./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme --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 a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:04:15,485 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:04:15,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 12:04:15,559 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:04:15,560 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:04:15,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:04:15,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:04:15,589 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:04:15,590 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:04:15,591 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:04:15,591 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:04:15,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:04:15,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:04:15,593 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:04:15,594 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:04:15,595 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:04:15,595 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:04:15,596 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:04:15,596 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:04:15,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:04:15,597 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:04:15,598 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:04:15,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:04:15,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:04:15,599 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:04:15,600 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:04:15,600 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:04:15,601 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:04:15,601 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:04:15,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:04:15,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:04:15,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:15,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:04:15,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:04:15,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:04:15,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:04:15,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:04:15,605 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:04:15,605 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:04:15,605 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:04:15,606 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:04:15,606 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:04:15,606 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_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a44e961521da9b8f4535724e185f402d94bec27d495ab6df10e2b3c1ffa4513a [2023-11-26 12:04:15,922 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:04:15,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:04:15,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:04:15,956 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:04:15,957 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:04:15,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-26 12:04:19,231 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:04:19,532 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:04:19,532 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-26 12:04:19,549 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/data/b22d60a61/1e09b9b41c494011b49020317767ec29/FLAGe04aeb47d [2023-11-26 12:04:19,563 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/data/b22d60a61/1e09b9b41c494011b49020317767ec29 [2023-11-26 12:04:19,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:04:19,567 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:04:19,569 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:19,569 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:04:19,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:04:19,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:19" (1/1) ... [2023-11-26 12:04:19,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e64a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:19, skipping insertion in model container [2023-11-26 12:04:19,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:04:19" (1/1) ... [2023-11-26 12:04:19,618 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:04:19,897 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_55f43cc5-87b3-46d5-ae95-d225e2a3d846/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-11-26 12:04:19,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:19,913 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:04:20,003 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_55f43cc5-87b3-46d5-ae95-d225e2a3d846/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c[16936,16949] [2023-11-26 12:04:20,003 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:04:20,029 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:04:20,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20 WrapperNode [2023-11-26 12:04:20,029 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:04:20,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:20,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:04:20,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:04:20,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,095 INFO L138 Inliner]: procedures = 25, calls = 17, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 443 [2023-11-26 12:04:20,095 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:04:20,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:04:20,096 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:04:20,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:04:20,107 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,107 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,112 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,131 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 12:04:20,131 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,132 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,144 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,154 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,168 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:04:20,169 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:04:20,169 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:04:20,169 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:04:20,170 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (1/1) ... [2023-11-26 12:04:20,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:04:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:20,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:04:20,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:04:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:04:20,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:04:20,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:04:20,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:04:20,518 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:04:20,523 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:04:21,200 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:04:21,273 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:04:21,273 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 12:04:21,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:21 BoogieIcfgContainer [2023-11-26 12:04:21,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:04:21,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:04:21,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:04:21,279 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:04:21,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:04:19" (1/3) ... [2023-11-26 12:04:21,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b03080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:21, skipping insertion in model container [2023-11-26 12:04:21,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:04:20" (2/3) ... [2023-11-26 12:04:21,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b03080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:04:21, skipping insertion in model container [2023-11-26 12:04:21,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:04:21" (3/3) ... [2023-11-26 12:04:21,282 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.6.ufo.BOUNDED-12.pals.c [2023-11-26 12:04:21,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:04:21,299 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 12:04:21,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:04:21,356 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;@16b47790, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:04:21,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 12:04:21,360 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 114 states have (on average 1.7982456140350878) internal successors, (205), 115 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:21,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 12:04:21,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:21,369 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] [2023-11-26 12:04:21,370 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:21,374 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:21,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1951872268, now seen corresponding path program 1 times [2023-11-26 12:04:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124675625] [2023-11-26 12:04:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:21,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:21,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124675625] [2023-11-26 12:04:21,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124675625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:21,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:21,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:21,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208966961] [2023-11-26 12:04:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:21,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:22,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:22,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:22,017 INFO L87 Difference]: Start difference. First operand has 116 states, 114 states have (on average 1.7982456140350878) internal successors, (205), 115 states have internal predecessors, (205), 0 states have call successors, (0), 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 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:22,187 INFO L93 Difference]: Finished difference Result 190 states and 327 transitions. [2023-11-26 12:04:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:22,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2023-11-26 12:04:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:22,200 INFO L225 Difference]: With dead ends: 190 [2023-11-26 12:04:22,200 INFO L226 Difference]: Without dead ends: 114 [2023-11-26 12:04:22,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:22,207 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 0 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:22,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 550 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:22,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-26 12:04:22,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2023-11-26 12:04:22,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 1.407079646017699) internal successors, (159), 113 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) [2023-11-26 12:04:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 159 transitions. [2023-11-26 12:04:22,251 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 159 transitions. Word has length 34 [2023-11-26 12:04:22,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:22,252 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 159 transitions. [2023-11-26 12:04:22,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,252 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 159 transitions. [2023-11-26 12:04:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 12:04:22,256 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:22,256 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] [2023-11-26 12:04:22,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:04:22,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:22,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:22,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1418311254, now seen corresponding path program 1 times [2023-11-26 12:04:22,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881660848] [2023-11-26 12:04:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:22,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881660848] [2023-11-26 12:04:22,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881660848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:22,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:22,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:22,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242208835] [2023-11-26 12:04:22,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:22,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:22,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:22,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:22,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:22,457 INFO L87 Difference]: Start difference. First operand 114 states and 159 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:22,521 INFO L93 Difference]: Finished difference Result 244 states and 373 transitions. [2023-11-26 12:04:22,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:22,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-26 12:04:22,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:22,526 INFO L225 Difference]: With dead ends: 244 [2023-11-26 12:04:22,526 INFO L226 Difference]: Without dead ends: 175 [2023-11-26 12:04:22,527 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 [2023-11-26 12:04:22,529 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 90 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:22,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 322 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:22,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-26 12:04:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 173. [2023-11-26 12:04:22,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.494186046511628) internal successors, (257), 172 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 257 transitions. [2023-11-26 12:04:22,549 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 257 transitions. Word has length 74 [2023-11-26 12:04:22,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:22,550 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 257 transitions. [2023-11-26 12:04:22,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:22,550 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 257 transitions. [2023-11-26 12:04:22,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-26 12:04:22,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:22,555 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] [2023-11-26 12:04:22,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:04:22,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:22,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:22,556 INFO L85 PathProgramCache]: Analyzing trace with hash 209399157, now seen corresponding path program 1 times [2023-11-26 12:04:22,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:22,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020097031] [2023-11-26 12:04:22,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:22,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:22,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:22,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020097031] [2023-11-26 12:04:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020097031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:22,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:22,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:22,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601799085] [2023-11-26 12:04:22,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:22,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:22,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:22,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:22,877 INFO L87 Difference]: Start difference. First operand 173 states and 257 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:23,105 INFO L93 Difference]: Finished difference Result 1069 states and 1741 transitions. [2023-11-26 12:04:23,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:23,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-26 12:04:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:23,118 INFO L225 Difference]: With dead ends: 1069 [2023-11-26 12:04:23,118 INFO L226 Difference]: Without dead ends: 941 [2023-11-26 12:04:23,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:23,128 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 2006 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:23,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 1159 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2023-11-26 12:04:23,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 299. [2023-11-26 12:04:23,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 1.5570469798657718) internal successors, (464), 298 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 464 transitions. [2023-11-26 12:04:23,178 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 464 transitions. Word has length 74 [2023-11-26 12:04:23,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:23,178 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 464 transitions. [2023-11-26 12:04:23,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,179 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 464 transitions. [2023-11-26 12:04:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 12:04:23,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:23,181 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] [2023-11-26 12:04:23,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:04:23,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:23,182 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:23,182 INFO L85 PathProgramCache]: Analyzing trace with hash -2111620221, now seen corresponding path program 1 times [2023-11-26 12:04:23,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:23,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744512103] [2023-11-26 12:04:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:23,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:23,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744512103] [2023-11-26 12:04:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744512103] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:23,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:23,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 12:04:23,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792806237] [2023-11-26 12:04:23,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:23,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:04:23,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:23,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:04:23,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:23,597 INFO L87 Difference]: Start difference. First operand 299 states and 464 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:23,629 INFO L93 Difference]: Finished difference Result 313 states and 481 transitions. [2023-11-26 12:04:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:04:23,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2023-11-26 12:04:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:23,634 INFO L225 Difference]: With dead ends: 313 [2023-11-26 12:04:23,635 INFO L226 Difference]: Without dead ends: 311 [2023-11-26 12:04:23,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:04:23,647 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:23,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 458 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:23,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2023-11-26 12:04:23,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 307. [2023-11-26 12:04:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.542483660130719) internal successors, (472), 306 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 472 transitions. [2023-11-26 12:04:23,676 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 472 transitions. Word has length 75 [2023-11-26 12:04:23,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:23,677 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 472 transitions. [2023-11-26 12:04:23,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,678 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 472 transitions. [2023-11-26 12:04:23,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 12:04:23,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:23,686 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:23,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:04:23,686 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:23,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:23,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1034715555, now seen corresponding path program 1 times [2023-11-26 12:04:23,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:23,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821677775] [2023-11-26 12:04:23,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:23,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:23,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:23,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821677775] [2023-11-26 12:04:23,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821677775] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:23,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:23,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:23,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598207159] [2023-11-26 12:04:23,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:23,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:23,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:23,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:23,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:23,834 INFO L87 Difference]: Start difference. First operand 307 states and 472 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:23,873 INFO L93 Difference]: Finished difference Result 803 states and 1278 transitions. [2023-11-26 12:04:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:23,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-26 12:04:23,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:23,882 INFO L225 Difference]: With dead ends: 803 [2023-11-26 12:04:23,883 INFO L226 Difference]: Without dead ends: 541 [2023-11-26 12:04:23,885 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 [2023-11-26 12:04:23,889 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 75 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:23,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 266 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:23,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-11-26 12:04:23,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 539. [2023-11-26 12:04:23,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 538 states have (on average 1.5724907063197027) internal successors, (846), 538 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 846 transitions. [2023-11-26 12:04:23,926 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 846 transitions. Word has length 76 [2023-11-26 12:04:23,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:23,927 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 846 transitions. [2023-11-26 12:04:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:23,928 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 846 transitions. [2023-11-26 12:04:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 12:04:23,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:23,931 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] [2023-11-26 12:04:23,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:04:23,932 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:23,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:23,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1680632190, now seen corresponding path program 1 times [2023-11-26 12:04:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:23,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150903844] [2023-11-26 12:04:23,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:23,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:24,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:24,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:24,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150903844] [2023-11-26 12:04:24,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150903844] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:24,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:24,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:24,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656604606] [2023-11-26 12:04:24,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:24,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:24,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:24,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:24,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:24,052 INFO L87 Difference]: Start difference. First operand 539 states and 846 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:24,089 INFO L93 Difference]: Finished difference Result 1033 states and 1647 transitions. [2023-11-26 12:04:24,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:24,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-26 12:04:24,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:24,095 INFO L225 Difference]: With dead ends: 1033 [2023-11-26 12:04:24,095 INFO L226 Difference]: Without dead ends: 771 [2023-11-26 12:04:24,096 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 [2023-11-26 12:04:24,097 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 102 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:24,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 358 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:24,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-11-26 12:04:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 769. [2023-11-26 12:04:24,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.5807291666666667) internal successors, (1214), 768 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1214 transitions. [2023-11-26 12:04:24,129 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1214 transitions. Word has length 76 [2023-11-26 12:04:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:24,129 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 1214 transitions. [2023-11-26 12:04:24,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1214 transitions. [2023-11-26 12:04:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 12:04:24,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:24,131 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] [2023-11-26 12:04:24,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:04:24,131 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:24,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -2045463766, now seen corresponding path program 1 times [2023-11-26 12:04:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919263846] [2023-11-26 12:04:24,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:24,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:24,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919263846] [2023-11-26 12:04:24,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919263846] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:24,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:24,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298028081] [2023-11-26 12:04:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:24,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:24,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:24,206 INFO L87 Difference]: Start difference. First operand 769 states and 1214 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:24,256 INFO L93 Difference]: Finished difference Result 2117 states and 3380 transitions. [2023-11-26 12:04:24,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:24,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-26 12:04:24,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:24,265 INFO L225 Difference]: With dead ends: 2117 [2023-11-26 12:04:24,265 INFO L226 Difference]: Without dead ends: 1395 [2023-11-26 12:04:24,267 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 [2023-11-26 12:04:24,268 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 82 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:24,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 316 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:24,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2023-11-26 12:04:24,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1393. [2023-11-26 12:04:24,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1393 states, 1392 states have (on average 1.5804597701149425) internal successors, (2200), 1392 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 2200 transitions. [2023-11-26 12:04:24,324 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 2200 transitions. Word has length 77 [2023-11-26 12:04:24,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:24,324 INFO L495 AbstractCegarLoop]: Abstraction has 1393 states and 2200 transitions. [2023-11-26 12:04:24,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 2200 transitions. [2023-11-26 12:04:24,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 12:04:24,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:24,326 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] [2023-11-26 12:04:24,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:04:24,326 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:24,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:24,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1775774794, now seen corresponding path program 1 times [2023-11-26 12:04:24,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:24,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099444177] [2023-11-26 12:04:24,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:24,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:24,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:24,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099444177] [2023-11-26 12:04:24,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099444177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:24,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:24,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:24,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158456939] [2023-11-26 12:04:24,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:24,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:24,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:24,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:24,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:24,403 INFO L87 Difference]: Start difference. First operand 1393 states and 2200 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:24,506 INFO L93 Difference]: Finished difference Result 3893 states and 6170 transitions. [2023-11-26 12:04:24,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:24,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-26 12:04:24,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:24,520 INFO L225 Difference]: With dead ends: 3893 [2023-11-26 12:04:24,521 INFO L226 Difference]: Without dead ends: 2547 [2023-11-26 12:04:24,522 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 [2023-11-26 12:04:24,524 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 86 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:24,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 329 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2023-11-26 12:04:24,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2545. [2023-11-26 12:04:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2545 states, 2544 states have (on average 1.569182389937107) internal successors, (3992), 2544 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2545 states to 2545 states and 3992 transitions. [2023-11-26 12:04:24,620 INFO L78 Accepts]: Start accepts. Automaton has 2545 states and 3992 transitions. Word has length 77 [2023-11-26 12:04:24,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:24,621 INFO L495 AbstractCegarLoop]: Abstraction has 2545 states and 3992 transitions. [2023-11-26 12:04:24,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2545 states and 3992 transitions. [2023-11-26 12:04:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 12:04:24,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:24,622 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] [2023-11-26 12:04:24,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 12:04:24,623 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:24,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1329434998, now seen corresponding path program 1 times [2023-11-26 12:04:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307347741] [2023-11-26 12:04:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:24,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:24,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:24,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307347741] [2023-11-26 12:04:24,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307347741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:24,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:24,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:24,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752626370] [2023-11-26 12:04:24,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:24,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:24,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:24,689 INFO L87 Difference]: Start difference. First operand 2545 states and 3992 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:24,812 INFO L93 Difference]: Finished difference Result 7157 states and 11210 transitions. [2023-11-26 12:04:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:24,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-26 12:04:24,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:24,839 INFO L225 Difference]: With dead ends: 7157 [2023-11-26 12:04:24,839 INFO L226 Difference]: Without dead ends: 4659 [2023-11-26 12:04:24,842 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 [2023-11-26 12:04:24,843 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 94 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:24,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 345 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:24,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2023-11-26 12:04:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 4657. [2023-11-26 12:04:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4657 states, 4656 states have (on average 1.5498281786941581) internal successors, (7216), 4656 states have internal predecessors, (7216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4657 states to 4657 states and 7216 transitions. [2023-11-26 12:04:25,055 INFO L78 Accepts]: Start accepts. Automaton has 4657 states and 7216 transitions. Word has length 77 [2023-11-26 12:04:25,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:25,056 INFO L495 AbstractCegarLoop]: Abstraction has 4657 states and 7216 transitions. [2023-11-26 12:04:25,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4657 states and 7216 transitions. [2023-11-26 12:04:25,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-26 12:04:25,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:25,057 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] [2023-11-26 12:04:25,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 12:04:25,058 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:25,058 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:25,058 INFO L85 PathProgramCache]: Analyzing trace with hash -965134422, now seen corresponding path program 1 times [2023-11-26 12:04:25,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:25,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005344573] [2023-11-26 12:04:25,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:25,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:25,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:25,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:25,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005344573] [2023-11-26 12:04:25,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005344573] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:25,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:25,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:25,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445117462] [2023-11-26 12:04:25,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:25,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:25,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:25,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:25,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:25,127 INFO L87 Difference]: Start difference. First operand 4657 states and 7216 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:25,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:25,415 INFO L93 Difference]: Finished difference Result 13109 states and 20210 transitions. [2023-11-26 12:04:25,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:25,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-26 12:04:25,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:25,467 INFO L225 Difference]: With dead ends: 13109 [2023-11-26 12:04:25,467 INFO L226 Difference]: Without dead ends: 8499 [2023-11-26 12:04:25,475 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 [2023-11-26 12:04:25,476 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 98 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:25,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 358 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:25,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2023-11-26 12:04:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8497. [2023-11-26 12:04:25,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8496 states have (on average 1.5235404896421845) internal successors, (12944), 8496 states have internal predecessors, (12944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:25,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 12944 transitions. [2023-11-26 12:04:25,943 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 12944 transitions. Word has length 77 [2023-11-26 12:04:25,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:25,944 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 12944 transitions. [2023-11-26 12:04:25,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:25,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 12944 transitions. [2023-11-26 12:04:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 12:04:25,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:25,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:25,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 12:04:25,951 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:25,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:25,952 INFO L85 PathProgramCache]: Analyzing trace with hash -284094702, now seen corresponding path program 1 times [2023-11-26 12:04:25,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:25,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856296052] [2023-11-26 12:04:25,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:25,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:26,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:26,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856296052] [2023-11-26 12:04:26,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856296052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:26,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:26,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:26,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385371647] [2023-11-26 12:04:26,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:26,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:26,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:26,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:26,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:26,154 INFO L87 Difference]: Start difference. First operand 8497 states and 12944 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:26,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:26,451 INFO L93 Difference]: Finished difference Result 16949 states and 25842 transitions. [2023-11-26 12:04:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:26,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-11-26 12:04:26,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:26,505 INFO L225 Difference]: With dead ends: 16949 [2023-11-26 12:04:26,505 INFO L226 Difference]: Without dead ends: 8499 [2023-11-26 12:04:26,513 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 [2023-11-26 12:04:26,514 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 80 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:26,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 352 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8499 states. [2023-11-26 12:04:26,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8499 to 8497. [2023-11-26 12:04:26,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8497 states, 8496 states have (on average 1.512241054613936) internal successors, (12848), 8496 states have internal predecessors, (12848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8497 states to 8497 states and 12848 transitions. [2023-11-26 12:04:26,918 INFO L78 Accepts]: Start accepts. Automaton has 8497 states and 12848 transitions. Word has length 106 [2023-11-26 12:04:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:26,918 INFO L495 AbstractCegarLoop]: Abstraction has 8497 states and 12848 transitions. [2023-11-26 12:04:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 8497 states and 12848 transitions. [2023-11-26 12:04:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 12:04:26,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:26,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:26,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 12:04:26,924 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:26,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1503048371, now seen corresponding path program 1 times [2023-11-26 12:04:26,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:26,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946938779] [2023-11-26 12:04:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:26,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:27,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:27,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946938779] [2023-11-26 12:04:27,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946938779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:27,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:27,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:27,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788731409] [2023-11-26 12:04:27,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:27,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:27,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:27,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:27,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:27,140 INFO L87 Difference]: Start difference. First operand 8497 states and 12848 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:27,305 INFO L93 Difference]: Finished difference Result 12725 states and 19250 transitions. [2023-11-26 12:04:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-11-26 12:04:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:27,317 INFO L225 Difference]: With dead ends: 12725 [2023-11-26 12:04:27,317 INFO L226 Difference]: Without dead ends: 4275 [2023-11-26 12:04:27,326 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 [2023-11-26 12:04:27,328 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 74 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:27,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 333 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4275 states. [2023-11-26 12:04:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4275 to 4273. [2023-11-26 12:04:27,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4273 states, 4272 states have (on average 1.4981273408239701) internal successors, (6400), 4272 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4273 states to 4273 states and 6400 transitions. [2023-11-26 12:04:27,541 INFO L78 Accepts]: Start accepts. Automaton has 4273 states and 6400 transitions. Word has length 106 [2023-11-26 12:04:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:27,542 INFO L495 AbstractCegarLoop]: Abstraction has 4273 states and 6400 transitions. [2023-11-26 12:04:27,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 4273 states and 6400 transitions. [2023-11-26 12:04:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 12:04:27,545 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:27,545 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:27,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 12:04:27,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:27,546 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1392947500, now seen corresponding path program 1 times [2023-11-26 12:04:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973947568] [2023-11-26 12:04:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:27,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:27,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973947568] [2023-11-26 12:04:27,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973947568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:27,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:27,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:27,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672695825] [2023-11-26 12:04:27,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:27,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:27,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:27,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:27,730 INFO L87 Difference]: Start difference. First operand 4273 states and 6400 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:27,830 INFO L93 Difference]: Finished difference Result 6389 states and 9578 transitions. [2023-11-26 12:04:27,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:27,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-11-26 12:04:27,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:27,836 INFO L225 Difference]: With dead ends: 6389 [2023-11-26 12:04:27,836 INFO L226 Difference]: Without dead ends: 2163 [2023-11-26 12:04:27,840 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 [2023-11-26 12:04:27,842 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 68 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:27,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 311 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:27,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2023-11-26 12:04:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2161. [2023-11-26 12:04:27,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2160 states have (on average 1.4814814814814814) internal successors, (3200), 2160 states have internal predecessors, (3200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 3200 transitions. [2023-11-26 12:04:27,920 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 3200 transitions. Word has length 106 [2023-11-26 12:04:27,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:27,920 INFO L495 AbstractCegarLoop]: Abstraction has 2161 states and 3200 transitions. [2023-11-26 12:04:27,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 3200 transitions. [2023-11-26 12:04:27,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 12:04:27,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:27,923 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:27,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 12:04:27,923 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:27,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:27,924 INFO L85 PathProgramCache]: Analyzing trace with hash -886662155, now seen corresponding path program 1 times [2023-11-26 12:04:27,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:27,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961595903] [2023-11-26 12:04:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:27,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961595903] [2023-11-26 12:04:28,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961595903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:28,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:28,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726017002] [2023-11-26 12:04:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:28,121 INFO L87 Difference]: Start difference. First operand 2161 states and 3200 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:28,167 INFO L93 Difference]: Finished difference Result 3221 states and 4778 transitions. [2023-11-26 12:04:28,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:28,167 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2023-11-26 12:04:28,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:28,170 INFO L225 Difference]: With dead ends: 3221 [2023-11-26 12:04:28,170 INFO L226 Difference]: Without dead ends: 1107 [2023-11-26 12:04:28,173 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 [2023-11-26 12:04:28,174 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 62 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:28,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 292 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2023-11-26 12:04:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1105. [2023-11-26 12:04:28,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1104 states have (on average 1.460144927536232) internal successors, (1612), 1104 states have internal predecessors, (1612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1612 transitions. [2023-11-26 12:04:28,213 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1612 transitions. Word has length 106 [2023-11-26 12:04:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:28,214 INFO L495 AbstractCegarLoop]: Abstraction has 1105 states and 1612 transitions. [2023-11-26 12:04:28,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:28,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1612 transitions. [2023-11-26 12:04:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 12:04:28,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:28,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:28,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 12:04:28,217 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:28,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:28,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1065460118, now seen corresponding path program 1 times [2023-11-26 12:04:28,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:28,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42536738] [2023-11-26 12:04:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:30,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42536738] [2023-11-26 12:04:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42536738] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666100353] [2023-11-26 12:04:30,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:30,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:30,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:30,511 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:30,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 12:04:30,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:30,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:04:30,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:30,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:04:30,980 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:04:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:04:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666100353] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:04:31,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:04:31,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 4] total 17 [2023-11-26 12:04:31,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255182547] [2023-11-26 12:04:31,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:04:31,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 12:04:31,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:31,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 12:04:31,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2023-11-26 12:04:31,681 INFO L87 Difference]: Start difference. First operand 1105 states and 1612 transitions. Second operand has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:39,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:39,458 INFO L93 Difference]: Finished difference Result 10039 states and 14563 transitions. [2023-11-26 12:04:39,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-26 12:04:39,459 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 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 106 [2023-11-26 12:04:39,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:39,483 INFO L225 Difference]: With dead ends: 10039 [2023-11-26 12:04:39,483 INFO L226 Difference]: Without dead ends: 9317 [2023-11-26 12:04:39,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2118 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=972, Invalid=5348, Unknown=0, NotChecked=0, Total=6320 [2023-11-26 12:04:39,491 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 7072 mSDsluCounter, 2217 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7072 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:39,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7072 Valid, 2468 Invalid, 2117 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [76 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 12:04:39,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9317 states. [2023-11-26 12:04:39,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9317 to 6747. [2023-11-26 12:04:39,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6747 states, 6746 states have (on average 1.4636821820337977) internal successors, (9874), 6746 states have internal predecessors, (9874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6747 states to 6747 states and 9874 transitions. [2023-11-26 12:04:39,798 INFO L78 Accepts]: Start accepts. Automaton has 6747 states and 9874 transitions. Word has length 106 [2023-11-26 12:04:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:39,799 INFO L495 AbstractCegarLoop]: Abstraction has 6747 states and 9874 transitions. [2023-11-26 12:04:39,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.058823529411764) internal successors, (307), 17 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:39,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6747 states and 9874 transitions. [2023-11-26 12:04:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:39,802 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:39,802 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:39,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 12:04:40,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 12:04:40,012 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:40,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:40,012 INFO L85 PathProgramCache]: Analyzing trace with hash 266809497, now seen corresponding path program 1 times [2023-11-26 12:04:40,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:40,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182945500] [2023-11-26 12:04:40,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:40,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:40,371 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 12:04:40,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:40,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182945500] [2023-11-26 12:04:40,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182945500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:40,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:40,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:40,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900334051] [2023-11-26 12:04:40,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:40,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:40,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:40,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:40,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:40,375 INFO L87 Difference]: Start difference. First operand 6747 states and 9874 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:41,091 INFO L93 Difference]: Finished difference Result 26764 states and 39451 transitions. [2023-11-26 12:04:41,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:41,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:41,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:41,143 INFO L225 Difference]: With dead ends: 26764 [2023-11-26 12:04:41,144 INFO L226 Difference]: Without dead ends: 23336 [2023-11-26 12:04:41,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:41,153 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1240 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1402 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:41,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1402 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23336 states. [2023-11-26 12:04:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23336 to 10053. [2023-11-26 12:04:41,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10053 states, 10052 states have (on average 1.4608038201352964) internal successors, (14684), 10052 states have internal predecessors, (14684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10053 states to 10053 states and 14684 transitions. [2023-11-26 12:04:41,657 INFO L78 Accepts]: Start accepts. Automaton has 10053 states and 14684 transitions. Word has length 107 [2023-11-26 12:04:41,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:41,658 INFO L495 AbstractCegarLoop]: Abstraction has 10053 states and 14684 transitions. [2023-11-26 12:04:41,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 10053 states and 14684 transitions. [2023-11-26 12:04:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:41,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:41,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:41,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 12:04:41,662 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:41,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1895745897, now seen corresponding path program 1 times [2023-11-26 12:04:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360984002] [2023-11-26 12:04:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 12:04:41,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:41,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360984002] [2023-11-26 12:04:41,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360984002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:41,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:41,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:41,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380040673] [2023-11-26 12:04:41,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:41,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:41,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:41,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:41,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:41,964 INFO L87 Difference]: Start difference. First operand 10053 states and 14684 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:42,884 INFO L93 Difference]: Finished difference Result 30070 states and 44261 transitions. [2023-11-26 12:04:42,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:42,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:42,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:42,950 INFO L225 Difference]: With dead ends: 30070 [2023-11-26 12:04:42,951 INFO L226 Difference]: Without dead ends: 26642 [2023-11-26 12:04:42,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:42,958 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 1319 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:42,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 1288 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:42,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26642 states. [2023-11-26 12:04:43,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26642 to 13359. [2023-11-26 12:04:43,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13359 states, 13358 states have (on average 1.4593502021260667) internal successors, (19494), 13358 states have internal predecessors, (19494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13359 states to 13359 states and 19494 transitions. [2023-11-26 12:04:43,681 INFO L78 Accepts]: Start accepts. Automaton has 13359 states and 19494 transitions. Word has length 107 [2023-11-26 12:04:43,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:43,681 INFO L495 AbstractCegarLoop]: Abstraction has 13359 states and 19494 transitions. [2023-11-26 12:04:43,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 8 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 13359 states and 19494 transitions. [2023-11-26 12:04:43,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:43,684 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:43,684 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:43,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 12:04:43,685 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:43,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash 597289877, now seen corresponding path program 1 times [2023-11-26 12:04:43,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:43,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048709630] [2023-11-26 12:04:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:43,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 12:04:43,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:43,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048709630] [2023-11-26 12:04:43,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048709630] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:43,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:43,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:43,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303694578] [2023-11-26 12:04:43,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:43,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:43,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:43,994 INFO L87 Difference]: Start difference. First operand 13359 states and 19494 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:44,939 INFO L93 Difference]: Finished difference Result 33376 states and 49071 transitions. [2023-11-26 12:04:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:44,939 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:44,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:44,992 INFO L225 Difference]: With dead ends: 33376 [2023-11-26 12:04:44,992 INFO L226 Difference]: Without dead ends: 29948 [2023-11-26 12:04:44,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:45,000 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1408 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:45,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 1341 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:45,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29948 states. [2023-11-26 12:04:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29948 to 16665. [2023-11-26 12:04:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16665 states, 16664 states have (on average 1.4584733557369178) internal successors, (24304), 16664 states have internal predecessors, (24304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16665 states to 16665 states and 24304 transitions. [2023-11-26 12:04:45,687 INFO L78 Accepts]: Start accepts. Automaton has 16665 states and 24304 transitions. Word has length 107 [2023-11-26 12:04:45,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:45,688 INFO L495 AbstractCegarLoop]: Abstraction has 16665 states and 24304 transitions. [2023-11-26 12:04:45,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 16665 states and 24304 transitions. [2023-11-26 12:04:45,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:45,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:45,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:45,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 12:04:45,692 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:45,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash -27209837, now seen corresponding path program 1 times [2023-11-26 12:04:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650678422] [2023-11-26 12:04:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:45,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:45,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 12:04:45,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:45,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650678422] [2023-11-26 12:04:45,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650678422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:45,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:45,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:45,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075788666] [2023-11-26 12:04:45,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:45,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:45,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:45,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:45,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:45,900 INFO L87 Difference]: Start difference. First operand 16665 states and 24304 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:46,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:46,917 INFO L93 Difference]: Finished difference Result 36682 states and 53881 transitions. [2023-11-26 12:04:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:46,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:46,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:46,975 INFO L225 Difference]: With dead ends: 36682 [2023-11-26 12:04:46,975 INFO L226 Difference]: Without dead ends: 33254 [2023-11-26 12:04:46,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:46,984 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 1212 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:46,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 1542 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:47,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33254 states. [2023-11-26 12:04:47,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33254 to 19971. [2023-11-26 12:04:48,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19971 states, 19970 states have (on average 1.457886830245368) internal successors, (29114), 19970 states have internal predecessors, (29114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19971 states to 19971 states and 29114 transitions. [2023-11-26 12:04:48,064 INFO L78 Accepts]: Start accepts. Automaton has 19971 states and 29114 transitions. Word has length 107 [2023-11-26 12:04:48,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:48,064 INFO L495 AbstractCegarLoop]: Abstraction has 19971 states and 29114 transitions. [2023-11-26 12:04:48,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 8 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:48,065 INFO L276 IsEmpty]: Start isEmpty. Operand 19971 states and 29114 transitions. [2023-11-26 12:04:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:48,084 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:48,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:48,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 12:04:48,085 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:48,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:48,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1499224475, now seen corresponding path program 1 times [2023-11-26 12:04:48,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:48,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836282539] [2023-11-26 12:04:48,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:48,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 12:04:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836282539] [2023-11-26 12:04:48,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836282539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:48,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:48,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:48,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291792535] [2023-11-26 12:04:48,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:48,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:48,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:48,392 INFO L87 Difference]: Start difference. First operand 19971 states and 29114 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:49,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:49,764 INFO L93 Difference]: Finished difference Result 39988 states and 58691 transitions. [2023-11-26 12:04:49,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:49,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:49,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:49,810 INFO L225 Difference]: With dead ends: 39988 [2023-11-26 12:04:49,810 INFO L226 Difference]: Without dead ends: 36560 [2023-11-26 12:04:49,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:49,823 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1152 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:49,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1152 Valid, 1828 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:49,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36560 states. [2023-11-26 12:04:50,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36560 to 23277. [2023-11-26 12:04:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23277 states, 23276 states have (on average 1.4574669187145557) internal successors, (33924), 23276 states have internal predecessors, (33924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23277 states to 23277 states and 33924 transitions. [2023-11-26 12:04:50,702 INFO L78 Accepts]: Start accepts. Automaton has 23277 states and 33924 transitions. Word has length 107 [2023-11-26 12:04:50,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:50,702 INFO L495 AbstractCegarLoop]: Abstraction has 23277 states and 33924 transitions. [2023-11-26 12:04:50,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:50,702 INFO L276 IsEmpty]: Start isEmpty. Operand 23277 states and 33924 transitions. [2023-11-26 12:04:50,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 12:04:50,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:50,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:50,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 12:04:50,707 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:50,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:50,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1149916516, now seen corresponding path program 1 times [2023-11-26 12:04:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:50,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717692068] [2023-11-26 12:04:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:50,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 12:04:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:50,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717692068] [2023-11-26 12:04:50,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717692068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:50,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:50,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-26 12:04:50,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642200524] [2023-11-26 12:04:50,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:50,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 12:04:50,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:50,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 12:04:50,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-26 12:04:50,941 INFO L87 Difference]: Start difference. First operand 23277 states and 33924 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:52,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:52,492 INFO L93 Difference]: Finished difference Result 42158 states and 61804 transitions. [2023-11-26 12:04:52,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 12:04:52,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2023-11-26 12:04:52,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:52,546 INFO L225 Difference]: With dead ends: 42158 [2023-11-26 12:04:52,547 INFO L226 Difference]: Without dead ends: 39451 [2023-11-26 12:04:52,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-26 12:04:52,558 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 1145 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:52,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 1668 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 12:04:52,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39451 states. [2023-11-26 12:04:53,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39451 to 26168. [2023-11-26 12:04:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26168 states, 26167 states have (on average 1.4567202965567319) internal successors, (38118), 26167 states have internal predecessors, (38118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26168 states to 26168 states and 38118 transitions. [2023-11-26 12:04:53,915 INFO L78 Accepts]: Start accepts. Automaton has 26168 states and 38118 transitions. Word has length 107 [2023-11-26 12:04:53,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:53,915 INFO L495 AbstractCegarLoop]: Abstraction has 26168 states and 38118 transitions. [2023-11-26 12:04:53,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:53,916 INFO L276 IsEmpty]: Start isEmpty. Operand 26168 states and 38118 transitions. [2023-11-26 12:04:53,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 12:04:53,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:53,921 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:53,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 12:04:53,921 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:53,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:53,922 INFO L85 PathProgramCache]: Analyzing trace with hash 909174283, now seen corresponding path program 1 times [2023-11-26 12:04:53,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:53,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358051348] [2023-11-26 12:04:53,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:53,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:54,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:54,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358051348] [2023-11-26 12:04:54,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358051348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:04:54,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:04:54,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:04:54,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185472511] [2023-11-26 12:04:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:04:54,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:04:54,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:04:54,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:04:54,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:04:54,111 INFO L87 Difference]: Start difference. First operand 26168 states and 38118 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:04:54,788 INFO L93 Difference]: Finished difference Result 37525 states and 54492 transitions. [2023-11-26 12:04:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:04:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2023-11-26 12:04:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:04:54,810 INFO L225 Difference]: With dead ends: 37525 [2023-11-26 12:04:54,811 INFO L226 Difference]: Without dead ends: 11404 [2023-11-26 12:04:54,838 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 [2023-11-26 12:04:54,839 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 40 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:04:54,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 291 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:04:54,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11404 states. [2023-11-26 12:04:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11404 to 11202. [2023-11-26 12:04:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11202 states, 11201 states have (on average 1.4333541648067136) internal successors, (16055), 11201 states have internal predecessors, (16055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 16055 transitions. [2023-11-26 12:04:55,736 INFO L78 Accepts]: Start accepts. Automaton has 11202 states and 16055 transitions. Word has length 110 [2023-11-26 12:04:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:04:55,737 INFO L495 AbstractCegarLoop]: Abstraction has 11202 states and 16055 transitions. [2023-11-26 12:04:55,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:04:55,737 INFO L276 IsEmpty]: Start isEmpty. Operand 11202 states and 16055 transitions. [2023-11-26 12:04:55,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-26 12:04:55,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:04:55,739 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:04:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 12:04:55,740 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 12:04:55,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:04:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash -264273110, now seen corresponding path program 1 times [2023-11-26 12:04:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:04:55,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718672418] [2023-11-26 12:04:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:04:55,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:57,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:04:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718672418] [2023-11-26 12:04:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718672418] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 12:04:57,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074412894] [2023-11-26 12:04:57,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:04:57,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 12:04:57,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:04:57,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 12:04:57,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f43cc5-87b3-46d5-ae95-d225e2a3d846/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 12:04:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:04:57,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 12:04:57,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 12:04:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:04:58,716 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 12:05:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 12:05:00,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074412894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 12:05:00,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 12:05:00,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2023-11-26 12:05:00,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469547736] [2023-11-26 12:05:00,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 12:05:00,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-26 12:05:00,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:05:00,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-26 12:05:00,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2023-11-26 12:05:00,441 INFO L87 Difference]: Start difference. First operand 11202 states and 16055 transitions. Second operand has 24 states, 24 states have (on average 12.291666666666666) internal successors, (295), 23 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)