./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label33.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/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_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label33.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/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_73ef08dc-7c90-4c03-be80-6c121c0ef335/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 7166744474158954665024dc8c8b3712d72f905c129b3d2684427468d2506fe1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:48:52,173 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:48:52,264 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:48:52,270 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:48:52,271 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:48:52,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:48:52,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:48:52,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:48:52,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:48:52,307 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:48:52,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:48:52,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:48:52,309 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:48:52,310 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:48:52,310 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:48:52,313 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:48:52,315 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:48:52,319 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:48:52,320 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:48:52,322 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:48:52,323 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:48:52,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:48:52,349 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:48:52,349 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:48:52,349 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:48:52,350 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:48:52,350 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:48:52,351 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:48:52,352 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:48:52,352 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:48:52,354 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:48:52,354 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:52,354 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:48:52,355 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:48:52,355 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:48:52,355 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:48:52,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:48:52,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:48:52,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:48:52,356 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:48:52,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:48:52,357 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:48:52,357 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_73ef08dc-7c90-4c03-be80-6c121c0ef335/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7166744474158954665024dc8c8b3712d72f905c129b3d2684427468d2506fe1 [2023-11-26 11:48:52,680 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:48:52,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:48:52,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:48:52,716 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:48:52,716 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:48:52,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/eca-rers2012/Problem11_label33.c [2023-11-26 11:48:55,760 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:48:56,158 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:48:56,159 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/sv-benchmarks/c/eca-rers2012/Problem11_label33.c [2023-11-26 11:48:56,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/data/d0217ed31/dfa023021242435a842c247ceae17e07/FLAG57212f7c6 [2023-11-26 11:48:56,203 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/data/d0217ed31/dfa023021242435a842c247ceae17e07 [2023-11-26 11:48:56,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:48:56,207 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:48:56,208 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:56,209 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:48:56,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:48:56,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:56" (1/1) ... [2023-11-26 11:48:56,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6797bc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:56, skipping insertion in model container [2023-11-26 11:48:56,222 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:48:56" (1/1) ... [2023-11-26 11:48:56,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:48:56,554 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_73ef08dc-7c90-4c03-be80-6c121c0ef335/sv-benchmarks/c/eca-rers2012/Problem11_label33.c[4121,4134] [2023-11-26 11:48:56,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:56,964 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:48:56,990 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_73ef08dc-7c90-4c03-be80-6c121c0ef335/sv-benchmarks/c/eca-rers2012/Problem11_label33.c[4121,4134] [2023-11-26 11:48:57,155 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:48:57,173 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:48:57,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57 WrapperNode [2023-11-26 11:48:57,174 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:48:57,175 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:57,175 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:48:57,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:48:57,184 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,222 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,357 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1000 [2023-11-26 11:48:57,357 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:48:57,358 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:48:57,358 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:48:57,358 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:48:57,370 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,370 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,491 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 11:48:57,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,647 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:48:57,683 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:48:57,683 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:48:57,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:48:57,684 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (1/1) ... [2023-11-26 11:48:57,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:48:57,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:48:57,728 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:48:57,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:48:57,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:48:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:48:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:48:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:48:57,863 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:48:57,866 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:48:59,635 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:48:59,700 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:48:59,700 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:48:59,701 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:59 BoogieIcfgContainer [2023-11-26 11:48:59,701 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:48:59,704 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:48:59,704 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:48:59,708 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:48:59,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:48:56" (1/3) ... [2023-11-26 11:48:59,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc40170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:59, skipping insertion in model container [2023-11-26 11:48:59,709 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:48:57" (2/3) ... [2023-11-26 11:48:59,710 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc40170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:48:59, skipping insertion in model container [2023-11-26 11:48:59,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:48:59" (3/3) ... [2023-11-26 11:48:59,711 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label33.c [2023-11-26 11:48:59,732 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:48:59,732 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:48:59,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:48:59,806 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;@685a83fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:48:59,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:48:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 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 11:48:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:48:59,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:48:59,820 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] [2023-11-26 11:48:59,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:48:59,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:48:59,827 INFO L85 PathProgramCache]: Analyzing trace with hash -225324441, now seen corresponding path program 1 times [2023-11-26 11:48:59,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:48:59,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63051113] [2023-11-26 11:48:59,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:48:59,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:48:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:48:59,994 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 11:48:59,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:48:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63051113] [2023-11-26 11:48:59,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63051113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:48:59,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:48:59,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:48:59,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233087695] [2023-11-26 11:48:59,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:00,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:49:00,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:00,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:49:00,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:00,037 INFO L87 Difference]: Start difference. First operand has 221 states, 219 states have (on average 1.917808219178082) internal successors, (420), 220 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 11:49:00,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:00,087 INFO L93 Difference]: Finished difference Result 441 states and 839 transitions. [2023-11-26 11:49:00,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:49:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-26 11:49:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:00,102 INFO L225 Difference]: With dead ends: 441 [2023-11-26 11:49:00,102 INFO L226 Difference]: Without dead ends: 219 [2023-11-26 11:49:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:49:00,110 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:00,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:49:00,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-26 11:49:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2023-11-26 11:49:00,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 218 states have (on average 1.628440366972477) internal successors, (355), 218 states have internal predecessors, (355), 0 states have call successors, (0), 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 11:49:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 355 transitions. [2023-11-26 11:49:00,191 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 355 transitions. Word has length 27 [2023-11-26 11:49:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:00,192 INFO L495 AbstractCegarLoop]: Abstraction has 219 states and 355 transitions. [2023-11-26 11:49:00,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 11:49:00,193 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 355 transitions. [2023-11-26 11:49:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:49:00,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:00,194 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] [2023-11-26 11:49:00,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:49:00,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:00,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash 646807109, now seen corresponding path program 1 times [2023-11-26 11:49:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:00,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892040635] [2023-11-26 11:49:00,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:00,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:00,403 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 11:49:00,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:00,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892040635] [2023-11-26 11:49:00,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892040635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:00,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:00,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:00,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172670199] [2023-11-26 11:49:00,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:00,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:00,407 INFO L87 Difference]: Start difference. First operand 219 states and 355 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 11:49:01,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:01,614 INFO L93 Difference]: Finished difference Result 630 states and 1026 transitions. [2023-11-26 11:49:01,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:01,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-26 11:49:01,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:01,618 INFO L225 Difference]: With dead ends: 630 [2023-11-26 11:49:01,618 INFO L226 Difference]: Without dead ends: 412 [2023-11-26 11:49:01,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:49:01,621 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 196 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:01,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 155 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:49:01,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-26 11:49:01,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2023-11-26 11:49:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.4549878345498783) internal successors, (598), 411 states have internal predecessors, (598), 0 states have call successors, (0), 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 11:49:01,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 598 transitions. [2023-11-26 11:49:01,665 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 598 transitions. Word has length 27 [2023-11-26 11:49:01,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:01,665 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 598 transitions. [2023-11-26 11:49:01,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 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 11:49:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 598 transitions. [2023-11-26 11:49:01,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 11:49:01,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:01,673 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, 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] [2023-11-26 11:49:01,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:49:01,674 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:01,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1663664701, now seen corresponding path program 1 times [2023-11-26 11:49:01,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:01,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395175159] [2023-11-26 11:49:01,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:01,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:01,991 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 11:49:01,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:01,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395175159] [2023-11-26 11:49:01,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395175159] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:01,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:01,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463296410] [2023-11-26 11:49:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:01,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:01,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:01,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:02,000 INFO L87 Difference]: Start difference. First operand 412 states and 598 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:49:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:03,080 INFO L93 Difference]: Finished difference Result 1210 states and 1762 transitions. [2023-11-26 11:49:03,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2023-11-26 11:49:03,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:03,087 INFO L225 Difference]: With dead ends: 1210 [2023-11-26 11:49:03,087 INFO L226 Difference]: Without dead ends: 799 [2023-11-26 11:49:03,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:49:03,091 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 142 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:03,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 118 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:49:03,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-26 11:49:03,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 788. [2023-11-26 11:49:03,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 787 states have (on average 1.3748411689961881) internal successors, (1082), 787 states have internal predecessors, (1082), 0 states have call successors, (0), 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 11:49:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1082 transitions. [2023-11-26 11:49:03,125 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1082 transitions. Word has length 95 [2023-11-26 11:49:03,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:03,126 INFO L495 AbstractCegarLoop]: Abstraction has 788 states and 1082 transitions. [2023-11-26 11:49:03,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 2 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:49:03,126 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1082 transitions. [2023-11-26 11:49:03,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 11:49:03,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:03,129 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, 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] [2023-11-26 11:49:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:49:03,129 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:03,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1742639768, now seen corresponding path program 1 times [2023-11-26 11:49:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:03,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919499384] [2023-11-26 11:49:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:03,487 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 11:49:03,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:03,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919499384] [2023-11-26 11:49:03,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919499384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:03,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:03,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:49:03,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115740416] [2023-11-26 11:49:03,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:03,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:03,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:03,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:03,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:03,492 INFO L87 Difference]: Start difference. First operand 788 states and 1082 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:49:04,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:04,436 INFO L93 Difference]: Finished difference Result 1944 states and 2611 transitions. [2023-11-26 11:49:04,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:04,437 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2023-11-26 11:49:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:04,445 INFO L225 Difference]: With dead ends: 1944 [2023-11-26 11:49:04,445 INFO L226 Difference]: Without dead ends: 1157 [2023-11-26 11:49:04,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:49:04,448 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:04,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 188 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:04,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2023-11-26 11:49:04,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1156. [2023-11-26 11:49:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1156 states, 1155 states have (on average 1.270995670995671) internal successors, (1468), 1155 states have internal predecessors, (1468), 0 states have call successors, (0), 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 11:49:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1156 states to 1156 states and 1468 transitions. [2023-11-26 11:49:04,481 INFO L78 Accepts]: Start accepts. Automaton has 1156 states and 1468 transitions. Word has length 97 [2023-11-26 11:49:04,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:04,482 INFO L495 AbstractCegarLoop]: Abstraction has 1156 states and 1468 transitions. [2023-11-26 11:49:04,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:49:04,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1156 states and 1468 transitions. [2023-11-26 11:49:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-11-26 11:49:04,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:04,486 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:49:04,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:49:04,486 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:04,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -938555148, now seen corresponding path program 1 times [2023-11-26 11:49:04,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:04,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526936099] [2023-11-26 11:49:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:04,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:04,839 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 11:49:04,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:04,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526936099] [2023-11-26 11:49:04,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526936099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:04,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:04,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327944385] [2023-11-26 11:49:04,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:04,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:04,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:04,849 INFO L87 Difference]: Start difference. First operand 1156 states and 1468 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:05,854 INFO L93 Difference]: Finished difference Result 2518 states and 3348 transitions. [2023-11-26 11:49:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:05,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2023-11-26 11:49:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:05,866 INFO L225 Difference]: With dead ends: 2518 [2023-11-26 11:49:05,867 INFO L226 Difference]: Without dead ends: 1547 [2023-11-26 11:49:05,869 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 11:49:05,875 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 207 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:05,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-11-26 11:49:05,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1544. [2023-11-26 11:49:05,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1544 states, 1543 states have (on average 1.2935839274141283) internal successors, (1996), 1543 states have internal predecessors, (1996), 0 states have call successors, (0), 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 11:49:05,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1996 transitions. [2023-11-26 11:49:05,918 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1996 transitions. Word has length 154 [2023-11-26 11:49:05,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:05,921 INFO L495 AbstractCegarLoop]: Abstraction has 1544 states and 1996 transitions. [2023-11-26 11:49:05,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:49:05,921 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1996 transitions. [2023-11-26 11:49:05,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2023-11-26 11:49:05,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:05,930 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:49:05,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:49:05,931 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:05,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash 332349908, now seen corresponding path program 1 times [2023-11-26 11:49:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:05,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825011361] [2023-11-26 11:49:05,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2023-11-26 11:49:06,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:06,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825011361] [2023-11-26 11:49:06,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825011361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:06,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:06,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:06,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923845089] [2023-11-26 11:49:06,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:06,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:06,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:06,390 INFO L87 Difference]: Start difference. First operand 1544 states and 1996 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:49:07,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:07,583 INFO L93 Difference]: Finished difference Result 3649 states and 4814 transitions. [2023-11-26 11:49:07,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:07,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 209 [2023-11-26 11:49:07,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:07,597 INFO L225 Difference]: With dead ends: 3649 [2023-11-26 11:49:07,598 INFO L226 Difference]: Without dead ends: 2290 [2023-11-26 11:49:07,600 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 11:49:07,601 INFO L413 NwaCegarLoop]: 369 mSDtfsCounter, 169 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:07,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 389 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 11:49:07,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2023-11-26 11:49:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2097. [2023-11-26 11:49:07,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 2096 states have (on average 1.2676526717557253) internal successors, (2657), 2096 states have internal predecessors, (2657), 0 states have call successors, (0), 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 11:49:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2657 transitions. [2023-11-26 11:49:07,652 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2657 transitions. Word has length 209 [2023-11-26 11:49:07,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:07,653 INFO L495 AbstractCegarLoop]: Abstraction has 2097 states and 2657 transitions. [2023-11-26 11:49:07,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:49:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2657 transitions. [2023-11-26 11:49:07,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-26 11:49:07,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:07,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:49:07,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:49:07,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:07,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:07,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1929403877, now seen corresponding path program 1 times [2023-11-26 11:49:07,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:07,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724823652] [2023-11-26 11:49:07,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:07,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:07,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 11:49:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:07,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724823652] [2023-11-26 11:49:07,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724823652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:07,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:07,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:07,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333946039] [2023-11-26 11:49:07,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:07,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:07,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:07,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:07,904 INFO L87 Difference]: Start difference. First operand 2097 states and 2657 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:49:09,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:09,005 INFO L93 Difference]: Finished difference Result 5850 states and 7487 transitions. [2023-11-26 11:49:09,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:09,006 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 215 [2023-11-26 11:49:09,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:09,028 INFO L225 Difference]: With dead ends: 5850 [2023-11-26 11:49:09,028 INFO L226 Difference]: Without dead ends: 3754 [2023-11-26 11:49:09,031 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 11:49:09,032 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 182 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:09,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 142 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 573 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:49:09,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2023-11-26 11:49:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3754. [2023-11-26 11:49:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3754 states, 3753 states have (on average 1.2454036770583534) internal successors, (4674), 3753 states have internal predecessors, (4674), 0 states have call successors, (0), 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 11:49:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3754 states to 3754 states and 4674 transitions. [2023-11-26 11:49:09,122 INFO L78 Accepts]: Start accepts. Automaton has 3754 states and 4674 transitions. Word has length 215 [2023-11-26 11:49:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:09,123 INFO L495 AbstractCegarLoop]: Abstraction has 3754 states and 4674 transitions. [2023-11-26 11:49:09,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:49:09,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3754 states and 4674 transitions. [2023-11-26 11:49:09,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-26 11:49:09,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:09,130 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:49:09,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:49:09,131 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:09,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:09,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1845371216, now seen corresponding path program 1 times [2023-11-26 11:49:09,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:09,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329836829] [2023-11-26 11:49:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:09,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:09,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:10,116 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 147 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:10,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:10,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329836829] [2023-11-26 11:49:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329836829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:10,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:10,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:49:10,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275213460] [2023-11-26 11:49:10,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:10,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:49:10,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:10,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:49:10,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:10,120 INFO L87 Difference]: Start difference. First operand 3754 states and 4674 transitions. Second operand has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:49:12,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:12,794 INFO L93 Difference]: Finished difference Result 13432 states and 17025 transitions. [2023-11-26 11:49:12,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:49:12,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 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 246 [2023-11-26 11:49:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:12,848 INFO L225 Difference]: With dead ends: 13432 [2023-11-26 11:49:12,848 INFO L226 Difference]: Without dead ends: 9679 [2023-11-26 11:49:12,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:49:12,855 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 413 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1874 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 1874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:12,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 102 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 1874 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-26 11:49:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9679 states. [2023-11-26 11:49:13,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9679 to 9474. [2023-11-26 11:49:13,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9474 states, 9473 states have (on average 1.2164045181040852) internal successors, (11523), 9473 states have internal predecessors, (11523), 0 states have call successors, (0), 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 11:49:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9474 states to 9474 states and 11523 transitions. [2023-11-26 11:49:13,095 INFO L78 Accepts]: Start accepts. Automaton has 9474 states and 11523 transitions. Word has length 246 [2023-11-26 11:49:13,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:13,096 INFO L495 AbstractCegarLoop]: Abstraction has 9474 states and 11523 transitions. [2023-11-26 11:49:13,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 49.2) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:49:13,097 INFO L276 IsEmpty]: Start isEmpty. Operand 9474 states and 11523 transitions. [2023-11-26 11:49:13,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2023-11-26 11:49:13,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:13,108 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 11:49:13,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:49:13,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:13,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:13,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1152875207, now seen corresponding path program 1 times [2023-11-26 11:49:13,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:13,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680938494] [2023-11-26 11:49:13,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:13,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2023-11-26 11:49:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:13,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680938494] [2023-11-26 11:49:13,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680938494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210348586] [2023-11-26 11:49:13,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:13,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:13,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:13,455 INFO L87 Difference]: Start difference. First operand 9474 states and 11523 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 11:49:14,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:14,497 INFO L93 Difference]: Finished difference Result 21154 states and 26095 transitions. [2023-11-26 11:49:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 292 [2023-11-26 11:49:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:14,568 INFO L225 Difference]: With dead ends: 21154 [2023-11-26 11:49:14,568 INFO L226 Difference]: Without dead ends: 12049 [2023-11-26 11:49:14,579 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 11:49:14,581 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 194 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:14,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 149 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:14,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12049 states. [2023-11-26 11:49:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12049 to 9467. [2023-11-26 11:49:14,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9467 states, 9466 states have (on average 1.2162476230720474) internal successors, (11513), 9466 states have internal predecessors, (11513), 0 states have call successors, (0), 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 11:49:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9467 states to 9467 states and 11513 transitions. [2023-11-26 11:49:14,838 INFO L78 Accepts]: Start accepts. Automaton has 9467 states and 11513 transitions. Word has length 292 [2023-11-26 11:49:14,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:14,839 INFO L495 AbstractCegarLoop]: Abstraction has 9467 states and 11513 transitions. [2023-11-26 11:49:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 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 11:49:14,840 INFO L276 IsEmpty]: Start isEmpty. Operand 9467 states and 11513 transitions. [2023-11-26 11:49:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2023-11-26 11:49:14,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:14,852 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:49:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:49:14,853 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:14,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 30299375, now seen corresponding path program 1 times [2023-11-26 11:49:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:14,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069584562] [2023-11-26 11:49:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:15,276 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 175 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:49:15,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:15,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069584562] [2023-11-26 11:49:15,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069584562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:15,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:15,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:15,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814587885] [2023-11-26 11:49:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:15,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:15,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:15,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:15,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:15,280 INFO L87 Difference]: Start difference. First operand 9467 states and 11513 transitions. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 11:49:16,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:16,306 INFO L93 Difference]: Finished difference Result 20053 states and 24753 transitions. [2023-11-26 11:49:16,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:16,307 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 297 [2023-11-26 11:49:16,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:16,329 INFO L225 Difference]: With dead ends: 20053 [2023-11-26 11:49:16,329 INFO L226 Difference]: Without dead ends: 10955 [2023-11-26 11:49:16,341 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 11:49:16,342 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 61 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:16,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 332 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:16,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10955 states. [2023-11-26 11:49:16,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10955 to 10755. [2023-11-26 11:49:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10755 states, 10754 states have (on average 1.2037381439464385) internal successors, (12945), 10754 states have internal predecessors, (12945), 0 states have call successors, (0), 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 11:49:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10755 states to 10755 states and 12945 transitions. [2023-11-26 11:49:16,608 INFO L78 Accepts]: Start accepts. Automaton has 10755 states and 12945 transitions. Word has length 297 [2023-11-26 11:49:16,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:16,609 INFO L495 AbstractCegarLoop]: Abstraction has 10755 states and 12945 transitions. [2023-11-26 11:49:16,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 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 11:49:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 10755 states and 12945 transitions. [2023-11-26 11:49:16,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2023-11-26 11:49:16,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:16,623 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-26 11:49:16,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:49:16,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:16,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:16,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1398761748, now seen corresponding path program 1 times [2023-11-26 11:49:16,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:16,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269592665] [2023-11-26 11:49:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:16,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:16,902 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 248 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 11:49:16,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:16,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269592665] [2023-11-26 11:49:16,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269592665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:16,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:16,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:16,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970749262] [2023-11-26 11:49:16,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:16,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:16,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:16,905 INFO L87 Difference]: Start difference. First operand 10755 states and 12945 transitions. Second operand has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 11:49:17,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:17,896 INFO L93 Difference]: Finished difference Result 20376 states and 24417 transitions. [2023-11-26 11:49:17,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:17,897 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 311 [2023-11-26 11:49:17,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:17,918 INFO L225 Difference]: With dead ends: 20376 [2023-11-26 11:49:17,919 INFO L226 Difference]: Without dead ends: 9990 [2023-11-26 11:49:17,931 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 11:49:17,932 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 136 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:17,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 146 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:49:17,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9990 states. [2023-11-26 11:49:18,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9990 to 7598. [2023-11-26 11:49:18,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7598 states, 7597 states have (on average 1.141766486771094) internal successors, (8674), 7597 states have internal predecessors, (8674), 0 states have call successors, (0), 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 11:49:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7598 states to 7598 states and 8674 transitions. [2023-11-26 11:49:18,144 INFO L78 Accepts]: Start accepts. Automaton has 7598 states and 8674 transitions. Word has length 311 [2023-11-26 11:49:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:18,145 INFO L495 AbstractCegarLoop]: Abstraction has 7598 states and 8674 transitions. [2023-11-26 11:49:18,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.33333333333333) internal successors, (244), 3 states have internal predecessors, (244), 0 states have call successors, (0), 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 11:49:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 7598 states and 8674 transitions. [2023-11-26 11:49:18,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-26 11:49:18,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:18,167 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 11:49:18,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:49:18,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:18,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:18,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1640857277, now seen corresponding path program 1 times [2023-11-26 11:49:18,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:18,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440093758] [2023-11-26 11:49:18,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:18,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 359 proven. 0 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2023-11-26 11:49:18,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:18,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440093758] [2023-11-26 11:49:18,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440093758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:18,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:18,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:49:18,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658058587] [2023-11-26 11:49:18,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:18,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:49:18,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:18,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:49:18,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:49:18,739 INFO L87 Difference]: Start difference. First operand 7598 states and 8674 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:49:19,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:19,874 INFO L93 Difference]: Finished difference Result 17771 states and 20277 transitions. [2023-11-26 11:49:19,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:49:19,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 396 [2023-11-26 11:49:19,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:19,892 INFO L225 Difference]: With dead ends: 17771 [2023-11-26 11:49:19,892 INFO L226 Difference]: Without dead ends: 9801 [2023-11-26 11:49:19,900 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 11:49:19,901 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 121 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:19,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 312 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-26 11:49:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2023-11-26 11:49:20,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 8697. [2023-11-26 11:49:20,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8697 states, 8696 states have (on average 1.1340846366145354) internal successors, (9862), 8696 states have internal predecessors, (9862), 0 states have call successors, (0), 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 11:49:20,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8697 states to 8697 states and 9862 transitions. [2023-11-26 11:49:20,054 INFO L78 Accepts]: Start accepts. Automaton has 8697 states and 9862 transitions. Word has length 396 [2023-11-26 11:49:20,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:20,054 INFO L495 AbstractCegarLoop]: Abstraction has 8697 states and 9862 transitions. [2023-11-26 11:49:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:49:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 8697 states and 9862 transitions. [2023-11-26 11:49:20,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2023-11-26 11:49:20,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:20,075 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-26 11:49:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:49:20,075 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:20,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash -91630478, now seen corresponding path program 1 times [2023-11-26 11:49:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:20,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146454350] [2023-11-26 11:49:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:20,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:20,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:21,877 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 355 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:49:21,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:21,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146454350] [2023-11-26 11:49:21,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146454350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:49:21,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:49:21,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:49:21,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193395233] [2023-11-26 11:49:21,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:49:21,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:49:21,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:21,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:49:21,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:49:21,881 INFO L87 Difference]: Start difference. First operand 8697 states and 9862 transitions. Second operand has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 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 11:49:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:49:24,253 INFO L93 Difference]: Finished difference Result 20030 states and 22683 transitions. [2023-11-26 11:49:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:49:24,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 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 397 [2023-11-26 11:49:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:49:24,280 INFO L225 Difference]: With dead ends: 20030 [2023-11-26 11:49:24,280 INFO L226 Difference]: Without dead ends: 11702 [2023-11-26 11:49:24,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:24,292 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 255 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 2208 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:49:24,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 185 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2208 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-26 11:49:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11702 states. [2023-11-26 11:49:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11702 to 11460. [2023-11-26 11:49:24,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 11459 states have (on average 1.130028798324461) internal successors, (12949), 11459 states have internal predecessors, (12949), 0 states have call successors, (0), 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 11:49:24,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 12949 transitions. [2023-11-26 11:49:24,501 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 12949 transitions. Word has length 397 [2023-11-26 11:49:24,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:49:24,502 INFO L495 AbstractCegarLoop]: Abstraction has 11460 states and 12949 transitions. [2023-11-26 11:49:24,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 53.142857142857146) internal successors, (372), 6 states have internal predecessors, (372), 0 states have call successors, (0), 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 11:49:24,503 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 12949 transitions. [2023-11-26 11:49:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2023-11-26 11:49:24,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:49:24,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2023-11-26 11:49:24,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:49:24,526 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:49:24,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:49:24,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1021700217, now seen corresponding path program 1 times [2023-11-26 11:49:24,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:49:24,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154134761] [2023-11-26 11:49:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:24,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:49:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:26,388 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 357 proven. 8 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:49:26,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:49:26,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154134761] [2023-11-26 11:49:26,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154134761] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:49:26,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175724116] [2023-11-26 11:49:26,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:49:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:49:26,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:49:26,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:49:26,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73ef08dc-7c90-4c03-be80-6c121c0ef335/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:49:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:49:26,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:49:26,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:49:28,111 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 244 proven. 121 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:49:28,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:49:32,551 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 244 proven. 121 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-26 11:49:32,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175724116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:49:32,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:49:32,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3, 3] total 10 [2023-11-26 11:49:32,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930472924] [2023-11-26 11:49:32,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:49:32,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 11:49:32,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:49:32,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 11:49:32,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:49:32,559 INFO L87 Difference]: Start difference. First operand 11460 states and 12949 transitions. Second operand has 11 states, 11 states have (on average 86.18181818181819) internal successors, (948), 10 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)