./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 22537e02f4cb8698af716d464e1d3c3736fc7fa276fb73e44b45e0b685f49af8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:30:08,146 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:30:08,287 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:30:08,298 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:30:08,301 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:30:08,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:30:08,329 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:30:08,329 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:30:08,330 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:30:08,331 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:30:08,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:30:08,332 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:30:08,333 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:30:08,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:30:08,334 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:30:08,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:30:08,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:30:08,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:30:08,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:30:08,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:30:08,337 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:30:08,338 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:30:08,338 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:30:08,339 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:30:08,339 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:30:08,340 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:30:08,340 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:30:08,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:30:08,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:08,341 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:30:08,342 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:30:08,342 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:30:08,343 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:30:08,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:30:08,343 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:30:08,344 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:30:08,344 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:30:08,345 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:30:08,345 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:30:08,345 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22537e02f4cb8698af716d464e1d3c3736fc7fa276fb73e44b45e0b685f49af8 [2023-11-06 22:30:08,706 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:30:08,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:30:08,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:30:08,782 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:30:08,783 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:30:08,785 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-06 22:30:12,131 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:30:12,803 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:30:12,804 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-06 22:30:12,849 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/data/3c76531cf/98711da8799e4d32ad17f3633500466c/FLAGdf2220cb3 [2023-11-06 22:30:12,869 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/data/3c76531cf/98711da8799e4d32ad17f3633500466c [2023-11-06 22:30:12,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:30:12,879 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:30:12,883 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:12,883 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:30:12,889 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:30:12,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:12" (1/1) ... [2023-11-06 22:30:12,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5993e994 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:12, skipping insertion in model container [2023-11-06 22:30:12,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:12" (1/1) ... [2023-11-06 22:30:13,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:30:13,573 WARN L240 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_74b04d20-84d9-43c0-a046-8f79d9917478/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[11640,11653] [2023-11-06 22:30:13,666 WARN L240 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_74b04d20-84d9-43c0-a046-8f79d9917478/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[18576,18589] [2023-11-06 22:30:15,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:15,104 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:30:15,161 WARN L240 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_74b04d20-84d9-43c0-a046-8f79d9917478/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[11640,11653] [2023-11-06 22:30:15,185 WARN L240 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_74b04d20-84d9-43c0-a046-8f79d9917478/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c[18576,18589] [2023-11-06 22:30:15,888 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:30:15,927 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:30:15,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15 WrapperNode [2023-11-06 22:30:15,928 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:30:15,930 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:15,930 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:30:15,930 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:30:15,939 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,436 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-11-06 22:30:16,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:30:16,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:30:16,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:30:16,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:30:16,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,854 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,947 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:16,966 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:17,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:30:17,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:30:17,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:30:17,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:30:17,119 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (1/1) ... [2023-11-06 22:30:17,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:30:17,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:17,194 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:30:17,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:30:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:30:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:30:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:30:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:30:17,459 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:30:17,462 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:30:23,704 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:30:23,722 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:30:23,722 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:30:23,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:23 BoogieIcfgContainer [2023-11-06 22:30:23,727 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:30:23,730 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:30:23,730 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:30:23,733 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:30:23,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:30:12" (1/3) ... [2023-11-06 22:30:23,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8c46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:23, skipping insertion in model container [2023-11-06 22:30:23,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:15" (2/3) ... [2023-11-06 22:30:23,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8c46e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:23, skipping insertion in model container [2023-11-06 22:30:23,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:23" (3/3) ... [2023-11-06 22:30:23,737 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label05.c [2023-11-06 22:30:23,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:30:23,761 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:30:23,890 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:30:23,899 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@61e139a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:30:23,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:30:23,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 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) [2023-11-06 22:30:23,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:30:23,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:23,929 INFO L195 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] [2023-11-06 22:30:23,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:23,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:23,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2023-11-06 22:30:23,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:23,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057320800] [2023-11-06 22:30:23,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:23,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:24,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057320800] [2023-11-06 22:30:24,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057320800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:24,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:24,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:30:24,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481155779] [2023-11-06 22:30:24,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:24,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:30:24,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:30:24,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:30:24,363 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-11-06 22:30:24,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:24,469 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2023-11-06 22:30:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:30:24,476 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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 24 [2023-11-06 22:30:24,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:24,508 INFO L225 Difference]: With dead ends: 1761 [2023-11-06 22:30:24,514 INFO L226 Difference]: Without dead ends: 833 [2023-11-06 22:30:24,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:30:24,537 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:24,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:24,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-06 22:30:24,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-06 22:30:24,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 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) [2023-11-06 22:30:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2023-11-06 22:30:24,680 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2023-11-06 22:30:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:24,681 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2023-11-06 22:30:24,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 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) [2023-11-06 22:30:24,683 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2023-11-06 22:30:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:30:24,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:24,686 INFO L195 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] [2023-11-06 22:30:24,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:30:24,687 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:24,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:24,688 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2023-11-06 22:30:24,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:24,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517707896] [2023-11-06 22:30:24,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:24,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:24,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:24,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517707896] [2023-11-06 22:30:24,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517707896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:24,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:24,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:30:24,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088014777] [2023-11-06 22:30:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:24,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:30:24,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:24,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:30:24,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:24,978 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-11-06 22:30:25,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:25,157 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2023-11-06 22:30:25,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:30:25,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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 24 [2023-11-06 22:30:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:25,165 INFO L225 Difference]: With dead ends: 879 [2023-11-06 22:30:25,166 INFO L226 Difference]: Without dead ends: 833 [2023-11-06 22:30:25,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:25,169 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 2 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:25,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6252 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:25,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-06 22:30:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-06 22:30:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 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) [2023-11-06 22:30:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2023-11-06 22:30:25,201 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2023-11-06 22:30:25,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:25,201 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2023-11-06 22:30:25,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 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) [2023-11-06 22:30:25,202 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2023-11-06 22:30:25,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:30:25,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:25,211 INFO L195 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] [2023-11-06 22:30:25,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:30:25,212 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:25,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:25,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2023-11-06 22:30:25,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:25,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67226464] [2023-11-06 22:30:25,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:25,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:25,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:25,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:25,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67226464] [2023-11-06 22:30:25,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67226464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:25,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:25,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:30:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069234409] [2023-11-06 22:30:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:25,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:25,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:25,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:25,541 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:26,012 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2023-11-06 22:30:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:30:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2023-11-06 22:30:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:26,023 INFO L225 Difference]: With dead ends: 1253 [2023-11-06 22:30:26,024 INFO L226 Difference]: Without dead ends: 1211 [2023-11-06 22:30:26,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:30:26,033 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:26,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:30:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-11-06 22:30:26,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2023-11-06 22:30:26,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 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) [2023-11-06 22:30:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2023-11-06 22:30:26,084 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2023-11-06 22:30:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:26,085 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2023-11-06 22:30:26,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,085 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2023-11-06 22:30:26,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:30:26,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:26,088 INFO L195 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] [2023-11-06 22:30:26,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:30:26,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:26,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2023-11-06 22:30:26,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:26,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378594861] [2023-11-06 22:30:26,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:26,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:26,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:26,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:26,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378594861] [2023-11-06 22:30:26,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378594861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:26,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:26,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:26,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526435529] [2023-11-06 22:30:26,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:26,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:26,198 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:26,259 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2023-11-06 22:30:26,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:26,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-06 22:30:26,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:26,267 INFO L225 Difference]: With dead ends: 1026 [2023-11-06 22:30:26,268 INFO L226 Difference]: Without dead ends: 944 [2023-11-06 22:30:26,269 INFO L412 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 [2023-11-06 22:30:26,270 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:26,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:26,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-06 22:30:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-06 22:30:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 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) [2023-11-06 22:30:26,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-11-06 22:30:26,311 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2023-11-06 22:30:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:26,314 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-11-06 22:30:26,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-11-06 22:30:26,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:30:26,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:26,317 INFO L195 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] [2023-11-06 22:30:26,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:30:26,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:26,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:26,319 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2023-11-06 22:30:26,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:26,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896085825] [2023-11-06 22:30:26,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:26,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:26,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:26,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:26,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896085825] [2023-11-06 22:30:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896085825] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:26,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:30:26,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111903513] [2023-11-06 22:30:26,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:26,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:26,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:26,744 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:27,003 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2023-11-06 22:30:27,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:30:27,004 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-06 22:30:27,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:27,010 INFO L225 Difference]: With dead ends: 1095 [2023-11-06 22:30:27,011 INFO L226 Difference]: Without dead ends: 944 [2023-11-06 22:30:27,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:30:27,012 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 4479 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:27,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 1789 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-06 22:30:27,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-06 22:30:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 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) [2023-11-06 22:30:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2023-11-06 22:30:27,050 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2023-11-06 22:30:27,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:27,051 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2023-11-06 22:30:27,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:30:27,051 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2023-11-06 22:30:27,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:30:27,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:27,052 INFO L195 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] [2023-11-06 22:30:27,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:30:27,053 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:27,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:27,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2023-11-06 22:30:27,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:27,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739927144] [2023-11-06 22:30:27,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:27,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:27,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:27,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739927144] [2023-11-06 22:30:27,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739927144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:27,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:27,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:30:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060721449] [2023-11-06 22:30:27,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:27,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:30:27,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:27,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:30:27,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:30:27,505 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2023-11-06 22:30:27,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:27,698 INFO L93 Difference]: Finished difference Result 1061 states and 1902 transitions. [2023-11-06 22:30:27,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:30:27,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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 57 [2023-11-06 22:30:27,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:27,708 INFO L225 Difference]: With dead ends: 1061 [2023-11-06 22:30:27,708 INFO L226 Difference]: Without dead ends: 1059 [2023-11-06 22:30:27,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:30:27,718 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 131 mSDsluCounter, 9348 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:27,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 10936 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:27,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-11-06 22:30:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 948. [2023-11-06 22:30:27,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 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) [2023-11-06 22:30:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2023-11-06 22:30:27,759 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2023-11-06 22:30:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:27,760 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2023-11-06 22:30:27,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2023-11-06 22:30:27,766 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2023-11-06 22:30:27,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:30:27,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:27,768 INFO L195 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] [2023-11-06 22:30:27,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:30:27,768 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:27,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2023-11-06 22:30:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:27,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327428649] [2023-11-06 22:30:27,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:27,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:27,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:27,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:27,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327428649] [2023-11-06 22:30:27,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327428649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:27,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:27,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:27,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849016399] [2023-11-06 22:30:27,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:27,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:27,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:27,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:27,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:27,849 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:27,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:27,905 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2023-11-06 22:30:27,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-06 22:30:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:27,913 INFO L225 Difference]: With dead ends: 1118 [2023-11-06 22:30:27,914 INFO L226 Difference]: Without dead ends: 1030 [2023-11-06 22:30:27,915 INFO L412 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 [2023-11-06 22:30:27,918 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:27,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-11-06 22:30:27,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2023-11-06 22:30:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 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) [2023-11-06 22:30:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2023-11-06 22:30:27,968 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2023-11-06 22:30:27,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:27,970 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2023-11-06 22:30:27,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2023-11-06 22:30:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:30:27,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:27,971 INFO L195 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] [2023-11-06 22:30:27,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:30:27,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:27,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:27,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2023-11-06 22:30:27,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:27,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539877946] [2023-11-06 22:30:27,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:27,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:28,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:28,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539877946] [2023-11-06 22:30:28,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539877946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:28,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:28,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:28,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360912917] [2023-11-06 22:30:28,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:28,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:28,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:28,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:28,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:28,047 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:28,125 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2023-11-06 22:30:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:28,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-06 22:30:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:28,136 INFO L225 Difference]: With dead ends: 1474 [2023-11-06 22:30:28,136 INFO L226 Difference]: Without dead ends: 1239 [2023-11-06 22:30:28,137 INFO L412 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 [2023-11-06 22:30:28,139 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:28,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:28,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-11-06 22:30:28,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2023-11-06 22:30:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 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) [2023-11-06 22:30:28,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2023-11-06 22:30:28,218 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2023-11-06 22:30:28,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:28,218 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2023-11-06 22:30:28,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:28,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2023-11-06 22:30:28,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:30:28,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:28,220 INFO L195 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] [2023-11-06 22:30:28,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:30:28,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:28,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:28,221 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2023-11-06 22:30:28,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:28,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340928170] [2023-11-06 22:30:28,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:28,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:28,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340928170] [2023-11-06 22:30:28,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340928170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:28,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:28,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477108805] [2023-11-06 22:30:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:28,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:28,331 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:28,533 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2023-11-06 22:30:28,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:28,533 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-06 22:30:28,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:28,545 INFO L225 Difference]: With dead ends: 2077 [2023-11-06 22:30:28,545 INFO L226 Difference]: Without dead ends: 1633 [2023-11-06 22:30:28,547 INFO L412 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 [2023-11-06 22:30:28,549 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:28,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:28,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-06 22:30:28,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2023-11-06 22:30:28,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 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) [2023-11-06 22:30:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2023-11-06 22:30:28,745 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2023-11-06 22:30:28,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:28,746 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2023-11-06 22:30:28,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:28,746 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2023-11-06 22:30:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:30:28,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:28,747 INFO L195 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] [2023-11-06 22:30:28,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:30:28,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:28,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:28,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2023-11-06 22:30:28,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:28,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894477380] [2023-11-06 22:30:28,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:28,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:28,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:28,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:28,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894477380] [2023-11-06 22:30:28,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894477380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:28,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:28,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035361780] [2023-11-06 22:30:28,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:28,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:28,844 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:29,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:29,188 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2023-11-06 22:30:29,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:29,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-06 22:30:29,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:29,206 INFO L225 Difference]: With dead ends: 3211 [2023-11-06 22:30:29,206 INFO L226 Difference]: Without dead ends: 2373 [2023-11-06 22:30:29,209 INFO L412 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 [2023-11-06 22:30:29,209 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:29,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:29,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-06 22:30:29,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2023-11-06 22:30:29,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 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) [2023-11-06 22:30:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2023-11-06 22:30:29,526 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2023-11-06 22:30:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:29,527 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2023-11-06 22:30:29,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2023-11-06 22:30:29,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:30:29,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:29,528 INFO L195 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] [2023-11-06 22:30:29,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:30:29,529 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:29,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:29,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2023-11-06 22:30:29,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:29,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561178022] [2023-11-06 22:30:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:29,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:29,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:29,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:29,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561178022] [2023-11-06 22:30:29,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561178022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:29,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:29,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:29,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718468800] [2023-11-06 22:30:29,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:29,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:30:29,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:29,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:30:29,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:30:29,613 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:30,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:30,152 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2023-11-06 22:30:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:30:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2023-11-06 22:30:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:30,180 INFO L225 Difference]: With dead ends: 5335 [2023-11-06 22:30:30,181 INFO L226 Difference]: Without dead ends: 3757 [2023-11-06 22:30:30,185 INFO L412 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 [2023-11-06 22:30:30,186 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:30,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:30:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2023-11-06 22:30:30,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2023-11-06 22:30:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 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) [2023-11-06 22:30:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2023-11-06 22:30:30,815 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2023-11-06 22:30:30,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:30,815 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2023-11-06 22:30:30,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2023-11-06 22:30:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2023-11-06 22:30:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-06 22:30:30,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:30,822 INFO L195 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] [2023-11-06 22:30:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:30:30,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:30,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:30,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1032724869, now seen corresponding path program 1 times [2023-11-06 22:30:30,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:30,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757984357] [2023-11-06 22:30:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:30,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:31,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757984357] [2023-11-06 22:30:31,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757984357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:31,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:31,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:30:31,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072791172] [2023-11-06 22:30:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:31,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:30:31,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:30:31,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:30:31,049 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-06 22:30:41,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:41,228 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2023-11-06 22:30:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:30:41,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2023-11-06 22:30:41,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:41,260 INFO L225 Difference]: With dead ends: 6010 [2023-11-06 22:30:41,260 INFO L226 Difference]: Without dead ends: 5257 [2023-11-06 22:30:41,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:30:41,263 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 2407 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2407 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 6399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1245 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:41,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2407 Valid, 815 Invalid, 6399 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1245 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-06 22:30:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2023-11-06 22:30:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2023-11-06 22:30:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.4612749762131303) internal successors, (7679), 5256 states have internal predecessors, (7679), 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) [2023-11-06 22:30:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7679 transitions. [2023-11-06 22:30:41,937 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7679 transitions. Word has length 60 [2023-11-06 22:30:41,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:41,937 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7679 transitions. [2023-11-06 22:30:41,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2023-11-06 22:30:41,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7679 transitions. [2023-11-06 22:30:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:30:41,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:41,940 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:30:41,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:30:41,941 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:41,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:41,942 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2023-11-06 22:30:41,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:41,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450508676] [2023-11-06 22:30:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:41,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:42,179 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:30:42,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:42,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450508676] [2023-11-06 22:30:42,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450508676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:42,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:42,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:30:42,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424393687] [2023-11-06 22:30:42,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:42,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:42,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:42,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:42,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:42,184 INFO L87 Difference]: Start difference. First operand 5257 states and 7679 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2023-11-06 22:30:45,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:45,536 INFO L93 Difference]: Finished difference Result 19861 states and 28485 transitions. [2023-11-06 22:30:45,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:30:45,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 77 [2023-11-06 22:30:45,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:45,617 INFO L225 Difference]: With dead ends: 19861 [2023-11-06 22:30:45,617 INFO L226 Difference]: Without dead ends: 17747 [2023-11-06 22:30:45,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:45,626 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6305 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6305 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:45,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6305 Valid, 3588 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:45,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2023-11-06 22:30:47,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2023-11-06 22:30:47,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4441595076291833) internal successors, (11263), 7800 states have internal predecessors, (11263), 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) [2023-11-06 22:30:47,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11263 transitions. [2023-11-06 22:30:47,182 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11263 transitions. Word has length 77 [2023-11-06 22:30:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:47,183 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11263 transitions. [2023-11-06 22:30:47,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2023-11-06 22:30:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11263 transitions. [2023-11-06 22:30:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:30:47,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:47,187 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:30:47,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:30:47,187 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:47,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:47,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2023-11-06 22:30:47,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:47,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884775282] [2023-11-06 22:30:47,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:47,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:47,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:47,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:30:47,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:47,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884775282] [2023-11-06 22:30:47,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884775282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:47,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:30:47,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830121270] [2023-11-06 22:30:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:47,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:47,398 INFO L87 Difference]: Start difference. First operand 7801 states and 11263 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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) [2023-11-06 22:30:51,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:51,069 INFO L93 Difference]: Finished difference Result 22821 states and 32677 transitions. [2023-11-06 22:30:51,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:30:51,070 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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 77 [2023-11-06 22:30:51,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:51,123 INFO L225 Difference]: With dead ends: 22821 [2023-11-06 22:30:51,124 INFO L226 Difference]: Without dead ends: 19859 [2023-11-06 22:30:51,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:51,133 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6353 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:51,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:51,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2023-11-06 22:30:53,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2023-11-06 22:30:53,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4313161235717309) internal successors, (16911), 11816 states have internal predecessors, (16911), 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) [2023-11-06 22:30:53,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 16911 transitions. [2023-11-06 22:30:53,418 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 16911 transitions. Word has length 77 [2023-11-06 22:30:53,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:53,418 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 16911 transitions. [2023-11-06 22:30:53,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 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) [2023-11-06 22:30:53,419 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 16911 transitions. [2023-11-06 22:30:53,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:30:53,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:53,422 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:30:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:30:53,423 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:53,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2023-11-06 22:30:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387648518] [2023-11-06 22:30:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:53,632 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:30:53,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:53,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387648518] [2023-11-06 22:30:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387648518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:30:53,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:30:53,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:30:53,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991250450] [2023-11-06 22:30:53,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:30:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:30:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:30:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:30:53,635 INFO L87 Difference]: Start difference. First operand 11817 states and 16911 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2023-11-06 22:30:58,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:58,048 INFO L93 Difference]: Finished difference Result 25781 states and 36853 transitions. [2023-11-06 22:30:58,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:30:58,049 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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 77 [2023-11-06 22:30:58,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:58,094 INFO L225 Difference]: With dead ends: 25781 [2023-11-06 22:30:58,094 INFO L226 Difference]: Without dead ends: 22819 [2023-11-06 22:30:58,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:30:58,103 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6397 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6397 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:58,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6397 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:30:58,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2023-11-06 22:31:00,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2023-11-06 22:31:00,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.427208121827411) internal successors, (21087), 14776 states have internal predecessors, (21087), 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) [2023-11-06 22:31:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21087 transitions. [2023-11-06 22:31:00,725 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21087 transitions. Word has length 77 [2023-11-06 22:31:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:00,725 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21087 transitions. [2023-11-06 22:31:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2023-11-06 22:31:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21087 transitions. [2023-11-06 22:31:00,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:31:00,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:00,729 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:31:00,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:31:00,730 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:00,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:00,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2023-11-06 22:31:00,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:00,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600576848] [2023-11-06 22:31:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:00,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:00,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:31:00,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:00,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600576848] [2023-11-06 22:31:00,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600576848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:00,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:00,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:00,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756487991] [2023-11-06 22:31:00,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:00,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:00,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:00,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:00,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:00,907 INFO L87 Difference]: Start difference. First operand 14777 states and 21087 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2023-11-06 22:31:05,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:05,603 INFO L93 Difference]: Finished difference Result 28741 states and 41029 transitions. [2023-11-06 22:31:05,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:05,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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 77 [2023-11-06 22:31:05,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:05,647 INFO L225 Difference]: With dead ends: 28741 [2023-11-06 22:31:05,647 INFO L226 Difference]: Without dead ends: 25779 [2023-11-06 22:31:05,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:31:05,658 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:05,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:05,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2023-11-06 22:31:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2023-11-06 22:31:08,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4244713842683958) internal successors, (25263), 17736 states have internal predecessors, (25263), 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) [2023-11-06 22:31:08,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25263 transitions. [2023-11-06 22:31:08,818 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25263 transitions. Word has length 77 [2023-11-06 22:31:08,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:08,819 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25263 transitions. [2023-11-06 22:31:08,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 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) [2023-11-06 22:31:08,819 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25263 transitions. [2023-11-06 22:31:08,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:31:08,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:08,823 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:31:08,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:31:08,823 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:08,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:08,824 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2023-11-06 22:31:08,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:08,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578153955] [2023-11-06 22:31:08,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:08,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:31:08,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:08,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578153955] [2023-11-06 22:31:08,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578153955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:08,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:08,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:31:08,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125816236] [2023-11-06 22:31:08,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:08,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:31:08,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:08,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:31:08,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:31:08,998 INFO L87 Difference]: Start difference. First operand 17737 states and 25263 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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) [2023-11-06 22:31:13,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:13,993 INFO L93 Difference]: Finished difference Result 31701 states and 45205 transitions. [2023-11-06 22:31:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:31:13,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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 77 [2023-11-06 22:31:13,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:14,038 INFO L225 Difference]: With dead ends: 31701 [2023-11-06 22:31:14,038 INFO L226 Difference]: Without dead ends: 28739 [2023-11-06 22:31:14,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:31:14,046 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6307 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:14,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:31:14,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2023-11-06 22:31:17,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2023-11-06 22:31:17,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.422517516308287) internal successors, (29439), 20696 states have internal predecessors, (29439), 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) [2023-11-06 22:31:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29439 transitions. [2023-11-06 22:31:17,948 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29439 transitions. Word has length 77 [2023-11-06 22:31:17,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:17,948 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29439 transitions. [2023-11-06 22:31:17,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 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) [2023-11-06 22:31:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29439 transitions. [2023-11-06 22:31:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:31:17,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:17,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:17,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:31:17,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:17,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:17,954 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2023-11-06 22:31:17,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:17,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483197528] [2023-11-06 22:31:17,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:17,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:17,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:18,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:18,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483197528] [2023-11-06 22:31:18,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483197528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:18,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:18,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:18,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129556976] [2023-11-06 22:31:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:18,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:18,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:18,090 INFO L87 Difference]: Start difference. First operand 20697 states and 29439 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-06 22:31:21,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:21,592 INFO L93 Difference]: Finished difference Result 39101 states and 55425 transitions. [2023-11-06 22:31:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:21,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-06 22:31:21,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:21,626 INFO L225 Difference]: With dead ends: 39101 [2023-11-06 22:31:21,626 INFO L226 Difference]: Without dead ends: 20699 [2023-11-06 22:31:21,645 INFO L412 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 [2023-11-06 22:31:21,645 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:21,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2023-11-06 22:31:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2023-11-06 22:31:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4082145445759846) internal successors, (29143), 20696 states have internal predecessors, (29143), 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) [2023-11-06 22:31:25,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29143 transitions. [2023-11-06 22:31:25,616 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29143 transitions. Word has length 78 [2023-11-06 22:31:25,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:25,616 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29143 transitions. [2023-11-06 22:31:25,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2023-11-06 22:31:25,617 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29143 transitions. [2023-11-06 22:31:25,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-06 22:31:25,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:25,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:25,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:31:25,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:25,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:25,620 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2023-11-06 22:31:25,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:25,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677070393] [2023-11-06 22:31:25,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:25,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:25,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:25,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677070393] [2023-11-06 22:31:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677070393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:25,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622673354] [2023-11-06 22:31:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:25,780 INFO L87 Difference]: Start difference. First operand 20697 states and 29143 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:27,196 INFO L93 Difference]: Finished difference Result 27584 states and 38837 transitions. [2023-11-06 22:31:27,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-06 22:31:27,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:27,213 INFO L225 Difference]: With dead ends: 27584 [2023-11-06 22:31:27,214 INFO L226 Difference]: Without dead ends: 9182 [2023-11-06 22:31:27,229 INFO L412 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 [2023-11-06 22:31:27,230 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:27,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:27,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2023-11-06 22:31:28,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2023-11-06 22:31:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4212821631051025) internal successors, (13036), 9173 states have internal predecessors, (13036), 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) [2023-11-06 22:31:28,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13036 transitions. [2023-11-06 22:31:28,631 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13036 transitions. Word has length 79 [2023-11-06 22:31:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:28,631 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13036 transitions. [2023-11-06 22:31:28,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:31:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13036 transitions. [2023-11-06 22:31:28,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:31:28,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:28,634 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:31:28,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:31:28,634 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:28,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:28,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2023-11-06 22:31:28,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:28,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702741042] [2023-11-06 22:31:28,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:28,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:28,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:28,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:28,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702741042] [2023-11-06 22:31:28,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702741042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:28,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:28,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:28,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681027558] [2023-11-06 22:31:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:28,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:28,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:28,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:28,760 INFO L87 Difference]: Start difference. First operand 9174 states and 13036 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-06 22:31:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:29,702 INFO L93 Difference]: Finished difference Result 12610 states and 17822 transitions. [2023-11-06 22:31:29,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:29,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-06 22:31:29,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:29,708 INFO L225 Difference]: With dead ends: 12610 [2023-11-06 22:31:29,708 INFO L226 Difference]: Without dead ends: 5744 [2023-11-06 22:31:29,716 INFO L412 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 [2023-11-06 22:31:29,716 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:29,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2023-11-06 22:31:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2023-11-06 22:31:30,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4285714285714286) internal successors, (8200), 5741 states have internal predecessors, (8200), 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) [2023-11-06 22:31:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8200 transitions. [2023-11-06 22:31:30,361 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8200 transitions. Word has length 80 [2023-11-06 22:31:30,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:30,361 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8200 transitions. [2023-11-06 22:31:30,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2023-11-06 22:31:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8200 transitions. [2023-11-06 22:31:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 22:31:30,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:30,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:30,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:31:30,364 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:30,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2023-11-06 22:31:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633878693] [2023-11-06 22:31:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:30,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:30,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633878693] [2023-11-06 22:31:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633878693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:30,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404978749] [2023-11-06 22:31:30,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:30,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:30,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:30,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:30,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:30,486 INFO L87 Difference]: Start difference. First operand 5742 states and 8200 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-06 22:31:31,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:31,034 INFO L93 Difference]: Finished difference Result 7462 states and 10568 transitions. [2023-11-06 22:31:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:31,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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 82 [2023-11-06 22:31:31,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:31,041 INFO L225 Difference]: With dead ends: 7462 [2023-11-06 22:31:31,041 INFO L226 Difference]: Without dead ends: 4028 [2023-11-06 22:31:31,045 INFO L412 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 [2023-11-06 22:31:31,045 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:31,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:31,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2023-11-06 22:31:31,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2023-11-06 22:31:31,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4433399602385686) internal successors, (5808), 4025 states have internal predecessors, (5808), 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) [2023-11-06 22:31:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5808 transitions. [2023-11-06 22:31:31,497 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5808 transitions. Word has length 82 [2023-11-06 22:31:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:31,497 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5808 transitions. [2023-11-06 22:31:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-06 22:31:31,498 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5808 transitions. [2023-11-06 22:31:31,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:31:31,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:31,499 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:31:31,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:31:31,499 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:31,500 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:31,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2023-11-06 22:31:31,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:31,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078468934] [2023-11-06 22:31:31,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:31,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:31,613 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:31,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:31,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078468934] [2023-11-06 22:31:31,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078468934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:31:31,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:31:31,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:31:31,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90629032] [2023-11-06 22:31:31,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:31:31,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:31:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:31,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:31:31,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:31:31,616 INFO L87 Difference]: Start difference. First operand 4026 states and 5808 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-06 22:31:31,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:31,839 INFO L93 Difference]: Finished difference Result 4888 states and 6980 transitions. [2023-11-06 22:31:31,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:31:31,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 84 [2023-11-06 22:31:31,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:31,844 INFO L225 Difference]: With dead ends: 4888 [2023-11-06 22:31:31,844 INFO L226 Difference]: Without dead ends: 3170 [2023-11-06 22:31:31,846 INFO L412 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 [2023-11-06 22:31:31,847 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:31,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:31:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2023-11-06 22:31:32,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2023-11-06 22:31:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.4608338597599495) internal successors, (4625), 3167 states have internal predecessors, (4625), 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) [2023-11-06 22:31:32,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4625 transitions. [2023-11-06 22:31:32,062 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4625 transitions. Word has length 84 [2023-11-06 22:31:32,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:32,062 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4625 transitions. [2023-11-06 22:31:32,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2023-11-06 22:31:32,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4625 transitions. [2023-11-06 22:31:32,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:31:32,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:32,063 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:31:32,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:31:32,064 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:32,064 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:32,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2023-11-06 22:31:32,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:32,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43332072] [2023-11-06 22:31:32,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:32,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:33,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43332072] [2023-11-06 22:31:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43332072] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198493441] [2023-11-06 22:31:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:33,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:33,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:31:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:33,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:31:33,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:33,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:33,999 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:31:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198493441] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:34,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:34,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-06 22:31:34,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745865688] [2023-11-06 22:31:34,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:34,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:31:34,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:34,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:31:34,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:31:34,003 INFO L87 Difference]: Start difference. First operand 3168 states and 4625 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 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) [2023-11-06 22:31:37,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:37,798 INFO L93 Difference]: Finished difference Result 7694 states and 10560 transitions. [2023-11-06 22:31:37,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 22:31:37,799 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 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 86 [2023-11-06 22:31:37,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:37,806 INFO L225 Difference]: With dead ends: 7694 [2023-11-06 22:31:37,806 INFO L226 Difference]: Without dead ends: 6834 [2023-11-06 22:31:37,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=616, Invalid=2576, Unknown=0, NotChecked=0, Total=3192 [2023-11-06 22:31:37,810 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 16324 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16324 SdHoareTripleChecker+Valid, 7835 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:37,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16324 Valid, 7835 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:31:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2023-11-06 22:31:38,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6504. [2023-11-06 22:31:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6502 states have (on average 1.3641956321131958) internal successors, (8870), 6503 states have internal predecessors, (8870), 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) [2023-11-06 22:31:38,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 8870 transitions. [2023-11-06 22:31:38,853 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 8870 transitions. Word has length 86 [2023-11-06 22:31:38,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:38,854 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 8870 transitions. [2023-11-06 22:31:38,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 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) [2023-11-06 22:31:38,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 8870 transitions. [2023-11-06 22:31:38,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:31:38,855 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:38,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:38,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:39,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:39,062 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:39,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2023-11-06 22:31:39,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:39,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105766308] [2023-11-06 22:31:39,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:39,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:41,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:41,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105766308] [2023-11-06 22:31:41,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105766308] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:41,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728827894] [2023-11-06 22:31:41,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:41,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:41,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:41,008 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:41,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:31:41,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:41,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:31:41,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:41,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:41,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:43,256 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:43,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728827894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:43,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:43,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-06 22:31:43,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176856301] [2023-11-06 22:31:43,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:43,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:31:43,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:43,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:31:43,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:31:43,260 INFO L87 Difference]: Start difference. First operand 6504 states and 8870 transitions. Second operand has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 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) [2023-11-06 22:31:53,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:53,803 INFO L93 Difference]: Finished difference Result 25014 states and 32630 transitions. [2023-11-06 22:31:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 22:31:53,804 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 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 87 [2023-11-06 22:31:53,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:53,826 INFO L225 Difference]: With dead ends: 25014 [2023-11-06 22:31:53,826 INFO L226 Difference]: Without dead ends: 20977 [2023-11-06 22:31:53,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=956, Invalid=4156, Unknown=0, NotChecked=0, Total=5112 [2023-11-06 22:31:53,834 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 25012 mSDsluCounter, 5267 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25012 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:53,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25012 Valid, 6787 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:31:53,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20977 states. [2023-11-06 22:31:59,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20977 to 19751. [2023-11-06 22:31:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19751 states, 19749 states have (on average 1.2955592688237378) internal successors, (25586), 19750 states have internal predecessors, (25586), 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) [2023-11-06 22:31:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19751 states to 19751 states and 25586 transitions. [2023-11-06 22:31:59,073 INFO L78 Accepts]: Start accepts. Automaton has 19751 states and 25586 transitions. Word has length 87 [2023-11-06 22:31:59,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:59,073 INFO L495 AbstractCegarLoop]: Abstraction has 19751 states and 25586 transitions. [2023-11-06 22:31:59,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 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) [2023-11-06 22:31:59,074 INFO L276 IsEmpty]: Start isEmpty. Operand 19751 states and 25586 transitions. [2023-11-06 22:31:59,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:31:59,076 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:59,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:59,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:31:59,283 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:59,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:59,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1844959644, now seen corresponding path program 1 times [2023-11-06 22:31:59,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927329201] [2023-11-06 22:31:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:59,640 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:59,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:59,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927329201] [2023-11-06 22:31:59,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927329201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:59,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757949445] [2023-11-06 22:31:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:59,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:59,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:59,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:59,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:31:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:59,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:31:59,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:00,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:01,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:01,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757949445] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:01,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:01,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-06 22:32:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107703676] [2023-11-06 22:32:01,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:01,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:32:01,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:32:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:32:01,695 INFO L87 Difference]: Start difference. First operand 19751 states and 25586 transitions. Second operand has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 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) [2023-11-06 22:32:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:14,069 INFO L93 Difference]: Finished difference Result 53572 states and 68462 transitions. [2023-11-06 22:32:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:32:14,070 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 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 87 [2023-11-06 22:32:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:14,110 INFO L225 Difference]: With dead ends: 53572 [2023-11-06 22:32:14,110 INFO L226 Difference]: Without dead ends: 38450 [2023-11-06 22:32:14,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:32:14,120 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 13690 mSDsluCounter, 7878 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13690 SdHoareTripleChecker+Valid, 9404 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:14,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13690 Valid, 9404 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:32:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38450 states. [2023-11-06 22:32:25,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38450 to 36916. [2023-11-06 22:32:25,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36916 states, 36914 states have (on average 1.269897599826624) internal successors, (46877), 36915 states have internal predecessors, (46877), 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) [2023-11-06 22:32:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36916 states to 36916 states and 46877 transitions. [2023-11-06 22:32:25,281 INFO L78 Accepts]: Start accepts. Automaton has 36916 states and 46877 transitions. Word has length 87 [2023-11-06 22:32:25,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:25,281 INFO L495 AbstractCegarLoop]: Abstraction has 36916 states and 46877 transitions. [2023-11-06 22:32:25,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 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) [2023-11-06 22:32:25,282 INFO L276 IsEmpty]: Start isEmpty. Operand 36916 states and 46877 transitions. [2023-11-06 22:32:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 22:32:25,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:25,286 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:25,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:32:25,487 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:25,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -437181294, now seen corresponding path program 1 times [2023-11-06 22:32:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:25,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877799118] [2023-11-06 22:32:25,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:25,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:26,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877799118] [2023-11-06 22:32:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877799118] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:26,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381530026] [2023-11-06 22:32:26,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:26,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:26,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:26,007 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:26,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:32:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:26,143 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:32:26,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:26,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:26,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:28,360 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:28,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381530026] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:28,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:28,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-06 22:32:28,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098207129] [2023-11-06 22:32:28,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:28,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:32:28,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:28,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:32:28,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:32:28,365 INFO L87 Difference]: Start difference. First operand 36916 states and 46877 transitions. Second operand has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 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) [2023-11-06 22:32:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:32:42,434 INFO L93 Difference]: Finished difference Result 69501 states and 87672 transitions. [2023-11-06 22:32:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:32:42,435 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 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 88 [2023-11-06 22:32:42,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:32:42,481 INFO L225 Difference]: With dead ends: 69501 [2023-11-06 22:32:42,481 INFO L226 Difference]: Without dead ends: 40194 [2023-11-06 22:32:42,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 22:32:42,500 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 15116 mSDsluCounter, 7917 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15116 SdHoareTripleChecker+Valid, 9447 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:32:42,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15116 Valid, 9447 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:32:42,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40194 states. [2023-11-06 22:32:54,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40194 to 36420. [2023-11-06 22:32:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36420 states, 36418 states have (on average 1.2618485364380252) internal successors, (45954), 36419 states have internal predecessors, (45954), 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) [2023-11-06 22:32:54,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36420 states to 36420 states and 45954 transitions. [2023-11-06 22:32:54,967 INFO L78 Accepts]: Start accepts. Automaton has 36420 states and 45954 transitions. Word has length 88 [2023-11-06 22:32:54,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:32:54,967 INFO L495 AbstractCegarLoop]: Abstraction has 36420 states and 45954 transitions. [2023-11-06 22:32:54,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 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) [2023-11-06 22:32:54,967 INFO L276 IsEmpty]: Start isEmpty. Operand 36420 states and 45954 transitions. [2023-11-06 22:32:54,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:32:54,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:32:54,971 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:32:54,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:32:55,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:55,177 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:32:55,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:32:55,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2023-11-06 22:32:55,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:32:55,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276401932] [2023-11-06 22:32:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:55,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:32:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:55,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:32:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276401932] [2023-11-06 22:32:55,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276401932] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:32:55,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079005015] [2023-11-06 22:32:55,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:32:55,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:32:55,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:32:55,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:32:55,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74b04d20-84d9-43c0-a046-8f79d9917478/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:32:55,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:32:55,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:32:55,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:32:56,532 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:56,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:32:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:32:57,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079005015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:32:57,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:32:57,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-06 22:32:57,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548378727] [2023-11-06 22:32:57,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:32:57,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:32:57,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:32:57,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:32:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:32:57,999 INFO L87 Difference]: Start difference. First operand 36420 states and 45954 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 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)