2024-11-24 00:07:24,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.5302325581395348) internal successors, (329), 215 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 329 transitions. [2024-11-24 00:07:24,067 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 329 transitions. Word has length 52 [2024-11-24 00:07:24,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:24,068 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 329 transitions. [2024-11-24 00:07:24,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,068 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 329 transitions. [2024-11-24 00:07:24,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-24 00:07:24,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:24,075 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:24,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:07:24,076 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:24,077 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:24,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1331402393, now seen corresponding path program 1 times [2024-11-24 00:07:24,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:24,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581552514] [2024-11-24 00:07:24,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:24,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:24,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:24,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:24,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581552514] [2024-11-24 00:07:24,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581552514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:24,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:24,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:07:24,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147063201] [2024-11-24 00:07:24,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:24,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:07:24,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:24,616 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:07:24,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:24,619 INFO L87 Difference]: Start difference. First operand 216 states and 329 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:24,713 INFO L93 Difference]: Finished difference Result 230 states and 346 transitions. [2024-11-24 00:07:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:07:24,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2024-11-24 00:07:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:24,717 INFO L225 Difference]: With dead ends: 230 [2024-11-24 00:07:24,717 INFO L226 Difference]: Without dead ends: 228 [2024-11-24 00:07:24,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:07:24,720 INFO L435 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:24,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 744 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-24 00:07:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2024-11-24 00:07:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.502202643171806) internal successors, (341), 227 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 341 transitions. [2024-11-24 00:07:24,753 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 341 transitions. Word has length 53 [2024-11-24 00:07:24,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:24,753 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 341 transitions. [2024-11-24 00:07:24,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,754 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 341 transitions. [2024-11-24 00:07:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:07:24,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:24,756 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:24,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:07:24,756 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:24,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:24,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1623620234, now seen corresponding path program 1 times [2024-11-24 00:07:24,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:24,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286316611] [2024-11-24 00:07:24,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:24,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:24,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:24,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286316611] [2024-11-24 00:07:24,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286316611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:24,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:24,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:24,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530895502] [2024-11-24 00:07:24,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:24,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:24,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:24,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:24,942 INFO L87 Difference]: Start difference. First operand 228 states and 341 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:24,991 INFO L93 Difference]: Finished difference Result 594 states and 913 transitions. [2024-11-24 00:07:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:24,992 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:07:24,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:24,994 INFO L225 Difference]: With dead ends: 594 [2024-11-24 00:07:24,997 INFO L226 Difference]: Without dead ends: 396 [2024-11-24 00:07:24,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:24,999 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:25,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 190 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-24 00:07:25,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 390. [2024-11-24 00:07:25,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 1.5141388174807198) internal successors, (589), 389 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 589 transitions. [2024-11-24 00:07:25,036 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 589 transitions. Word has length 54 [2024-11-24 00:07:25,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:25,037 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 589 transitions. [2024-11-24 00:07:25,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,037 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 589 transitions. [2024-11-24 00:07:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:07:25,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:25,046 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:25,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:07:25,046 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:25,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1627419246, now seen corresponding path program 1 times [2024-11-24 00:07:25,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:25,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670157144] [2024-11-24 00:07:25,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:25,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:25,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670157144] [2024-11-24 00:07:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670157144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:25,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:25,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293821540] [2024-11-24 00:07:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:25,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:25,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:25,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,157 INFO L87 Difference]: Start difference. First operand 390 states and 589 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:25,208 INFO L93 Difference]: Finished difference Result 1046 states and 1595 transitions. [2024-11-24 00:07:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:25,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 00:07:25,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:25,212 INFO L225 Difference]: With dead ends: 1046 [2024-11-24 00:07:25,212 INFO L226 Difference]: Without dead ends: 686 [2024-11-24 00:07:25,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,214 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 64 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:25,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 233 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2024-11-24 00:07:25,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 684. [2024-11-24 00:07:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.5036603221083455) internal successors, (1027), 683 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1027 transitions. [2024-11-24 00:07:25,261 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1027 transitions. Word has length 55 [2024-11-24 00:07:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:25,261 INFO L471 AbstractCegarLoop]: Abstraction has 684 states and 1027 transitions. [2024-11-24 00:07:25,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1027 transitions. [2024-11-24 00:07:25,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:07:25,263 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:25,263 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:25,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:07:25,264 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:25,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1310378098, now seen corresponding path program 1 times [2024-11-24 00:07:25,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:25,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918469268] [2024-11-24 00:07:25,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:25,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:25,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:25,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918469268] [2024-11-24 00:07:25,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918469268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:25,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:25,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:25,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335358324] [2024-11-24 00:07:25,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:25,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:25,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:25,394 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:25,394 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,394 INFO L87 Difference]: Start difference. First operand 684 states and 1027 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:25,455 INFO L93 Difference]: Finished difference Result 1864 states and 2797 transitions. [2024-11-24 00:07:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-24 00:07:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:25,464 INFO L225 Difference]: With dead ends: 1864 [2024-11-24 00:07:25,464 INFO L226 Difference]: Without dead ends: 1210 [2024-11-24 00:07:25,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,466 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 68 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:25,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 246 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:25,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2024-11-24 00:07:25,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1208. [2024-11-24 00:07:25,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 1207 states have (on average 1.4772162386081193) internal successors, (1783), 1207 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1783 transitions. [2024-11-24 00:07:25,560 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1783 transitions. Word has length 55 [2024-11-24 00:07:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:25,560 INFO L471 AbstractCegarLoop]: Abstraction has 1208 states and 1783 transitions. [2024-11-24 00:07:25,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1783 transitions. [2024-11-24 00:07:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:07:25,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:25,563 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:25,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:07:25,564 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:25,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:25,564 INFO L85 PathProgramCache]: Analyzing trace with hash -223123120, now seen corresponding path program 1 times [2024-11-24 00:07:25,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:25,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811152504] [2024-11-24 00:07:25,564 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:25,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:25,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:25,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811152504] [2024-11-24 00:07:25,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811152504] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:25,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:25,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:25,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509511570] [2024-11-24 00:07:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:25,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:25,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:25,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,664 INFO L87 Difference]: Start difference. First operand 1208 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:25,747 INFO L93 Difference]: Finished difference Result 2367 states and 3517 transitions. [2024-11-24 00:07:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:25,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-24 00:07:25,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:25,758 INFO L225 Difference]: With dead ends: 2367 [2024-11-24 00:07:25,758 INFO L226 Difference]: Without dead ends: 1708 [2024-11-24 00:07:25,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:25,762 INFO L435 NwaCegarLoop]: 174 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:25,762 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 255 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2024-11-24 00:07:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706. [2024-11-24 00:07:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1705 states have (on average 1.4645161290322581) internal successors, (2497), 1705 states have internal predecessors, (2497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2497 transitions. [2024-11-24 00:07:25,843 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2497 transitions. Word has length 56 [2024-11-24 00:07:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:25,844 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2497 transitions. [2024-11-24 00:07:25,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:25,844 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2497 transitions. [2024-11-24 00:07:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 00:07:25,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:25,847 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:25,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:07:25,847 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:25,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 53976900, now seen corresponding path program 1 times [2024-11-24 00:07:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:25,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028758358] [2024-11-24 00:07:25,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:25,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:26,139 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-24 00:07:26,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:26,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028758358] [2024-11-24 00:07:26,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028758358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:26,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:26,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:07:26,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778784823] [2024-11-24 00:07:26,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:26,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:07:26,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:26,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:07:26,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:26,143 INFO L87 Difference]: Start difference. First operand 1706 states and 2497 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:26,410 INFO L93 Difference]: Finished difference Result 4812 states and 7146 transitions. [2024-11-24 00:07:26,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:26,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 00:07:26,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:26,427 INFO L225 Difference]: With dead ends: 4812 [2024-11-24 00:07:26,427 INFO L226 Difference]: Without dead ends: 3962 [2024-11-24 00:07:26,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:26,431 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 556 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:26,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 599 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:26,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2024-11-24 00:07:26,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 2530. [2024-11-24 00:07:26,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2529 states have (on average 1.4665875840253064) internal successors, (3709), 2529 states have internal predecessors, (3709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:26,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 3709 transitions. [2024-11-24 00:07:26,596 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 3709 transitions. Word has length 78 [2024-11-24 00:07:26,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:26,597 INFO L471 AbstractCegarLoop]: Abstraction has 2530 states and 3709 transitions. [2024-11-24 00:07:26,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:26,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 3709 transitions. [2024-11-24 00:07:26,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 00:07:26,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:26,602 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:26,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:07:26,603 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:26,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:26,603 INFO L85 PathProgramCache]: Analyzing trace with hash -852456349, now seen corresponding path program 1 times [2024-11-24 00:07:26,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:26,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323005509] [2024-11-24 00:07:26,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:26,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:26,874 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:07:26,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:26,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323005509] [2024-11-24 00:07:26,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323005509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:26,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:26,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:07:26,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827518802] [2024-11-24 00:07:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:26,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:07:26,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:26,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:07:26,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:26,877 INFO L87 Difference]: Start difference. First operand 2530 states and 3709 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:27,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:27,146 INFO L93 Difference]: Finished difference Result 5636 states and 8358 transitions. [2024-11-24 00:07:27,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:27,146 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 00:07:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:27,169 INFO L225 Difference]: With dead ends: 5636 [2024-11-24 00:07:27,169 INFO L226 Difference]: Without dead ends: 4786 [2024-11-24 00:07:27,172 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:27,174 INFO L435 NwaCegarLoop]: 193 mSDtfsCounter, 498 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:27,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 652 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:27,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4786 states. [2024-11-24 00:07:27,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4786 to 3354. [2024-11-24 00:07:27,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3353 states have (on average 1.4676409185803758) internal successors, (4921), 3353 states have internal predecessors, (4921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4921 transitions. [2024-11-24 00:07:27,401 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4921 transitions. Word has length 78 [2024-11-24 00:07:27,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:27,402 INFO L471 AbstractCegarLoop]: Abstraction has 3354 states and 4921 transitions. [2024-11-24 00:07:27,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:27,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4921 transitions. [2024-11-24 00:07:27,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 00:07:27,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:27,405 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:27,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:07:27,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:27,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:27,406 INFO L85 PathProgramCache]: Analyzing trace with hash 2085340995, now seen corresponding path program 1 times [2024-11-24 00:07:27,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278705736] [2024-11-24 00:07:27,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:27,609 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:07:27,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:27,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278705736] [2024-11-24 00:07:27,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278705736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:27,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:27,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:07:27,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772283140] [2024-11-24 00:07:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:27,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:07:27,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:27,614 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:07:27,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:07:27,615 INFO L87 Difference]: Start difference. First operand 3354 states and 4921 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:27,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:27,907 INFO L93 Difference]: Finished difference Result 6460 states and 9570 transitions. [2024-11-24 00:07:27,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:07:27,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 00:07:27,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:27,931 INFO L225 Difference]: With dead ends: 6460 [2024-11-24 00:07:27,931 INFO L226 Difference]: Without dead ends: 5610 [2024-11-24 00:07:27,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:07:27,935 INFO L435 NwaCegarLoop]: 192 mSDtfsCounter, 540 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:27,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [540 Valid, 632 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:07:27,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5610 states. [2024-11-24 00:07:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5610 to 4178. [2024-11-24 00:07:28,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.4682786689011251) internal successors, (6133), 4177 states have internal predecessors, (6133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:28,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6133 transitions. [2024-11-24 00:07:28,176 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6133 transitions. Word has length 78 [2024-11-24 00:07:28,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:28,176 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6133 transitions. [2024-11-24 00:07:28,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:28,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6133 transitions. [2024-11-24 00:07:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:07:28,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:28,180 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:28,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:07:28,180 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:28,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:28,181 INFO L85 PathProgramCache]: Analyzing trace with hash 760016253, now seen corresponding path program 1 times [2024-11-24 00:07:28,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:28,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2634373] [2024-11-24 00:07:28,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:28,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:28,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:28,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:28,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2634373] [2024-11-24 00:07:28,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2634373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:28,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:28,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:28,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867733112] [2024-11-24 00:07:28,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:28,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:28,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:28,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:28,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:28,374 INFO L87 Difference]: Start difference. First operand 4178 states and 6133 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:28,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:28,552 INFO L93 Difference]: Finished difference Result 8326 states and 12235 transitions. [2024-11-24 00:07:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:07:28,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:28,572 INFO L225 Difference]: With dead ends: 8326 [2024-11-24 00:07:28,572 INFO L226 Difference]: Without dead ends: 4180 [2024-11-24 00:07:28,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:28,580 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 55 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:28,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 246 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4180 states. [2024-11-24 00:07:28,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4180 to 4178. [2024-11-24 00:07:28,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 4177 states have (on average 1.453914292554465) internal successors, (6073), 4177 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:28,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6073 transitions. [2024-11-24 00:07:28,833 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6073 transitions. Word has length 79 [2024-11-24 00:07:28,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:28,834 INFO L471 AbstractCegarLoop]: Abstraction has 4178 states and 6073 transitions. [2024-11-24 00:07:28,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:28,834 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6073 transitions. [2024-11-24 00:07:28,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:07:28,836 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:28,837 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:28,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:07:28,837 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:28,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:28,838 INFO L85 PathProgramCache]: Analyzing trace with hash -2135446276, now seen corresponding path program 1 times [2024-11-24 00:07:28,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:28,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759367706] [2024-11-24 00:07:28,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:28,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:28,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:29,000 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:29,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:29,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759367706] [2024-11-24 00:07:29,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759367706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:07:29,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:07:29,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:07:29,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685848563] [2024-11-24 00:07:29,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:07:29,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:07:29,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:29,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:07:29,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:29,003 INFO L87 Difference]: Start difference. First operand 4178 states and 6073 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:29,092 INFO L93 Difference]: Finished difference Result 6254 states and 9095 transitions. [2024-11-24 00:07:29,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:07:29,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:07:29,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:29,101 INFO L225 Difference]: With dead ends: 6254 [2024-11-24 00:07:29,101 INFO L226 Difference]: Without dead ends: 2108 [2024-11-24 00:07:29,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:07:29,106 INFO L435 NwaCegarLoop]: 138 mSDtfsCounter, 49 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:29,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:07:29,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2024-11-24 00:07:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2106. [2024-11-24 00:07:29,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 2105 states have (on average 1.436104513064133) internal successors, (3023), 2105 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3023 transitions. [2024-11-24 00:07:29,194 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3023 transitions. Word has length 79 [2024-11-24 00:07:29,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:07:29,194 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 3023 transitions. [2024-11-24 00:07:29,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:29,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3023 transitions. [2024-11-24 00:07:29,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 00:07:29,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:07:29,196 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:07:29,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:07:29,197 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:07:29,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:07:29,197 INFO L85 PathProgramCache]: Analyzing trace with hash 674497531, now seen corresponding path program 1 times [2024-11-24 00:07:29,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:07:29,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402262216] [2024-11-24 00:07:29,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:29,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:07:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:32,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:32,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:07:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402262216] [2024-11-24 00:07:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402262216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:07:32,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341923695] [2024-11-24 00:07:32,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:07:32,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:07:32,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:07:32,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:07:32,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:07:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:07:32,491 INFO L256 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-24 00:07:32,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:07:33,883 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:33,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:07:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:07:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341923695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:07:35,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:07:35,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 9] total 28 [2024-11-24 00:07:35,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896499645] [2024-11-24 00:07:35,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:07:35,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-24 00:07:35,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:07:35,079 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-24 00:07:35,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2024-11-24 00:07:35,079 INFO L87 Difference]: Start difference. First operand 2106 states and 3023 transitions. Second operand has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:07:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:07:59,394 INFO L93 Difference]: Finished difference Result 30562 states and 43692 transitions. [2024-11-24 00:07:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2024-11-24 00:07:59,395 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2024-11-24 00:07:59,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:07:59,490 INFO L225 Difference]: With dead ends: 30562 [2024-11-24 00:07:59,491 INFO L226 Difference]: Without dead ends: 28488 [2024-11-24 00:07:59,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19992 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=7100, Invalid=41520, Unknown=0, NotChecked=0, Total=48620 [2024-11-24 00:07:59,513 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 8542 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8542 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 2193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:07:59,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8542 Valid, 1581 Invalid, 2193 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [218 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 00:07:59,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28488 states. [2024-11-24 00:08:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28488 to 21676. [2024-11-24 00:08:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21676 states, 21675 states have (on average 1.4050288350634372) internal successors, (30454), 21675 states have internal predecessors, (30454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:00,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21676 states to 21676 states and 30454 transitions. [2024-11-24 00:08:00,765 INFO L78 Accepts]: Start accepts. Automaton has 21676 states and 30454 transitions. Word has length 79 [2024-11-24 00:08:00,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:00,766 INFO L471 AbstractCegarLoop]: Abstraction has 21676 states and 30454 transitions. [2024-11-24 00:08:00,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.071428571428571) internal successors, (226), 28 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 21676 states and 30454 transitions. [2024-11-24 00:08:00,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-24 00:08:00,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:00,768 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:00,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:08:00,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:08:00,970 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:00,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -163654874, now seen corresponding path program 1 times [2024-11-24 00:08:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:00,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230771180] [2024-11-24 00:08:00,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:00,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:01,169 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-24 00:08:01,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:01,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230771180] [2024-11-24 00:08:01,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230771180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:01,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:01,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:08:01,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814633901] [2024-11-24 00:08:01,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:01,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:08:01,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:01,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:08:01,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:08:01,171 INFO L87 Difference]: Start difference. First operand 21676 states and 30454 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:02,028 INFO L93 Difference]: Finished difference Result 39509 states and 55914 transitions. [2024-11-24 00:08:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:08:02,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2024-11-24 00:08:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:02,116 INFO L225 Difference]: With dead ends: 39509 [2024-11-24 00:08:02,116 INFO L226 Difference]: Without dead ends: 35007 [2024-11-24 00:08:02,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:08:02,127 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 462 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:02,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 646 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:08:02,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35007 states. [2024-11-24 00:08:03,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35007 to 25986. [2024-11-24 00:08:03,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25986 states, 25985 states have (on average 1.4040792765056764) internal successors, (36485), 25985 states have internal predecessors, (36485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25986 states to 25986 states and 36485 transitions. [2024-11-24 00:08:03,311 INFO L78 Accepts]: Start accepts. Automaton has 25986 states and 36485 transitions. Word has length 80 [2024-11-24 00:08:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:03,311 INFO L471 AbstractCegarLoop]: Abstraction has 25986 states and 36485 transitions. [2024-11-24 00:08:03,312 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:03,312 INFO L276 IsEmpty]: Start isEmpty. Operand 25986 states and 36485 transitions. [2024-11-24 00:08:03,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 00:08:03,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:03,314 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:03,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 00:08:03,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:03,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:03,315 INFO L85 PathProgramCache]: Analyzing trace with hash -269357657, now seen corresponding path program 1 times [2024-11-24 00:08:03,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:03,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887576560] [2024-11-24 00:08:03,316 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:03,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:08:05,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:05,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887576560] [2024-11-24 00:08:05,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887576560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:05,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812908144] [2024-11-24 00:08:05,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:05,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:05,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:05,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:05,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:08:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:05,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 00:08:05,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:07,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:08:07,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:09,855 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:08:09,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812908144] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:09,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 12] total 35 [2024-11-24 00:08:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736806605] [2024-11-24 00:08:09,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:09,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-24 00:08:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:09,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-24 00:08:09,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1030, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:08:09,858 INFO L87 Difference]: Start difference. First operand 25986 states and 36485 transitions. Second operand has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:47,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:47,907 INFO L93 Difference]: Finished difference Result 271505 states and 379733 transitions. [2024-11-24 00:08:47,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 396 states. [2024-11-24 00:08:47,907 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-24 00:08:47,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:48,658 INFO L225 Difference]: With dead ends: 271505 [2024-11-24 00:08:48,658 INFO L226 Difference]: Without dead ends: 245553 [2024-11-24 00:08:48,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 427 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82230 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=20054, Invalid=163558, Unknown=0, NotChecked=0, Total=183612 [2024-11-24 00:08:48,738 INFO L435 NwaCegarLoop]: 232 mSDtfsCounter, 10499 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10499 SdHoareTripleChecker+Valid, 3983 SdHoareTripleChecker+Invalid, 5125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:48,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10499 Valid, 3983 Invalid, 5125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-24 00:08:48,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245553 states. [2024-11-24 00:08:53,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245553 to 97606. [2024-11-24 00:08:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97606 states, 97605 states have (on average 1.382295988934993) internal successors, (134919), 97605 states have internal predecessors, (134919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:53,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97606 states to 97606 states and 134919 transitions. [2024-11-24 00:08:53,719 INFO L78 Accepts]: Start accepts. Automaton has 97606 states and 134919 transitions. Word has length 83 [2024-11-24 00:08:53,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:53,719 INFO L471 AbstractCegarLoop]: Abstraction has 97606 states and 134919 transitions. [2024-11-24 00:08:53,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 6.371428571428571) internal successors, (223), 35 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:53,720 INFO L276 IsEmpty]: Start isEmpty. Operand 97606 states and 134919 transitions. [2024-11-24 00:08:53,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-24 00:08:53,722 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:53,723 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:53,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:08:53,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-24 00:08:53,923 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:53,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:53,924 INFO L85 PathProgramCache]: Analyzing trace with hash -244055323, now seen corresponding path program 1 times [2024-11-24 00:08:53,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:53,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145232784] [2024-11-24 00:08:53,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:53,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:54,503 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:08:54,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145232784] [2024-11-24 00:08:54,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145232784] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489445046] [2024-11-24 00:08:54,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:54,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:54,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:54,507 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:54,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_743b3497-4397-4091-8f56-0a035a71e39a/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:08:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:54,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-24 00:08:54,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:09:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:09:00,666 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:09:10,193 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:09:10,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489445046] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:09:10,193 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:09:10,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 22, 26] total 54 [2024-11-24 00:09:10,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028876014] [2024-11-24 00:09:10,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:09:10,194 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-24 00:09:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:09:10,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-24 00:09:10,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2458, Unknown=0, NotChecked=0, Total=2862 [2024-11-24 00:09:10,196 INFO L87 Difference]: Start difference. First operand 97606 states and 134919 transitions. Second operand has 54 states, 54 states have (on average 4.2592592592592595) internal successors, (230), 54 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)