./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/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_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/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_0c19c501-60d9-408a-8d57-7919548074d4/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 3fcf713e89fe507946e50cd7ac5d1f3269c91b4606b9da766f31c3632a8650aa --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:03:44,219 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:03:44,315 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:03:44,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:03:44,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:03:44,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:03:44,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:03:44,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:03:44,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:03:44,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:03:44,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:03:44,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:03:44,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:03:44,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:03:44,352 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:03:44,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:03:44,353 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:03:44,355 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:03:44,356 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:03:44,356 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:44,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:44,357 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:03:44,357 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:03:44,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:03:44,358 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:03:44,358 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:03:44,358 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:03:44,358 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:03:44,358 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_0c19c501-60d9-408a-8d57-7919548074d4/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 -> 3fcf713e89fe507946e50cd7ac5d1f3269c91b4606b9da766f31c3632a8650aa [2024-11-23 23:03:44,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:03:44,681 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:03:44,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:03:44,685 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:03:44,685 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:03:44,688 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:03:47,644 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/data/0ffb39653/cd8fb144e20d45c98362911dfba16fa8/FLAG5c61638a1 [2024-11-23 23:03:47,981 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:03:47,984 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:03:48,001 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/data/0ffb39653/cd8fb144e20d45c98362911dfba16fa8/FLAG5c61638a1 [2024-11-23 23:03:48,025 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/data/0ffb39653/cd8fb144e20d45c98362911dfba16fa8 [2024-11-23 23:03:48,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:03:48,030 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:03:48,032 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:03:48,033 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:03:48,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:03:48,040 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,041 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee03eec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48, skipping insertion in model container [2024-11-23 23:03:48,041 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,097 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:03:48,409 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_0c19c501-60d9-408a-8d57-7919548074d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2024-11-23 23:03:48,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:03:48,511 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:03:48,629 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_0c19c501-60d9-408a-8d57-7919548074d4/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[12650,12663] [2024-11-23 23:03:48,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:03:48,697 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:03:48,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48 WrapperNode [2024-11-23 23:03:48,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:03:48,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:03:48,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:03:48,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:03:48,708 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,736 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,811 INFO L138 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1331 [2024-11-23 23:03:48,811 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:03:48,812 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:03:48,812 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:03:48,812 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:03:48,825 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,831 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,852 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 23:03:48,853 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,853 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,871 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,891 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,898 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:03:48,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:03:48,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:03:48,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:03:48,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (1/1) ... [2024-11-23 23:03:48,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:03:48,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:03:48,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:03:48,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c19c501-60d9-408a-8d57-7919548074d4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:03:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:03:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:03:48,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:03:48,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:03:49,148 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:03:49,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:03:50,583 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-23 23:03:50,587 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:03:50,614 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:03:50,617 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-23 23:03:50,617 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:50 BoogieIcfgContainer [2024-11-23 23:03:50,618 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:03:50,620 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:03:50,621 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:03:50,626 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:03:50,626 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:03:48" (1/3) ... [2024-11-23 23:03:50,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf02c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:50, skipping insertion in model container [2024-11-23 23:03:50,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:03:48" (2/3) ... [2024-11-23 23:03:50,627 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bf02c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:03:50, skipping insertion in model container [2024-11-23 23:03:50,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:03:50" (3/3) ... [2024-11-23 23:03:50,629 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-23 23:03:50,646 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:03:50,650 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_floodmax.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c that has 1 procedures, 314 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-23 23:03:50,736 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:03:50,746 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;@624371be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:03:50,747 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 23:03:50,753 INFO L276 IsEmpty]: Start isEmpty. Operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 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) [2024-11-23 23:03:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:03:50,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:50,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:50,764 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:50,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:50,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1531985210, now seen corresponding path program 1 times [2024-11-23 23:03:50,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:50,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732866566] [2024-11-23 23:03:50,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:51,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:51,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:51,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732866566] [2024-11-23 23:03:51,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732866566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:51,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:51,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:51,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791574100] [2024-11-23 23:03:51,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:51,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:51,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:51,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:51,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:51,714 INFO L87 Difference]: Start difference. First operand has 314 states, 312 states have (on average 1.7884615384615385) internal successors, (558), 313 states have internal predecessors, (558), 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 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-23 23:03:51,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:51,868 INFO L93 Difference]: Finished difference Result 577 states and 997 transitions. [2024-11-23 23:03:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2024-11-23 23:03:51,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:51,888 INFO L225 Difference]: With dead ends: 577 [2024-11-23 23:03:51,888 INFO L226 Difference]: Without dead ends: 434 [2024-11-23 23:03:51,891 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 [2024-11-23 23:03:51,894 INFO L435 NwaCegarLoop]: 552 mSDtfsCounter, 220 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:51,895 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1050 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:51,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2024-11-23 23:03:51,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2024-11-23 23:03:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 1.6790697674418604) internal successors, (722), 430 states have internal predecessors, (722), 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) [2024-11-23 23:03:51,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 722 transitions. [2024-11-23 23:03:51,950 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 722 transitions. Word has length 98 [2024-11-23 23:03:51,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:51,951 INFO L471 AbstractCegarLoop]: Abstraction has 431 states and 722 transitions. [2024-11-23 23:03:51,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2024-11-23 23:03:51,951 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 722 transitions. [2024-11-23 23:03:51,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-23 23:03:51,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:51,958 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:51,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:03:51,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:51,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:51,959 INFO L85 PathProgramCache]: Analyzing trace with hash 900005057, now seen corresponding path program 1 times [2024-11-23 23:03:51,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:51,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303023597] [2024-11-23 23:03:51,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:51,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:52,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:52,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303023597] [2024-11-23 23:03:52,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303023597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:52,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:52,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:52,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697593459] [2024-11-23 23:03:52,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:52,339 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:52,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:52,340 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:52,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:52,341 INFO L87 Difference]: Start difference. First operand 431 states and 722 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-23 23:03:52,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:52,432 INFO L93 Difference]: Finished difference Result 921 states and 1538 transitions. [2024-11-23 23:03:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:52,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 101 [2024-11-23 23:03:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:52,439 INFO L225 Difference]: With dead ends: 921 [2024-11-23 23:03:52,440 INFO L226 Difference]: Without dead ends: 667 [2024-11-23 23:03:52,441 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 [2024-11-23 23:03:52,443 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 200 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:52,444 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1016 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-23 23:03:52,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 663. [2024-11-23 23:03:52,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 662 states have (on average 1.6706948640483383) internal successors, (1106), 662 states have internal predecessors, (1106), 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) [2024-11-23 23:03:52,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1106 transitions. [2024-11-23 23:03:52,500 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1106 transitions. Word has length 101 [2024-11-23 23:03:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:52,501 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1106 transitions. [2024-11-23 23:03:52,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2024-11-23 23:03:52,502 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1106 transitions. [2024-11-23 23:03:52,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-23 23:03:52,510 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:52,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:52,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:03:52,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:52,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:52,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2056367170, now seen corresponding path program 1 times [2024-11-23 23:03:52,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:52,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722880078] [2024-11-23 23:03:52,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:52,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:52,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:52,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:52,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722880078] [2024-11-23 23:03:52,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722880078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:52,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:52,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:52,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890806792] [2024-11-23 23:03:52,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:52,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:52,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:52,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:52,841 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:52,841 INFO L87 Difference]: Start difference. First operand 663 states and 1106 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-23 23:03:52,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:52,899 INFO L93 Difference]: Finished difference Result 1599 states and 2656 transitions. [2024-11-23 23:03:52,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:52,900 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 104 [2024-11-23 23:03:52,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:52,905 INFO L225 Difference]: With dead ends: 1599 [2024-11-23 23:03:52,905 INFO L226 Difference]: Without dead ends: 1113 [2024-11-23 23:03:52,906 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 [2024-11-23 23:03:52,907 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 194 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:52,907 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 1017 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:52,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2024-11-23 23:03:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 1107. [2024-11-23 23:03:52,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 1106 states have (on average 1.6582278481012658) internal successors, (1834), 1106 states have internal predecessors, (1834), 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) [2024-11-23 23:03:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1834 transitions. [2024-11-23 23:03:52,947 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1834 transitions. Word has length 104 [2024-11-23 23:03:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:52,948 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1834 transitions. [2024-11-23 23:03:52,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2024-11-23 23:03:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1834 transitions. [2024-11-23 23:03:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-23 23:03:52,951 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:52,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:52,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 23:03:52,951 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:52,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:52,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1532440003, now seen corresponding path program 1 times [2024-11-23 23:03:52,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:52,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424594381] [2024-11-23 23:03:52,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:52,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:53,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:53,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:53,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424594381] [2024-11-23 23:03:53,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424594381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:53,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892182167] [2024-11-23 23:03:53,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:53,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:53,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:53,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:53,222 INFO L87 Difference]: Start difference. First operand 1107 states and 1834 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-23 23:03:53,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:53,293 INFO L93 Difference]: Finished difference Result 2895 states and 4772 transitions. [2024-11-23 23:03:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:53,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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 107 [2024-11-23 23:03:53,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:53,301 INFO L225 Difference]: With dead ends: 2895 [2024-11-23 23:03:53,301 INFO L226 Difference]: Without dead ends: 1965 [2024-11-23 23:03:53,302 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 [2024-11-23 23:03:53,306 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 188 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:53,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1018 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:53,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2024-11-23 23:03:53,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1955. [2024-11-23 23:03:53,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1954 states have (on average 1.6427840327533265) internal successors, (3210), 1954 states have internal predecessors, (3210), 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) [2024-11-23 23:03:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 3210 transitions. [2024-11-23 23:03:53,403 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 3210 transitions. Word has length 107 [2024-11-23 23:03:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:53,403 INFO L471 AbstractCegarLoop]: Abstraction has 1955 states and 3210 transitions. [2024-11-23 23:03:53,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2024-11-23 23:03:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 3210 transitions. [2024-11-23 23:03:53,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-23 23:03:53,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:53,407 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:53,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:03:53,407 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:53,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:53,408 INFO L85 PathProgramCache]: Analyzing trace with hash 911548994, now seen corresponding path program 1 times [2024-11-23 23:03:53,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:53,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911852382] [2024-11-23 23:03:53,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:53,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:53,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:53,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:53,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911852382] [2024-11-23 23:03:53,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911852382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:53,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:53,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:03:53,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571579130] [2024-11-23 23:03:53,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:53,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:03:53,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:53,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:03:53,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:03:53,785 INFO L87 Difference]: Start difference. First operand 1955 states and 3210 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2024-11-23 23:03:54,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:54,230 INFO L93 Difference]: Finished difference Result 10211 states and 16886 transitions. [2024-11-23 23:03:54,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:03:54,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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 110 [2024-11-23 23:03:54,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:54,264 INFO L225 Difference]: With dead ends: 10211 [2024-11-23 23:03:54,264 INFO L226 Difference]: Without dead ends: 8433 [2024-11-23 23:03:54,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:03:54,272 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 1935 mSDsluCounter, 3759 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1935 SdHoareTripleChecker+Valid, 4274 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:54,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1935 Valid, 4274 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:03:54,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2024-11-23 23:03:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 3613. [2024-11-23 23:03:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3613 states, 3612 states have (on average 1.6403654485049834) internal successors, (5925), 3612 states have internal predecessors, (5925), 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) [2024-11-23 23:03:54,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3613 states to 3613 states and 5925 transitions. [2024-11-23 23:03:54,425 INFO L78 Accepts]: Start accepts. Automaton has 3613 states and 5925 transitions. Word has length 110 [2024-11-23 23:03:54,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:54,425 INFO L471 AbstractCegarLoop]: Abstraction has 3613 states and 5925 transitions. [2024-11-23 23:03:54,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 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) [2024-11-23 23:03:54,426 INFO L276 IsEmpty]: Start isEmpty. Operand 3613 states and 5925 transitions. [2024-11-23 23:03:54,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-23 23:03:54,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:54,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:54,434 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:03:54,434 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:54,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1873814308, now seen corresponding path program 1 times [2024-11-23 23:03:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:54,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139579233] [2024-11-23 23:03:54,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:54,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:54,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:54,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139579233] [2024-11-23 23:03:54,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139579233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:54,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:54,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:03:54,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214010823] [2024-11-23 23:03:54,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:54,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:03:54,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:54,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:03:54,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:03:54,664 INFO L87 Difference]: Start difference. First operand 3613 states and 5925 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-11-23 23:03:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:54,818 INFO L93 Difference]: Finished difference Result 10593 states and 17463 transitions. [2024-11-23 23:03:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:03:54,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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 111 [2024-11-23 23:03:54,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:54,843 INFO L225 Difference]: With dead ends: 10593 [2024-11-23 23:03:54,843 INFO L226 Difference]: Without dead ends: 7157 [2024-11-23 23:03:54,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:54,853 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 658 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 658 SdHoareTripleChecker+Valid, 1569 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:54,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [658 Valid, 1569 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:54,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7157 states. [2024-11-23 23:03:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7157 to 5368. [2024-11-23 23:03:55,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5368 states, 5367 states have (on average 1.6431898639836036) internal successors, (8819), 5367 states have internal predecessors, (8819), 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) [2024-11-23 23:03:55,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5368 states to 5368 states and 8819 transitions. [2024-11-23 23:03:55,048 INFO L78 Accepts]: Start accepts. Automaton has 5368 states and 8819 transitions. Word has length 111 [2024-11-23 23:03:55,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:55,048 INFO L471 AbstractCegarLoop]: Abstraction has 5368 states and 8819 transitions. [2024-11-23 23:03:55,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 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) [2024-11-23 23:03:55,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5368 states and 8819 transitions. [2024-11-23 23:03:55,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-23 23:03:55,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:55,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:55,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:03:55,053 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:55,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1978794569, now seen corresponding path program 1 times [2024-11-23 23:03:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213607097] [2024-11-23 23:03:55,056 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:55,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:55,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:55,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213607097] [2024-11-23 23:03:55,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213607097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:55,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:55,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:03:55,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803621452] [2024-11-23 23:03:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:55,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:03:55,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:55,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:03:55,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:03:55,309 INFO L87 Difference]: Start difference. First operand 5368 states and 8819 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-11-23 23:03:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:55,525 INFO L93 Difference]: Finished difference Result 15765 states and 25969 transitions. [2024-11-23 23:03:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:03:55,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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 112 [2024-11-23 23:03:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:55,557 INFO L225 Difference]: With dead ends: 15765 [2024-11-23 23:03:55,558 INFO L226 Difference]: Without dead ends: 10574 [2024-11-23 23:03:55,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:55,563 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 656 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:55,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [656 Valid, 1733 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:55,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2024-11-23 23:03:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 7947. [2024-11-23 23:03:55,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7947 states, 7946 states have (on average 1.641580669519255) internal successors, (13044), 7946 states have internal predecessors, (13044), 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) [2024-11-23 23:03:55,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7947 states to 7947 states and 13044 transitions. [2024-11-23 23:03:55,778 INFO L78 Accepts]: Start accepts. Automaton has 7947 states and 13044 transitions. Word has length 112 [2024-11-23 23:03:55,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:55,778 INFO L471 AbstractCegarLoop]: Abstraction has 7947 states and 13044 transitions. [2024-11-23 23:03:55,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 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) [2024-11-23 23:03:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7947 states and 13044 transitions. [2024-11-23 23:03:55,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:03:55,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:55,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:55,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:03:55,783 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:55,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:55,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2111780172, now seen corresponding path program 1 times [2024-11-23 23:03:55,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:55,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883748398] [2024-11-23 23:03:55,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:55,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:55,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:55,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:55,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:55,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883748398] [2024-11-23 23:03:55,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883748398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:55,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:55,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:55,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238974970] [2024-11-23 23:03:55,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:55,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:55,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:55,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:55,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:55,982 INFO L87 Difference]: Start difference. First operand 7947 states and 13044 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:56,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:56,083 INFO L93 Difference]: Finished difference Result 17498 states and 28779 transitions. [2024-11-23 23:03:56,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:56,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2024-11-23 23:03:56,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:56,110 INFO L225 Difference]: With dead ends: 17498 [2024-11-23 23:03:56,110 INFO L226 Difference]: Without dead ends: 12105 [2024-11-23 23:03:56,117 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 [2024-11-23 23:03:56,118 INFO L435 NwaCegarLoop]: 653 mSDtfsCounter, 199 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1141 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 [2024-11-23 23:03:56,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1141 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:56,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12105 states. [2024-11-23 23:03:56,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12105 to 12103. [2024-11-23 23:03:56,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12103 states, 12102 states have (on average 1.6384068748967113) internal successors, (19828), 12102 states have internal predecessors, (19828), 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) [2024-11-23 23:03:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12103 states to 12103 states and 19828 transitions. [2024-11-23 23:03:56,429 INFO L78 Accepts]: Start accepts. Automaton has 12103 states and 19828 transitions. Word has length 113 [2024-11-23 23:03:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:56,429 INFO L471 AbstractCegarLoop]: Abstraction has 12103 states and 19828 transitions. [2024-11-23 23:03:56,429 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 12103 states and 19828 transitions. [2024-11-23 23:03:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:03:56,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:56,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:56,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:03:56,432 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:56,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:56,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1571535332, now seen corresponding path program 1 times [2024-11-23 23:03:56,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:56,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633917834] [2024-11-23 23:03:56,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:56,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:56,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:56,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:56,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633917834] [2024-11-23 23:03:56,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633917834] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:56,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:56,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:56,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155081586] [2024-11-23 23:03:56,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:56,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:56,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:56,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:56,578 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:56,578 INFO L87 Difference]: Start difference. First operand 12103 states and 19828 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:56,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:56,732 INFO L93 Difference]: Finished difference Result 23535 states and 38662 transitions. [2024-11-23 23:03:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:56,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2024-11-23 23:03:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:56,776 INFO L225 Difference]: With dead ends: 23535 [2024-11-23 23:03:56,777 INFO L226 Difference]: Without dead ends: 17013 [2024-11-23 23:03:56,787 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 [2024-11-23 23:03:56,789 INFO L435 NwaCegarLoop]: 627 mSDtfsCounter, 193 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1116 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 [2024-11-23 23:03:56,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1116 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:56,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17013 states. [2024-11-23 23:03:57,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17013 to 17011. [2024-11-23 23:03:57,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17011 states, 17010 states have (on average 1.6357436801881247) internal successors, (27824), 17010 states have internal predecessors, (27824), 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) [2024-11-23 23:03:57,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17011 states to 17011 states and 27824 transitions. [2024-11-23 23:03:57,226 INFO L78 Accepts]: Start accepts. Automaton has 17011 states and 27824 transitions. Word has length 113 [2024-11-23 23:03:57,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:57,226 INFO L471 AbstractCegarLoop]: Abstraction has 17011 states and 27824 transitions. [2024-11-23 23:03:57,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17011 states and 27824 transitions. [2024-11-23 23:03:57,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:03:57,230 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:57,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:57,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:03:57,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:57,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:57,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1155143491, now seen corresponding path program 1 times [2024-11-23 23:03:57,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:57,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856410317] [2024-11-23 23:03:57,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:57,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:57,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856410317] [2024-11-23 23:03:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856410317] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:57,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:03:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545025357] [2024-11-23 23:03:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:57,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:03:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:57,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:03:57,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:03:57,558 INFO L87 Difference]: Start difference. First operand 17011 states and 27824 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-23 23:03:57,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:57,781 INFO L93 Difference]: Finished difference Result 54370 states and 89164 transitions. [2024-11-23 23:03:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:03:57,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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 113 [2024-11-23 23:03:57,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:57,865 INFO L225 Difference]: With dead ends: 54370 [2024-11-23 23:03:57,866 INFO L226 Difference]: Without dead ends: 37643 [2024-11-23 23:03:57,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:57,889 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 654 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:57,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1514 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:03:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37643 states. [2024-11-23 23:03:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37643 to 27271. [2024-11-23 23:03:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27271 states, 27270 states have (on average 1.6332966629996333) internal successors, (44540), 27270 states have internal predecessors, (44540), 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) [2024-11-23 23:03:58,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27271 states to 27271 states and 44540 transitions. [2024-11-23 23:03:58,539 INFO L78 Accepts]: Start accepts. Automaton has 27271 states and 44540 transitions. Word has length 113 [2024-11-23 23:03:58,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:58,541 INFO L471 AbstractCegarLoop]: Abstraction has 27271 states and 44540 transitions. [2024-11-23 23:03:58,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 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) [2024-11-23 23:03:58,541 INFO L276 IsEmpty]: Start isEmpty. Operand 27271 states and 44540 transitions. [2024-11-23 23:03:58,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:03:58,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:58,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:58,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:03:58,543 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:58,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:58,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1280489340, now seen corresponding path program 1 times [2024-11-23 23:03:58,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:58,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288184228] [2024-11-23 23:03:58,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:58,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:58,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:58,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:58,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288184228] [2024-11-23 23:03:58,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288184228] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:58,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:58,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:58,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958880754] [2024-11-23 23:03:58,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:58,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:58,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:58,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:58,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:58,698 INFO L87 Difference]: Start difference. First operand 27271 states and 44540 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:58,935 INFO L93 Difference]: Finished difference Result 53211 states and 87188 transitions. [2024-11-23 23:03:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:03:58,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2024-11-23 23:03:58,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:59,021 INFO L225 Difference]: With dead ends: 53211 [2024-11-23 23:03:59,022 INFO L226 Difference]: Without dead ends: 38175 [2024-11-23 23:03:59,043 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 [2024-11-23 23:03:59,044 INFO L435 NwaCegarLoop]: 600 mSDtfsCounter, 187 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 1090 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 [2024-11-23 23:03:59,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:03:59,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2024-11-23 23:03:59,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 38173. [2024-11-23 23:03:59,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38173 states, 38172 states have (on average 1.6304621188305564) internal successors, (62238), 38172 states have internal predecessors, (62238), 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) [2024-11-23 23:03:59,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38173 states to 38173 states and 62238 transitions. [2024-11-23 23:03:59,759 INFO L78 Accepts]: Start accepts. Automaton has 38173 states and 62238 transitions. Word has length 113 [2024-11-23 23:03:59,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:59,760 INFO L471 AbstractCegarLoop]: Abstraction has 38173 states and 62238 transitions. [2024-11-23 23:03:59,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:03:59,760 INFO L276 IsEmpty]: Start isEmpty. Operand 38173 states and 62238 transitions. [2024-11-23 23:03:59,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2024-11-23 23:03:59,762 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:59,762 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:59,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:03:59,762 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:59,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash 760927820, now seen corresponding path program 1 times [2024-11-23 23:03:59,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:59,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809415046] [2024-11-23 23:03:59,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:59,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:59,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:03:59,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:59,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809415046] [2024-11-23 23:03:59,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809415046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:59,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:59,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:03:59,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548754859] [2024-11-23 23:03:59,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:59,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:03:59,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:59,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:03:59,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:03:59,944 INFO L87 Difference]: Start difference. First operand 38173 states and 62238 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:04:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:00,355 INFO L93 Difference]: Finished difference Result 83680 states and 137527 transitions. [2024-11-23 23:04:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:04:00,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 113 [2024-11-23 23:04:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:00,468 INFO L225 Difference]: With dead ends: 83680 [2024-11-23 23:04:00,468 INFO L226 Difference]: Without dead ends: 56799 [2024-11-23 23:04:00,491 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 [2024-11-23 23:04:00,491 INFO L435 NwaCegarLoop]: 692 mSDtfsCounter, 205 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1179 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 [2024-11-23 23:04:00,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1179 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:00,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56799 states. [2024-11-23 23:04:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56799 to 56797. [2024-11-23 23:04:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56797 states, 56796 states have (on average 1.6322628354109445) internal successors, (92706), 56796 states have internal predecessors, (92706), 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) [2024-11-23 23:04:01,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56797 states to 56797 states and 92706 transitions. [2024-11-23 23:04:01,384 INFO L78 Accepts]: Start accepts. Automaton has 56797 states and 92706 transitions. Word has length 113 [2024-11-23 23:04:01,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:01,385 INFO L471 AbstractCegarLoop]: Abstraction has 56797 states and 92706 transitions. [2024-11-23 23:04:01,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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) [2024-11-23 23:04:01,385 INFO L276 IsEmpty]: Start isEmpty. Operand 56797 states and 92706 transitions. [2024-11-23 23:04:01,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-23 23:04:01,386 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:01,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:01,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:04:01,387 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:01,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:01,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1396321872, now seen corresponding path program 1 times [2024-11-23 23:04:01,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:01,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100428584] [2024-11-23 23:04:01,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:01,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:01,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:01,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100428584] [2024-11-23 23:04:01,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100428584] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:01,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:01,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:04:01,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839533129] [2024-11-23 23:04:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:01,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:04:01,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:01,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:04:01,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:04:01,587 INFO L87 Difference]: Start difference. First operand 56797 states and 92706 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2024-11-23 23:04:02,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:02,427 INFO L93 Difference]: Finished difference Result 182050 states and 297971 transitions. [2024-11-23 23:04:02,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:04:02,428 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) Word has length 114 [2024-11-23 23:04:02,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:02,862 INFO L225 Difference]: With dead ends: 182050 [2024-11-23 23:04:02,863 INFO L226 Difference]: Without dead ends: 125485 [2024-11-23 23:04:02,897 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:04:02,900 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 652 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:02,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1713 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125485 states. [2024-11-23 23:04:04,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125485 to 90916. [2024-11-23 23:04:04,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90916 states, 90915 states have (on average 1.6285431446955947) internal successors, (148059), 90915 states have internal predecessors, (148059), 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) [2024-11-23 23:04:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90916 states to 90916 states and 148059 transitions. [2024-11-23 23:04:04,514 INFO L78 Accepts]: Start accepts. Automaton has 90916 states and 148059 transitions. Word has length 114 [2024-11-23 23:04:04,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:04,514 INFO L471 AbstractCegarLoop]: Abstraction has 90916 states and 148059 transitions. [2024-11-23 23:04:04,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 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) [2024-11-23 23:04:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 90916 states and 148059 transitions. [2024-11-23 23:04:04,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-23 23:04:04,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:04,516 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:04,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:04:04,517 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:04,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 318216513, now seen corresponding path program 1 times [2024-11-23 23:04:04,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:04,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062282836] [2024-11-23 23:04:04,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:05,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:05,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:05,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062282836] [2024-11-23 23:04:05,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062282836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:05,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:05,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:04:05,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425146592] [2024-11-23 23:04:05,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:05,329 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:04:05,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:05,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:04:05,330 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:05,330 INFO L87 Difference]: Start difference. First operand 90916 states and 148059 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-23 23:04:06,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:06,018 INFO L93 Difference]: Finished difference Result 181602 states and 295740 transitions. [2024-11-23 23:04:06,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:06,018 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 116 [2024-11-23 23:04:06,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:06,140 INFO L225 Difference]: With dead ends: 181602 [2024-11-23 23:04:06,141 INFO L226 Difference]: Without dead ends: 90918 [2024-11-23 23:04:06,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:06,196 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 570 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:06,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 1992 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:06,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90918 states. [2024-11-23 23:04:07,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90918 to 90916. [2024-11-23 23:04:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90916 states, 90915 states have (on average 1.6216685915415499) internal successors, (147434), 90915 states have internal predecessors, (147434), 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) [2024-11-23 23:04:07,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90916 states to 90916 states and 147434 transitions. [2024-11-23 23:04:07,460 INFO L78 Accepts]: Start accepts. Automaton has 90916 states and 147434 transitions. Word has length 116 [2024-11-23 23:04:07,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:07,460 INFO L471 AbstractCegarLoop]: Abstraction has 90916 states and 147434 transitions. [2024-11-23 23:04:07,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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) [2024-11-23 23:04:07,461 INFO L276 IsEmpty]: Start isEmpty. Operand 90916 states and 147434 transitions. [2024-11-23 23:04:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-23 23:04:07,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:07,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:07,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:04:07,462 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:07,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:07,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1053071851, now seen corresponding path program 1 times [2024-11-23 23:04:07,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:07,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53534926] [2024-11-23 23:04:07,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:07,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:07,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:08,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:08,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53534926] [2024-11-23 23:04:08,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53534926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:08,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:08,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:04:08,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003311421] [2024-11-23 23:04:08,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:08,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:04:08,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:08,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:04:08,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:08,257 INFO L87 Difference]: Start difference. First operand 90916 states and 147434 transitions. Second operand has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-11-23 23:04:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:09,342 INFO L93 Difference]: Finished difference Result 265760 states and 431456 transitions. [2024-11-23 23:04:09,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:09,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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 119 [2024-11-23 23:04:09,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:09,980 INFO L225 Difference]: With dead ends: 265760 [2024-11-23 23:04:09,981 INFO L226 Difference]: Without dead ends: 175076 [2024-11-23 23:04:10,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:04:10,040 INFO L435 NwaCegarLoop]: 514 mSDtfsCounter, 751 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:10,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 2005 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:10,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175076 states. [2024-11-23 23:04:11,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175076 to 175074. [2024-11-23 23:04:12,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175074 states, 175073 states have (on average 1.6129443146573144) internal successors, (282383), 175073 states have internal predecessors, (282383), 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) [2024-11-23 23:04:12,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175074 states to 175074 states and 282383 transitions. [2024-11-23 23:04:12,793 INFO L78 Accepts]: Start accepts. Automaton has 175074 states and 282383 transitions. Word has length 119 [2024-11-23 23:04:12,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:12,794 INFO L471 AbstractCegarLoop]: Abstraction has 175074 states and 282383 transitions. [2024-11-23 23:04:12,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.833333333333332) internal successors, (119), 6 states have internal predecessors, (119), 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) [2024-11-23 23:04:12,794 INFO L276 IsEmpty]: Start isEmpty. Operand 175074 states and 282383 transitions. [2024-11-23 23:04:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-23 23:04:12,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:12,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:12,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:04:12,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:12,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:12,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1712601854, now seen corresponding path program 1 times [2024-11-23 23:04:12,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:12,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32873184] [2024-11-23 23:04:12,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:12,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:13,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:04:13,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:13,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32873184] [2024-11-23 23:04:13,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32873184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:13,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:13,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:04:13,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608554945] [2024-11-23 23:04:13,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:13,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:04:13,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:13,663 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:04:13,663 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:04:13,663 INFO L87 Difference]: Start difference. First operand 175074 states and 282383 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-23 23:04:14,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:14,342 INFO L93 Difference]: Finished difference Result 178948 states and 288192 transitions. [2024-11-23 23:04:14,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:04:14,342 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 120 [2024-11-23 23:04:14,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:15,286 INFO L225 Difference]: With dead ends: 178948 [2024-11-23 23:04:15,287 INFO L226 Difference]: Without dead ends: 178946 [2024-11-23 23:04:15,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:04:15,309 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 1546 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:15,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2067 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:04:15,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178946 states. [2024-11-23 23:04:17,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178946 to 178946. [2024-11-23 23:04:17,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178946 states, 178945 states have (on average 1.599530582022409) internal successors, (286228), 178945 states have internal predecessors, (286228), 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) [2024-11-23 23:04:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178946 states to 178946 states and 286228 transitions. [2024-11-23 23:04:17,547 INFO L78 Accepts]: Start accepts. Automaton has 178946 states and 286228 transitions. Word has length 120 [2024-11-23 23:04:17,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:17,547 INFO L471 AbstractCegarLoop]: Abstraction has 178946 states and 286228 transitions. [2024-11-23 23:04:17,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2024-11-23 23:04:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 178946 states and 286228 transitions. [2024-11-23 23:04:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 23:04:17,552 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:17,552 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:17,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 23:04:17,553 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:17,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:17,553 INFO L85 PathProgramCache]: Analyzing trace with hash -991920616, now seen corresponding path program 1 times [2024-11-23 23:04:17,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:17,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907033465] [2024-11-23 23:04:17,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:17,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:17,848 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-23 23:04:17,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:17,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907033465] [2024-11-23 23:04:17,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907033465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:17,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:17,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:04:17,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430343890] [2024-11-23 23:04:17,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:17,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:04:17,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:17,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:04:17,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:17,850 INFO L87 Difference]: Start difference. First operand 178946 states and 286228 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 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) [2024-11-23 23:04:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:19,991 INFO L93 Difference]: Finished difference Result 487708 states and 782933 transitions. [2024-11-23 23:04:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 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) Word has length 151 [2024-11-23 23:04:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:20,511 INFO L225 Difference]: With dead ends: 487708 [2024-11-23 23:04:20,511 INFO L226 Difference]: Without dead ends: 409056 [2024-11-23 23:04:20,625 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 [2024-11-23 23:04:20,626 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 1312 mSDsluCounter, 2413 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:20,626 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1312 Valid, 3155 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409056 states. [2024-11-23 23:04:24,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409056 to 287494. [2024-11-23 23:04:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287494 states, 287493 states have (on average 1.5982163043969766) internal successors, (459476), 287493 states have internal predecessors, (459476), 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) [2024-11-23 23:04:26,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287494 states to 287494 states and 459476 transitions. [2024-11-23 23:04:26,411 INFO L78 Accepts]: Start accepts. Automaton has 287494 states and 459476 transitions. Word has length 151 [2024-11-23 23:04:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:04:26,411 INFO L471 AbstractCegarLoop]: Abstraction has 287494 states and 459476 transitions. [2024-11-23 23:04:26,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 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) [2024-11-23 23:04:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 287494 states and 459476 transitions. [2024-11-23 23:04:26,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-23 23:04:26,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:04:26,420 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:04:26,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 23:04:26,420 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:04:26,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:04:26,424 INFO L85 PathProgramCache]: Analyzing trace with hash -451675776, now seen corresponding path program 1 times [2024-11-23 23:04:26,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:04:26,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564615456] [2024-11-23 23:04:26,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:04:26,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:04:26,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:04:26,772 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-23 23:04:26,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:04:26,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564615456] [2024-11-23 23:04:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564615456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:04:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:04:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:04:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735074641] [2024-11-23 23:04:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:04:26,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:04:26,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:04:26,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:04:26,775 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:04:26,776 INFO L87 Difference]: Start difference. First operand 287494 states and 459476 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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) [2024-11-23 23:04:28,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:04:28,945 INFO L93 Difference]: Finished difference Result 537756 states and 863617 transitions. [2024-11-23 23:04:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:04:28,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 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 151 [2024-11-23 23:04:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:04:29,443 INFO L225 Difference]: With dead ends: 537756 [2024-11-23 23:04:29,443 INFO L226 Difference]: Without dead ends: 459104 [2024-11-23 23:04:29,496 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 [2024-11-23 23:04:29,497 INFO L435 NwaCegarLoop]: 738 mSDtfsCounter, 1401 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:04:29,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2710 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:04:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459104 states.