./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9260884558ccc913fea23720ea19c1107cd16edf25af23049028c38b098feff1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:41:53,832 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:41:53,919 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:41:53,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:41:53,926 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:41:53,951 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:41:53,952 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:41:53,952 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:41:53,953 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:41:53,954 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:41:53,955 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:41:53,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:41:53,956 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:41:53,957 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:41:53,957 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:41:53,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:41:53,959 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:41:53,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:41:53,960 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:41:53,961 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:41:53,961 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:41:53,962 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:41:53,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:41:53,963 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:41:53,964 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:41:53,965 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:41:53,965 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:41:53,966 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:41:53,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:41:53,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:41:53,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:41:53,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:53,969 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:41:53,969 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:41:53,969 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:41:53,970 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:41:53,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:41:53,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:41:53,971 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:41:53,971 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:41:53,971 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:41:53,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:41:53,972 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_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9260884558ccc913fea23720ea19c1107cd16edf25af23049028c38b098feff1 [2023-11-23 21:41:54,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:41:54,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:41:54,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:41:54,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:41:54,310 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:41:54,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-23 21:41:57,470 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:41:57,821 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:41:57,822 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-23 21:41:57,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/data/a79bea487/93992d7c4d9642ef8345bc08a5d08c56/FLAGd8095c0a2 [2023-11-23 21:41:57,871 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/data/a79bea487/93992d7c4d9642ef8345bc08a5d08c56 [2023-11-23 21:41:57,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:41:57,880 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:41:57,881 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:57,881 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:41:57,890 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:41:57,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:57" (1/1) ... [2023-11-23 21:41:57,896 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2758b3ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:57, skipping insertion in model container [2023-11-23 21:41:57,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:41:57" (1/1) ... [2023-11-23 21:41:57,994 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:41:58,359 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_bf8661a5-b621-4757-b151-642939a5fddf/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15864,15877] [2023-11-23 21:41:58,478 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:58,507 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:41:58,772 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_bf8661a5-b621-4757-b151-642939a5fddf/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[15864,15877] [2023-11-23 21:41:58,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:41:58,923 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:41:58,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58 WrapperNode [2023-11-23 21:41:58,924 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:41:58,925 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:58,925 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:41:58,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:41:58,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:58,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,031 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1364 [2023-11-23 21:41:59,032 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:41:59,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:41:59,033 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:41:59,033 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:41:59,045 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,052 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,079 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 21:41:59,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,125 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,151 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,172 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:41:59,209 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:41:59,209 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:41:59,209 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:41:59,210 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (1/1) ... [2023-11-23 21:41:59,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:41:59,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:41:59,245 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:41:59,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8661a5-b621-4757-b151-642939a5fddf/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:41:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:41:59,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:41:59,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:41:59,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:41:59,505 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:41:59,507 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:00,699 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:00,747 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:00,748 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:42:00,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:00 BoogieIcfgContainer [2023-11-23 21:42:00,749 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:00,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:42:00,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:42:00,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:42:00,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:41:57" (1/3) ... [2023-11-23 21:42:00,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc7495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:00, skipping insertion in model container [2023-11-23 21:42:00,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:41:58" (2/3) ... [2023-11-23 21:42:00,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc7495 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:00, skipping insertion in model container [2023-11-23 21:42:00,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:00" (3/3) ... [2023-11-23 21:42:00,758 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2023-11-23 21:42:00,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:42:00,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:42:00,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:42:00,846 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@76d32963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:42:00,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:42:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 340 states have (on average 1.7735294117647058) internal successors, (603), 349 states have internal predecessors, (603), 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) [2023-11-23 21:42:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 21:42:00,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:00,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:00,874 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:00,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:00,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2070507114, now seen corresponding path program 1 times [2023-11-23 21:42:00,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:00,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077024161] [2023-11-23 21:42:00,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:00,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:01,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:01,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077024161] [2023-11-23 21:42:01,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077024161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:01,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:01,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:01,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707637135] [2023-11-23 21:42:01,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:01,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:01,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:01,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:01,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:01,754 INFO L87 Difference]: Start difference. First operand has 350 states, 340 states have (on average 1.7735294117647058) internal successors, (603), 349 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-23 21:42:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:01,966 INFO L93 Difference]: Finished difference Result 722 states and 1216 transitions. [2023-11-23 21:42:01,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:01,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2023-11-23 21:42:01,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:01,988 INFO L225 Difference]: With dead ends: 722 [2023-11-23 21:42:01,989 INFO L226 Difference]: Without dead ends: 560 [2023-11-23 21:42:01,993 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 [2023-11-23 21:42:01,997 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 417 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:01,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 999 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:02,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2023-11-23 21:42:02,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 558. [2023-11-23 21:42:02,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 1.466786355475763) internal successors, (817), 557 states have internal predecessors, (817), 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) [2023-11-23 21:42:02,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 817 transitions. [2023-11-23 21:42:02,078 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 817 transitions. Word has length 154 [2023-11-23 21:42:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 817 transitions. [2023-11-23 21:42:02,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-23 21:42:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 817 transitions. [2023-11-23 21:42:02,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-23 21:42:02,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:02,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:02,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:42:02,091 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:02,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:02,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1178225863, now seen corresponding path program 1 times [2023-11-23 21:42:02,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:02,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567909349] [2023-11-23 21:42:02,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:02,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:02,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:02,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:02,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567909349] [2023-11-23 21:42:02,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567909349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:02,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:02,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:02,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721629298] [2023-11-23 21:42:02,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:02,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:02,793 INFO L87 Difference]: Start difference. First operand 558 states and 817 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-23 21:42:02,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:02,910 INFO L93 Difference]: Finished difference Result 1630 states and 2376 transitions. [2023-11-23 21:42:02,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:02,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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 154 [2023-11-23 21:42:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:02,918 INFO L225 Difference]: With dead ends: 1630 [2023-11-23 21:42:02,918 INFO L226 Difference]: Without dead ends: 1080 [2023-11-23 21:42:02,924 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 [2023-11-23 21:42:02,927 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 1065 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:02,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1200 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:02,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2023-11-23 21:42:02,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2023-11-23 21:42:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1077 states have (on average 1.447539461467038) internal successors, (1559), 1077 states have internal predecessors, (1559), 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) [2023-11-23 21:42:02,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1559 transitions. [2023-11-23 21:42:02,988 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1559 transitions. Word has length 154 [2023-11-23 21:42:02,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:02,990 INFO L495 AbstractCegarLoop]: Abstraction has 1078 states and 1559 transitions. [2023-11-23 21:42:02,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-11-23 21:42:02,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1559 transitions. [2023-11-23 21:42:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-23 21:42:03,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:03,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:03,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:42:03,008 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:03,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:03,010 INFO L85 PathProgramCache]: Analyzing trace with hash 836221869, now seen corresponding path program 1 times [2023-11-23 21:42:03,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:03,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001411009] [2023-11-23 21:42:03,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:03,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:03,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:03,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:03,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001411009] [2023-11-23 21:42:03,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001411009] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:03,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:03,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:03,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604015498] [2023-11-23 21:42:03,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:03,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:03,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:03,133 INFO L87 Difference]: Start difference. First operand 1078 states and 1559 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-23 21:42:03,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:03,173 INFO L93 Difference]: Finished difference Result 3198 states and 4617 transitions. [2023-11-23 21:42:03,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:03,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2023-11-23 21:42:03,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:03,186 INFO L225 Difference]: With dead ends: 3198 [2023-11-23 21:42:03,186 INFO L226 Difference]: Without dead ends: 2147 [2023-11-23 21:42:03,190 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 [2023-11-23 21:42:03,196 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 480 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:03,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 1166 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:03,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2023-11-23 21:42:03,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1080. [2023-11-23 21:42:03,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 1079 states have (on average 1.4467099165894346) internal successors, (1561), 1079 states have internal predecessors, (1561), 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) [2023-11-23 21:42:03,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1561 transitions. [2023-11-23 21:42:03,262 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1561 transitions. Word has length 155 [2023-11-23 21:42:03,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:03,263 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1561 transitions. [2023-11-23 21:42:03,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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) [2023-11-23 21:42:03,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1561 transitions. [2023-11-23 21:42:03,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-11-23 21:42:03,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:03,275 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:03,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:42:03,275 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:03,276 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:03,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1170517208, now seen corresponding path program 1 times [2023-11-23 21:42:03,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:03,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122447868] [2023-11-23 21:42:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:03,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:03,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:03,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:03,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122447868] [2023-11-23 21:42:03,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122447868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:03,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:03,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635153803] [2023-11-23 21:42:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:03,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:03,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:03,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:03,753 INFO L87 Difference]: Start difference. First operand 1080 states and 1561 transitions. Second operand has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-11-23 21:42:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:03,854 INFO L93 Difference]: Finished difference Result 3124 states and 4489 transitions. [2023-11-23 21:42:03,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:03,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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 156 [2023-11-23 21:42:03,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:03,866 INFO L225 Difference]: With dead ends: 3124 [2023-11-23 21:42:03,866 INFO L226 Difference]: Without dead ends: 2073 [2023-11-23 21:42:03,868 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 [2023-11-23 21:42:03,876 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 1019 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1019 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:03,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1019 Valid, 1211 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2023-11-23 21:42:03,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 2071. [2023-11-23 21:42:03,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2070 states have (on average 1.4256038647342995) internal successors, (2951), 2070 states have internal predecessors, (2951), 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) [2023-11-23 21:42:03,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2951 transitions. [2023-11-23 21:42:03,965 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2951 transitions. Word has length 156 [2023-11-23 21:42:03,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:03,966 INFO L495 AbstractCegarLoop]: Abstraction has 2071 states and 2951 transitions. [2023-11-23 21:42:03,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2023-11-23 21:42:03,966 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2951 transitions. [2023-11-23 21:42:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-11-23 21:42:03,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:03,971 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:03,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:42:03,972 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:03,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1273858068, now seen corresponding path program 1 times [2023-11-23 21:42:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716257712] [2023-11-23 21:42:03,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:03,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:04,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:04,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716257712] [2023-11-23 21:42:04,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716257712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:04,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:04,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:04,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47002991] [2023-11-23 21:42:04,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:04,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:04,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:04,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:04,101 INFO L87 Difference]: Start difference. First operand 2071 states and 2951 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-23 21:42:04,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:04,157 INFO L93 Difference]: Finished difference Result 6139 states and 8735 transitions. [2023-11-23 21:42:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:04,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 157 [2023-11-23 21:42:04,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:04,181 INFO L225 Difference]: With dead ends: 6139 [2023-11-23 21:42:04,181 INFO L226 Difference]: Without dead ends: 4111 [2023-11-23 21:42:04,187 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 [2023-11-23 21:42:04,188 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 466 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:04,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1433 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:04,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2023-11-23 21:42:04,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 2075. [2023-11-23 21:42:04,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2075 states, 2074 states have (on average 1.4247830279652844) internal successors, (2955), 2074 states have internal predecessors, (2955), 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) [2023-11-23 21:42:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2955 transitions. [2023-11-23 21:42:04,284 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2955 transitions. Word has length 157 [2023-11-23 21:42:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:04,285 INFO L495 AbstractCegarLoop]: Abstraction has 2075 states and 2955 transitions. [2023-11-23 21:42:04,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2023-11-23 21:42:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2955 transitions. [2023-11-23 21:42:04,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-23 21:42:04,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:04,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:04,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:42:04,290 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:04,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:04,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1948549243, now seen corresponding path program 1 times [2023-11-23 21:42:04,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:04,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9712830] [2023-11-23 21:42:04,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:04,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:04,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:04,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9712830] [2023-11-23 21:42:04,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9712830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:04,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:04,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:04,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006046672] [2023-11-23 21:42:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:04,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:04,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:04,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:04,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:04,488 INFO L87 Difference]: Start difference. First operand 2075 states and 2955 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:42:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:04,595 INFO L93 Difference]: Finished difference Result 5366 states and 7636 transitions. [2023-11-23 21:42:04,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:04,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2023-11-23 21:42:04,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:04,621 INFO L225 Difference]: With dead ends: 5366 [2023-11-23 21:42:04,622 INFO L226 Difference]: Without dead ends: 3622 [2023-11-23 21:42:04,625 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 [2023-11-23 21:42:04,626 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 407 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:04,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1358 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:04,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2023-11-23 21:42:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3620. [2023-11-23 21:42:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 3619 states have (on average 1.4020447637468914) internal successors, (5074), 3619 states have internal predecessors, (5074), 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) [2023-11-23 21:42:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5074 transitions. [2023-11-23 21:42:04,747 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5074 transitions. Word has length 158 [2023-11-23 21:42:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:04,749 INFO L495 AbstractCegarLoop]: Abstraction has 3620 states and 5074 transitions. [2023-11-23 21:42:04,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:42:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5074 transitions. [2023-11-23 21:42:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-23 21:42:04,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:04,756 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:04,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:42:04,756 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:04,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:04,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1767624450, now seen corresponding path program 1 times [2023-11-23 21:42:04,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:04,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679638118] [2023-11-23 21:42:04,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:04,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:05,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:05,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:05,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679638118] [2023-11-23 21:42:05,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679638118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:05,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:05,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:05,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657738557] [2023-11-23 21:42:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:05,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:05,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:05,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:05,201 INFO L87 Difference]: Start difference. First operand 3620 states and 5074 transitions. Second operand has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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) [2023-11-23 21:42:05,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:05,334 INFO L93 Difference]: Finished difference Result 10296 states and 14401 transitions. [2023-11-23 21:42:05,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:05,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2023-11-23 21:42:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:05,368 INFO L225 Difference]: With dead ends: 10296 [2023-11-23 21:42:05,368 INFO L226 Difference]: Without dead ends: 6712 [2023-11-23 21:42:05,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:05,375 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1057 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1652 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:05,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1652 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:05,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6712 states. [2023-11-23 21:42:05,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6712 to 6710. [2023-11-23 21:42:05,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 6709 states have (on average 1.3857504844239081) internal successors, (9297), 6709 states have internal predecessors, (9297), 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) [2023-11-23 21:42:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 9297 transitions. [2023-11-23 21:42:05,565 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 9297 transitions. Word has length 158 [2023-11-23 21:42:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:05,565 INFO L495 AbstractCegarLoop]: Abstraction has 6710 states and 9297 transitions. [2023-11-23 21:42:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.6) internal successors, (158), 4 states have internal predecessors, (158), 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) [2023-11-23 21:42:05,566 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 9297 transitions. [2023-11-23 21:42:05,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-11-23 21:42:05,576 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:05,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:05,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:42:05,577 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:05,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash -74628617, now seen corresponding path program 1 times [2023-11-23 21:42:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:05,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293996484] [2023-11-23 21:42:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:05,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:05,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293996484] [2023-11-23 21:42:05,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293996484] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:05,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:05,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:05,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097513962] [2023-11-23 21:42:05,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:05,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:05,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:05,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:05,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:05,991 INFO L87 Difference]: Start difference. First operand 6710 states and 9297 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:42:06,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:06,124 INFO L93 Difference]: Finished difference Result 13683 states and 18877 transitions. [2023-11-23 21:42:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:06,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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 158 [2023-11-23 21:42:06,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:06,163 INFO L225 Difference]: With dead ends: 13683 [2023-11-23 21:42:06,163 INFO L226 Difference]: Without dead ends: 7089 [2023-11-23 21:42:06,171 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 [2023-11-23 21:42:06,172 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 963 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 963 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:06,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [963 Valid, 1238 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2023-11-23 21:42:06,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 6934. [2023-11-23 21:42:06,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 6933 states have (on average 1.3773258329727391) internal successors, (9549), 6933 states have internal predecessors, (9549), 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) [2023-11-23 21:42:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 9549 transitions. [2023-11-23 21:42:06,388 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 9549 transitions. Word has length 158 [2023-11-23 21:42:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:06,389 INFO L495 AbstractCegarLoop]: Abstraction has 6934 states and 9549 transitions. [2023-11-23 21:42:06,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 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) [2023-11-23 21:42:06,389 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 9549 transitions. [2023-11-23 21:42:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-23 21:42:06,400 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:06,401 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:42:06,401 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:06,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:06,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2126346155, now seen corresponding path program 1 times [2023-11-23 21:42:06,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:06,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748198285] [2023-11-23 21:42:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:06,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:06,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:06,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:06,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748198285] [2023-11-23 21:42:06,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748198285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:06,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:06,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:06,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755044109] [2023-11-23 21:42:06,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:06,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:06,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:06,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:06,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:06,496 INFO L87 Difference]: Start difference. First operand 6934 states and 9549 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-23 21:42:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:06,590 INFO L93 Difference]: Finished difference Result 20078 states and 27715 transitions. [2023-11-23 21:42:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:06,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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 159 [2023-11-23 21:42:06,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:06,624 INFO L225 Difference]: With dead ends: 20078 [2023-11-23 21:42:06,624 INFO L226 Difference]: Without dead ends: 13744 [2023-11-23 21:42:06,635 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 [2023-11-23 21:42:06,637 INFO L413 NwaCegarLoop]: 610 mSDtfsCounter, 452 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:06,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 1091 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13744 states. [2023-11-23 21:42:06,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13744 to 6950. [2023-11-23 21:42:06,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6949 states have (on average 1.3764570441790185) internal successors, (9565), 6949 states have internal predecessors, (9565), 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) [2023-11-23 21:42:07,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9565 transitions. [2023-11-23 21:42:07,004 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9565 transitions. Word has length 159 [2023-11-23 21:42:07,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:07,004 INFO L495 AbstractCegarLoop]: Abstraction has 6950 states and 9565 transitions. [2023-11-23 21:42:07,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2023-11-23 21:42:07,005 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9565 transitions. [2023-11-23 21:42:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 21:42:07,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:07,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:07,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:42:07,021 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:07,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:07,022 INFO L85 PathProgramCache]: Analyzing trace with hash 775172758, now seen corresponding path program 1 times [2023-11-23 21:42:07,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:07,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532633630] [2023-11-23 21:42:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:07,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:07,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:07,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532633630] [2023-11-23 21:42:07,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532633630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:07,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:07,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:07,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002254083] [2023-11-23 21:42:07,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:07,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:07,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:07,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:07,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:07,481 INFO L87 Difference]: Start difference. First operand 6950 states and 9565 transitions. Second operand has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-23 21:42:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:07,595 INFO L93 Difference]: Finished difference Result 13891 states and 19117 transitions. [2023-11-23 21:42:07,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:07,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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 160 [2023-11-23 21:42:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:07,618 INFO L225 Difference]: With dead ends: 13891 [2023-11-23 21:42:07,618 INFO L226 Difference]: Without dead ends: 6948 [2023-11-23 21:42:07,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:07,627 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 65 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:07,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1502 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:07,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2023-11-23 21:42:07,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 6948. [2023-11-23 21:42:07,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6948 states, 6947 states have (on average 1.3762775298690082) internal successors, (9561), 6947 states have internal predecessors, (9561), 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) [2023-11-23 21:42:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 9561 transitions. [2023-11-23 21:42:07,789 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 9561 transitions. Word has length 160 [2023-11-23 21:42:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:07,789 INFO L495 AbstractCegarLoop]: Abstraction has 6948 states and 9561 transitions. [2023-11-23 21:42:07,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-23 21:42:07,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 9561 transitions. [2023-11-23 21:42:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-11-23 21:42:07,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:07,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:07,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:42:07,803 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:07,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:07,804 INFO L85 PathProgramCache]: Analyzing trace with hash -437704002, now seen corresponding path program 1 times [2023-11-23 21:42:07,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:07,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424252065] [2023-11-23 21:42:07,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:07,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:07,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:07,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:07,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424252065] [2023-11-23 21:42:07,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424252065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:07,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:07,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:07,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215616259] [2023-11-23 21:42:07,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:07,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:07,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:07,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:07,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:07,951 INFO L87 Difference]: Start difference. First operand 6948 states and 9561 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-11-23 21:42:08,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:08,054 INFO L93 Difference]: Finished difference Result 16048 states and 22141 transitions. [2023-11-23 21:42:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2023-11-23 21:42:08,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:08,075 INFO L225 Difference]: With dead ends: 16048 [2023-11-23 21:42:08,075 INFO L226 Difference]: Without dead ends: 10310 [2023-11-23 21:42:08,083 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 [2023-11-23 21:42:08,084 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 412 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:08,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 1356 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:08,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10310 states. [2023-11-23 21:42:08,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10310 to 10308. [2023-11-23 21:42:08,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10308 states, 10307 states have (on average 1.3539342194625013) internal successors, (13955), 10307 states have internal predecessors, (13955), 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) [2023-11-23 21:42:08,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10308 states to 10308 states and 13955 transitions. [2023-11-23 21:42:08,358 INFO L78 Accepts]: Start accepts. Automaton has 10308 states and 13955 transitions. Word has length 160 [2023-11-23 21:42:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:08,359 INFO L495 AbstractCegarLoop]: Abstraction has 10308 states and 13955 transitions. [2023-11-23 21:42:08,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2023-11-23 21:42:08,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10308 states and 13955 transitions. [2023-11-23 21:42:08,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-11-23 21:42:08,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:08,378 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:42:08,378 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:08,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:08,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1175474105, now seen corresponding path program 1 times [2023-11-23 21:42:08,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:08,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875317588] [2023-11-23 21:42:08,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:08,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:08,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:08,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875317588] [2023-11-23 21:42:08,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875317588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:08,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:08,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:08,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517324047] [2023-11-23 21:42:08,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:08,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:08,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:08,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:08,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:08,480 INFO L87 Difference]: Start difference. First operand 10308 states and 13955 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-23 21:42:08,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:08,680 INFO L93 Difference]: Finished difference Result 24092 states and 33283 transitions. [2023-11-23 21:42:08,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:08,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2023-11-23 21:42:08,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:08,713 INFO L225 Difference]: With dead ends: 24092 [2023-11-23 21:42:08,713 INFO L226 Difference]: Without dead ends: 14981 [2023-11-23 21:42:08,725 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 [2023-11-23 21:42:08,726 INFO L413 NwaCegarLoop]: 683 mSDtfsCounter, 307 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:08,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1041 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:08,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14981 states. [2023-11-23 21:42:08,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14981 to 13054. [2023-11-23 21:42:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13054 states, 13053 states have (on average 1.3845859189458363) internal successors, (18073), 13053 states have internal predecessors, (18073), 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) [2023-11-23 21:42:09,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13054 states to 13054 states and 18073 transitions. [2023-11-23 21:42:09,098 INFO L78 Accepts]: Start accepts. Automaton has 13054 states and 18073 transitions. Word has length 162 [2023-11-23 21:42:09,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:09,099 INFO L495 AbstractCegarLoop]: Abstraction has 13054 states and 18073 transitions. [2023-11-23 21:42:09,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2023-11-23 21:42:09,099 INFO L276 IsEmpty]: Start isEmpty. Operand 13054 states and 18073 transitions. [2023-11-23 21:42:09,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2023-11-23 21:42:09,118 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:09,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:09,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:42:09,119 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:09,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:09,120 INFO L85 PathProgramCache]: Analyzing trace with hash 240281001, now seen corresponding path program 1 times [2023-11-23 21:42:09,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:09,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296902236] [2023-11-23 21:42:09,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:09,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:09,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:09,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296902236] [2023-11-23 21:42:09,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296902236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:09,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:09,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764711789] [2023-11-23 21:42:09,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:09,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:09,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:09,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:09,264 INFO L87 Difference]: Start difference. First operand 13054 states and 18073 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-23 21:42:09,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:09,448 INFO L93 Difference]: Finished difference Result 28832 states and 40577 transitions. [2023-11-23 21:42:09,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:09,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2023-11-23 21:42:09,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:09,492 INFO L225 Difference]: With dead ends: 28832 [2023-11-23 21:42:09,492 INFO L226 Difference]: Without dead ends: 19044 [2023-11-23 21:42:09,508 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 [2023-11-23 21:42:09,509 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 302 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:09,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1001 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:09,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19044 states. [2023-11-23 21:42:09,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19044 to 17238. [2023-11-23 21:42:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17238 states, 17237 states have (on average 1.4057550617856935) internal successors, (24231), 17237 states have internal predecessors, (24231), 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) [2023-11-23 21:42:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17238 states to 17238 states and 24231 transitions. [2023-11-23 21:42:10,014 INFO L78 Accepts]: Start accepts. Automaton has 17238 states and 24231 transitions. Word has length 164 [2023-11-23 21:42:10,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:10,015 INFO L495 AbstractCegarLoop]: Abstraction has 17238 states and 24231 transitions. [2023-11-23 21:42:10,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2023-11-23 21:42:10,015 INFO L276 IsEmpty]: Start isEmpty. Operand 17238 states and 24231 transitions. [2023-11-23 21:42:10,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 21:42:10,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:10,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:10,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:42:10,034 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:10,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:10,035 INFO L85 PathProgramCache]: Analyzing trace with hash -2037294893, now seen corresponding path program 1 times [2023-11-23 21:42:10,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:10,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789588675] [2023-11-23 21:42:10,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:10,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:10,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:10,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:10,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789588675] [2023-11-23 21:42:10,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789588675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:10,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:10,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:10,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241267636] [2023-11-23 21:42:10,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:10,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:10,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:10,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:10,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:10,266 INFO L87 Difference]: Start difference. First operand 17238 states and 24231 transitions. Second operand has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-23 21:42:10,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:10,572 INFO L93 Difference]: Finished difference Result 33327 states and 47153 transitions. [2023-11-23 21:42:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:10,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 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 165 [2023-11-23 21:42:10,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:10,615 INFO L225 Difference]: With dead ends: 33327 [2023-11-23 21:42:10,616 INFO L226 Difference]: Without dead ends: 17238 [2023-11-23 21:42:10,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:10,638 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1276 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:10,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 466 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17238 states. [2023-11-23 21:42:11,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17238 to 17238. [2023-11-23 21:42:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17238 states, 17237 states have (on average 1.3919475546788884) internal successors, (23993), 17237 states have internal predecessors, (23993), 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) [2023-11-23 21:42:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17238 states to 17238 states and 23993 transitions. [2023-11-23 21:42:11,148 INFO L78 Accepts]: Start accepts. Automaton has 17238 states and 23993 transitions. Word has length 165 [2023-11-23 21:42:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:11,148 INFO L495 AbstractCegarLoop]: Abstraction has 17238 states and 23993 transitions. [2023-11-23 21:42:11,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.0) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-23 21:42:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 17238 states and 23993 transitions. [2023-11-23 21:42:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 21:42:11,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:11,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:11,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:42:11,166 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:11,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:11,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1506766674, now seen corresponding path program 1 times [2023-11-23 21:42:11,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:11,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267620589] [2023-11-23 21:42:11,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:11,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:11,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:11,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267620589] [2023-11-23 21:42:11,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267620589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:11,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:11,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:11,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924159541] [2023-11-23 21:42:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:11,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:11,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:11,743 INFO L87 Difference]: Start difference. First operand 17238 states and 23993 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-23 21:42:12,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:12,039 INFO L93 Difference]: Finished difference Result 43084 states and 61461 transitions. [2023-11-23 21:42:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:12,040 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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 165 [2023-11-23 21:42:12,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:12,129 INFO L225 Difference]: With dead ends: 43084 [2023-11-23 21:42:12,129 INFO L226 Difference]: Without dead ends: 31991 [2023-11-23 21:42:12,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:12,147 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 847 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:12,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 886 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31991 states. [2023-11-23 21:42:13,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31991 to 31989. [2023-11-23 21:42:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31989 states, 31988 states have (on average 1.40196323621358) internal successors, (44846), 31988 states have internal predecessors, (44846), 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) [2023-11-23 21:42:13,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31989 states to 31989 states and 44846 transitions. [2023-11-23 21:42:13,120 INFO L78 Accepts]: Start accepts. Automaton has 31989 states and 44846 transitions. Word has length 165 [2023-11-23 21:42:13,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:13,120 INFO L495 AbstractCegarLoop]: Abstraction has 31989 states and 44846 transitions. [2023-11-23 21:42:13,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 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) [2023-11-23 21:42:13,121 INFO L276 IsEmpty]: Start isEmpty. Operand 31989 states and 44846 transitions. [2023-11-23 21:42:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 21:42:13,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:13,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:13,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:42:13,163 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:13,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:13,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1085378914, now seen corresponding path program 1 times [2023-11-23 21:42:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447070871] [2023-11-23 21:42:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:13,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:13,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:13,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447070871] [2023-11-23 21:42:13,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447070871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:13,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:13,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:13,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197985883] [2023-11-23 21:42:13,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:13,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:13,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:13,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:13,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:13,618 INFO L87 Difference]: Start difference. First operand 31989 states and 44846 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-23 21:42:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:13,926 INFO L93 Difference]: Finished difference Result 82762 states and 116110 transitions. [2023-11-23 21:42:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2023-11-23 21:42:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:14,037 INFO L225 Difference]: With dead ends: 82762 [2023-11-23 21:42:14,038 INFO L226 Difference]: Without dead ends: 51120 [2023-11-23 21:42:14,064 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 [2023-11-23 21:42:14,065 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 947 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 947 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:14,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [947 Valid, 1238 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:14,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51120 states. [2023-11-23 21:42:15,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51120 to 51118. [2023-11-23 21:42:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51118 states, 51117 states have (on average 1.3858598900561456) internal successors, (70841), 51117 states have internal predecessors, (70841), 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) [2023-11-23 21:42:15,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51118 states to 51118 states and 70841 transitions. [2023-11-23 21:42:15,318 INFO L78 Accepts]: Start accepts. Automaton has 51118 states and 70841 transitions. Word has length 165 [2023-11-23 21:42:15,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:15,318 INFO L495 AbstractCegarLoop]: Abstraction has 51118 states and 70841 transitions. [2023-11-23 21:42:15,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 3 states have internal predecessors, (165), 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) [2023-11-23 21:42:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 51118 states and 70841 transitions. [2023-11-23 21:42:15,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2023-11-23 21:42:15,344 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:15,345 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:15,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:42:15,345 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:15,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:15,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1060593466, now seen corresponding path program 1 times [2023-11-23 21:42:15,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:15,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913494980] [2023-11-23 21:42:15,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:15,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:15,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:15,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913494980] [2023-11-23 21:42:15,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913494980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:15,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:15,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:15,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679490731] [2023-11-23 21:42:15,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:15,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:15,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:15,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:15,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:15,927 INFO L87 Difference]: Start difference. First operand 51118 states and 70841 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-11-23 21:42:16,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:16,218 INFO L93 Difference]: Finished difference Result 81420 states and 112811 transitions. [2023-11-23 21:42:16,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:16,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2023-11-23 21:42:16,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:16,569 INFO L225 Difference]: With dead ends: 81420 [2023-11-23 21:42:16,570 INFO L226 Difference]: Without dead ends: 41830 [2023-11-23 21:42:16,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:16,605 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 53 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:16,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1456 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41830 states. [2023-11-23 21:42:17,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41830 to 41830. [2023-11-23 21:42:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41830 states, 41829 states have (on average 1.3824380214683594) internal successors, (57826), 41829 states have internal predecessors, (57826), 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) [2023-11-23 21:42:17,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41830 states to 41830 states and 57826 transitions. [2023-11-23 21:42:17,653 INFO L78 Accepts]: Start accepts. Automaton has 41830 states and 57826 transitions. Word has length 167 [2023-11-23 21:42:17,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:17,654 INFO L495 AbstractCegarLoop]: Abstraction has 41830 states and 57826 transitions. [2023-11-23 21:42:17,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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) [2023-11-23 21:42:17,654 INFO L276 IsEmpty]: Start isEmpty. Operand 41830 states and 57826 transitions. [2023-11-23 21:42:17,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-23 21:42:17,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:17,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:17,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:42:17,678 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:17,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1553330368, now seen corresponding path program 1 times [2023-11-23 21:42:17,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:17,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405863719] [2023-11-23 21:42:17,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:17,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:17,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:17,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:17,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:17,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405863719] [2023-11-23 21:42:17,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405863719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:17,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:17,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:17,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55616189] [2023-11-23 21:42:17,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:17,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:17,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:17,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:17,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:17,794 INFO L87 Difference]: Start difference. First operand 41830 states and 57826 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-11-23 21:42:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:18,208 INFO L93 Difference]: Finished difference Result 99731 states and 139185 transitions. [2023-11-23 21:42:18,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 171 [2023-11-23 21:42:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:18,672 INFO L225 Difference]: With dead ends: 99731 [2023-11-23 21:42:18,673 INFO L226 Difference]: Without dead ends: 65532 [2023-11-23 21:42:18,703 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 [2023-11-23 21:42:18,704 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 293 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:18,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1000 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:18,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65532 states. [2023-11-23 21:42:19,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65532 to 59622. [2023-11-23 21:42:19,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59622 states, 59621 states have (on average 1.3961859076499892) internal successors, (83242), 59621 states have internal predecessors, (83242), 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) [2023-11-23 21:42:20,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59622 states to 59622 states and 83242 transitions. [2023-11-23 21:42:20,298 INFO L78 Accepts]: Start accepts. Automaton has 59622 states and 83242 transitions. Word has length 171 [2023-11-23 21:42:20,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:20,298 INFO L495 AbstractCegarLoop]: Abstraction has 59622 states and 83242 transitions. [2023-11-23 21:42:20,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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) [2023-11-23 21:42:20,299 INFO L276 IsEmpty]: Start isEmpty. Operand 59622 states and 83242 transitions. [2023-11-23 21:42:20,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 21:42:20,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:20,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:20,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-23 21:42:20,324 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:20,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1615415747, now seen corresponding path program 1 times [2023-11-23 21:42:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:20,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425371206] [2023-11-23 21:42:20,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:20,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:20,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:20,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:20,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:20,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425371206] [2023-11-23 21:42:20,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425371206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:20,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:20,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:20,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015731989] [2023-11-23 21:42:20,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:20,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:20,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:20,873 INFO L87 Difference]: Start difference. First operand 59622 states and 83242 transitions. Second operand has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-23 21:42:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:21,375 INFO L93 Difference]: Finished difference Result 107791 states and 150603 transitions. [2023-11-23 21:42:21,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:21,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 172 [2023-11-23 21:42:21,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:21,468 INFO L225 Difference]: With dead ends: 107791 [2023-11-23 21:42:21,468 INFO L226 Difference]: Without dead ends: 48238 [2023-11-23 21:42:21,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:21,513 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 43 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:21,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:21,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48238 states. [2023-11-23 21:42:22,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48238 to 48238. [2023-11-23 21:42:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48238 states, 48237 states have (on average 1.3982212824180609) internal successors, (67446), 48237 states have internal predecessors, (67446), 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) [2023-11-23 21:42:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48238 states to 48238 states and 67446 transitions. [2023-11-23 21:42:22,772 INFO L78 Accepts]: Start accepts. Automaton has 48238 states and 67446 transitions. Word has length 172 [2023-11-23 21:42:22,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:22,774 INFO L495 AbstractCegarLoop]: Abstraction has 48238 states and 67446 transitions. [2023-11-23 21:42:22,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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) [2023-11-23 21:42:22,774 INFO L276 IsEmpty]: Start isEmpty. Operand 48238 states and 67446 transitions. [2023-11-23 21:42:22,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 21:42:22,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:22,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:22,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-23 21:42:22,793 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:22,794 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:22,794 INFO L85 PathProgramCache]: Analyzing trace with hash -37438710, now seen corresponding path program 1 times [2023-11-23 21:42:22,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:22,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497127982] [2023-11-23 21:42:22,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:22,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:23,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:23,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:23,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497127982] [2023-11-23 21:42:23,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497127982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:23,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:23,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:23,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185976509] [2023-11-23 21:42:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:23,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:23,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:23,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:23,079 INFO L87 Difference]: Start difference. First operand 48238 states and 67446 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:23,891 INFO L93 Difference]: Finished difference Result 89034 states and 125639 transitions. [2023-11-23 21:42:23,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:23,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 179 [2023-11-23 21:42:23,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:23,982 INFO L225 Difference]: With dead ends: 89034 [2023-11-23 21:42:23,982 INFO L226 Difference]: Without dead ends: 67750 [2023-11-23 21:42:24,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:24,002 INFO L413 NwaCegarLoop]: 707 mSDtfsCounter, 404 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:24,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 1799 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:24,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67750 states. [2023-11-23 21:42:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67750 to 48186. [2023-11-23 21:42:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48186 states, 48185 states have (on average 1.3971152848396804) internal successors, (67320), 48185 states have internal predecessors, (67320), 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) [2023-11-23 21:42:25,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48186 states to 48186 states and 67320 transitions. [2023-11-23 21:42:25,033 INFO L78 Accepts]: Start accepts. Automaton has 48186 states and 67320 transitions. Word has length 179 [2023-11-23 21:42:25,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:25,033 INFO L495 AbstractCegarLoop]: Abstraction has 48186 states and 67320 transitions. [2023-11-23 21:42:25,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:25,034 INFO L276 IsEmpty]: Start isEmpty. Operand 48186 states and 67320 transitions. [2023-11-23 21:42:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 21:42:25,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:25,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 21:42:25,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:25,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1502050143, now seen corresponding path program 1 times [2023-11-23 21:42:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544167274] [2023-11-23 21:42:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:25,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:25,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544167274] [2023-11-23 21:42:25,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544167274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:25,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:25,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012543328] [2023-11-23 21:42:25,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:25,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:25,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:25,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:25,390 INFO L87 Difference]: Start difference. First operand 48186 states and 67320 transitions. Second operand has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:25,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:25,650 INFO L93 Difference]: Finished difference Result 84373 states and 117810 transitions. [2023-11-23 21:42:25,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:25,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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 179 [2023-11-23 21:42:25,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:25,711 INFO L225 Difference]: With dead ends: 84373 [2023-11-23 21:42:25,711 INFO L226 Difference]: Without dead ends: 48176 [2023-11-23 21:42:25,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:25,736 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 23 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:25,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1416 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48176 states. [2023-11-23 21:42:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48176 to 48176. [2023-11-23 21:42:27,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48176 states, 48175 states have (on average 1.3970939283860924) internal successors, (67305), 48175 states have internal predecessors, (67305), 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) [2023-11-23 21:42:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48176 states to 48176 states and 67305 transitions. [2023-11-23 21:42:27,100 INFO L78 Accepts]: Start accepts. Automaton has 48176 states and 67305 transitions. Word has length 179 [2023-11-23 21:42:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:27,101 INFO L495 AbstractCegarLoop]: Abstraction has 48176 states and 67305 transitions. [2023-11-23 21:42:27,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.75) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:27,101 INFO L276 IsEmpty]: Start isEmpty. Operand 48176 states and 67305 transitions. [2023-11-23 21:42:27,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-11-23 21:42:27,119 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:27,120 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:27,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 21:42:27,120 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:27,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:27,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2043283841, now seen corresponding path program 1 times [2023-11-23 21:42:27,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:27,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921475100] [2023-11-23 21:42:27,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:27,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:27,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:27,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:27,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921475100] [2023-11-23 21:42:27,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921475100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:27,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:27,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:27,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440011196] [2023-11-23 21:42:27,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:27,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:27,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:27,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:27,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:27,602 INFO L87 Difference]: Start difference. First operand 48176 states and 67305 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:28,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:28,277 INFO L93 Difference]: Finished difference Result 92062 states and 128635 transitions. [2023-11-23 21:42:28,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:28,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 179 [2023-11-23 21:42:28,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:28,348 INFO L225 Difference]: With dead ends: 92062 [2023-11-23 21:42:28,349 INFO L226 Difference]: Without dead ends: 44148 [2023-11-23 21:42:28,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:28,391 INFO L413 NwaCegarLoop]: 746 mSDtfsCounter, 1005 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:28,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1560 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44148 states. [2023-11-23 21:42:29,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44148 to 43991. [2023-11-23 21:42:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43991 states, 43990 states have (on average 1.3964992043646283) internal successors, (61432), 43990 states have internal predecessors, (61432), 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) [2023-11-23 21:42:29,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43991 states to 43991 states and 61432 transitions. [2023-11-23 21:42:29,110 INFO L78 Accepts]: Start accepts. Automaton has 43991 states and 61432 transitions. Word has length 179 [2023-11-23 21:42:29,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:29,110 INFO L495 AbstractCegarLoop]: Abstraction has 43991 states and 61432 transitions. [2023-11-23 21:42:29,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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) [2023-11-23 21:42:29,110 INFO L276 IsEmpty]: Start isEmpty. Operand 43991 states and 61432 transitions. [2023-11-23 21:42:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:42:29,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:29,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:29,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-23 21:42:29,123 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:29,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:29,124 INFO L85 PathProgramCache]: Analyzing trace with hash -806192530, now seen corresponding path program 1 times [2023-11-23 21:42:29,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424927240] [2023-11-23 21:42:29,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:29,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:29,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:29,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424927240] [2023-11-23 21:42:29,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424927240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:29,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:29,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:29,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766269151] [2023-11-23 21:42:29,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:29,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:29,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:29,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:29,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:29,490 INFO L87 Difference]: Start difference. First operand 43991 states and 61432 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:29,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:29,853 INFO L93 Difference]: Finished difference Result 86753 states and 121479 transitions. [2023-11-23 21:42:29,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:29,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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 181 [2023-11-23 21:42:29,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:29,916 INFO L225 Difference]: With dead ends: 86753 [2023-11-23 21:42:29,916 INFO L226 Difference]: Without dead ends: 43991 [2023-11-23 21:42:29,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:29,944 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1218 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:29,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 438 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43991 states. [2023-11-23 21:42:30,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43991 to 43991. [2023-11-23 21:42:30,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43991 states, 43990 states have (on average 1.3840872925664924) internal successors, (60886), 43990 states have internal predecessors, (60886), 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) [2023-11-23 21:42:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43991 states to 43991 states and 60886 transitions. [2023-11-23 21:42:30,684 INFO L78 Accepts]: Start accepts. Automaton has 43991 states and 60886 transitions. Word has length 181 [2023-11-23 21:42:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:30,685 INFO L495 AbstractCegarLoop]: Abstraction has 43991 states and 60886 transitions. [2023-11-23 21:42:30,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 43991 states and 60886 transitions. [2023-11-23 21:42:30,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:42:30,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:30,696 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:30,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 21:42:30,697 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:30,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:30,697 INFO L85 PathProgramCache]: Analyzing trace with hash 119980169, now seen corresponding path program 1 times [2023-11-23 21:42:30,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:30,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153064676] [2023-11-23 21:42:30,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:30,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:31,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:31,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:31,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153064676] [2023-11-23 21:42:31,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153064676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:31,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:31,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216680517] [2023-11-23 21:42:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:31,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:31,010 INFO L87 Difference]: Start difference. First operand 43991 states and 60886 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:31,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:31,335 INFO L93 Difference]: Finished difference Result 86973 states and 120669 transitions. [2023-11-23 21:42:31,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:31,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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 181 [2023-11-23 21:42:31,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:31,392 INFO L225 Difference]: With dead ends: 86973 [2023-11-23 21:42:31,393 INFO L226 Difference]: Without dead ends: 43991 [2023-11-23 21:42:31,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:31,419 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1210 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:31,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 436 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43991 states. [2023-11-23 21:42:31,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43991 to 43991. [2023-11-23 21:42:31,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43991 states, 43990 states have (on average 1.3716753807683564) internal successors, (60340), 43990 states have internal predecessors, (60340), 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) [2023-11-23 21:42:32,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43991 states to 43991 states and 60340 transitions. [2023-11-23 21:42:32,211 INFO L78 Accepts]: Start accepts. Automaton has 43991 states and 60340 transitions. Word has length 181 [2023-11-23 21:42:32,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:32,211 INFO L495 AbstractCegarLoop]: Abstraction has 43991 states and 60340 transitions. [2023-11-23 21:42:32,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:32,212 INFO L276 IsEmpty]: Start isEmpty. Operand 43991 states and 60340 transitions. [2023-11-23 21:42:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:42:32,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:32,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:32,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-23 21:42:32,222 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:32,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:32,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1068363740, now seen corresponding path program 1 times [2023-11-23 21:42:32,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:32,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424956656] [2023-11-23 21:42:32,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:32,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:32,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424956656] [2023-11-23 21:42:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424956656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:32,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:32,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:42:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380882290] [2023-11-23 21:42:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:32,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:32,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:32,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:32,722 INFO L87 Difference]: Start difference. First operand 43991 states and 60340 transitions. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:33,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:33,112 INFO L93 Difference]: Finished difference Result 120513 states and 167462 transitions. [2023-11-23 21:42:33,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:33,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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 181 [2023-11-23 21:42:33,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:33,228 INFO L225 Difference]: With dead ends: 120513 [2023-11-23 21:42:33,228 INFO L226 Difference]: Without dead ends: 85567 [2023-11-23 21:42:33,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:42:33,262 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 717 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:33,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [717 Valid, 894 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85567 states. [2023-11-23 21:42:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85567 to 85565. [2023-11-23 21:42:34,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85565 states, 85564 states have (on average 1.373708569024356) internal successors, (117540), 85564 states have internal predecessors, (117540), 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) [2023-11-23 21:42:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85565 states to 85565 states and 117540 transitions. [2023-11-23 21:42:34,714 INFO L78 Accepts]: Start accepts. Automaton has 85565 states and 117540 transitions. Word has length 181 [2023-11-23 21:42:34,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:34,715 INFO L495 AbstractCegarLoop]: Abstraction has 85565 states and 117540 transitions. [2023-11-23 21:42:34,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 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) [2023-11-23 21:42:34,715 INFO L276 IsEmpty]: Start isEmpty. Operand 85565 states and 117540 transitions. [2023-11-23 21:42:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:42:34,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:34,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:34,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-23 21:42:34,729 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:34,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash -236162137, now seen corresponding path program 1 times [2023-11-23 21:42:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:34,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468806426] [2023-11-23 21:42:34,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:34,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468806426] [2023-11-23 21:42:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468806426] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:35,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:35,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:42:35,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660191006] [2023-11-23 21:42:35,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:35,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:42:35,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:42:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:42:35,473 INFO L87 Difference]: Start difference. First operand 85565 states and 117540 transitions. Second operand has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2023-11-23 21:42:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:36,025 INFO L93 Difference]: Finished difference Result 179311 states and 250450 transitions. [2023-11-23 21:42:36,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:42:36,026 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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 181 [2023-11-23 21:42:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:36,209 INFO L225 Difference]: With dead ends: 179311 [2023-11-23 21:42:36,209 INFO L226 Difference]: Without dead ends: 145211 [2023-11-23 21:42:36,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:42:36,247 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 989 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:36,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 1679 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:36,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145211 states. [2023-11-23 21:42:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145211 to 102605. [2023-11-23 21:42:38,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102605 states, 102604 states have (on average 1.3781334061050252) internal successors, (141402), 102604 states have internal predecessors, (141402), 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) [2023-11-23 21:42:38,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102605 states to 102605 states and 141402 transitions. [2023-11-23 21:42:38,613 INFO L78 Accepts]: Start accepts. Automaton has 102605 states and 141402 transitions. Word has length 181 [2023-11-23 21:42:38,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:38,614 INFO L495 AbstractCegarLoop]: Abstraction has 102605 states and 141402 transitions. [2023-11-23 21:42:38,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.2) internal successors, (181), 5 states have internal predecessors, (181), 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) [2023-11-23 21:42:38,614 INFO L276 IsEmpty]: Start isEmpty. Operand 102605 states and 141402 transitions. [2023-11-23 21:42:38,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-23 21:42:38,635 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:38,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:38,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-23 21:42:38,636 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:38,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:38,637 INFO L85 PathProgramCache]: Analyzing trace with hash -58043465, now seen corresponding path program 1 times [2023-11-23 21:42:38,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:38,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310840737] [2023-11-23 21:42:38,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:38,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:38,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:38,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:38,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310840737] [2023-11-23 21:42:38,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310840737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:38,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:38,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:38,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748476374] [2023-11-23 21:42:38,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:38,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:38,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:38,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:38,794 INFO L87 Difference]: Start difference. First operand 102605 states and 141402 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 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)