./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu --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 64bit --witnessprinter.graph.data.programhash 013fc4a889617293119ec23d82d2fd495e032e9bab1929da87247ff74d1355ed --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:05:10,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:05:10,857 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 08:05:10,861 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:05:10,862 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:05:10,895 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:05:10,896 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:05:10,897 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:05:10,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:05:10,904 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:05:10,905 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:05:10,906 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:05:10,906 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:05:10,908 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:05:10,908 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:05:10,909 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:05:10,909 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:05:10,910 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:05:10,910 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:05:10,911 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:05:10,911 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:05:10,912 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:05:10,912 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:05:10,913 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:05:10,913 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:05:10,914 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:10,914 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:05:10,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:05:10,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:05:10,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:05:10,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:05:10,917 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:05:10,917 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:05:10,917 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:05:10,918 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:05:10,918 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:05:10,918 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_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 013fc4a889617293119ec23d82d2fd495e032e9bab1929da87247ff74d1355ed [2023-11-19 08:05:11,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:05:11,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:05:11,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:05:11,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:05:11,239 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:05:11,241 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c [2023-11-19 08:05:14,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:05:14,634 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:05:14,634 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c [2023-11-19 08:05:14,649 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/data/153c000d7/aeadfdeb3b5c49d1b3ac2968260dcd2d/FLAG0e8771276 [2023-11-19 08:05:14,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/data/153c000d7/aeadfdeb3b5c49d1b3ac2968260dcd2d [2023-11-19 08:05:14,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:05:14,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:05:14,686 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:14,687 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:05:14,693 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:05:14,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:14" (1/1) ... [2023-11-19 08:05:14,695 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65bbd4e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:14, skipping insertion in model container [2023-11-19 08:05:14,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:05:14" (1/1) ... [2023-11-19 08:05:14,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:05:14,998 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_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c[1270,1283] [2023-11-19 08:05:15,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:15,222 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:05:15,236 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_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_non-pipelined-microprocessor.c[1270,1283] [2023-11-19 08:05:15,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:05:15,414 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:05:15,415 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15 WrapperNode [2023-11-19 08:05:15,415 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:05:15,417 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:15,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:05:15,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:05:15,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,463 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,628 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1218 [2023-11-19 08:05:15,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:05:15,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:05:15,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:05:15,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:05:15,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,717 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,821 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,869 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:05:15,870 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:05:15,870 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:05:15,871 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:05:15,872 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (1/1) ... [2023-11-19 08:05:15,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:05:15,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:05:15,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:05:16,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf2aaa3e-90a0-4d79-bcb2-dd63a6a58fc5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:05:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:05:16,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:05:16,059 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:05:16,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:05:16,315 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:05:16,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:05:17,550 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:05:17,562 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:05:17,563 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 08:05:17,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:17 BoogieIcfgContainer [2023-11-19 08:05:17,569 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:05:17,572 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:05:17,573 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:05:17,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:05:17,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:05:14" (1/3) ... [2023-11-19 08:05:17,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0894c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:17, skipping insertion in model container [2023-11-19 08:05:17,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:05:15" (2/3) ... [2023-11-19 08:05:17,578 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a0894c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:05:17, skipping insertion in model container [2023-11-19 08:05:17,578 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:05:17" (3/3) ... [2023-11-19 08:05:17,580 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_non-pipelined-microprocessor.c [2023-11-19 08:05:17,602 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:05:17,602 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 08:05:17,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:05:17,674 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;@3db3c825, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:05:17,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 08:05:17,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 195 states, 193 states have (on average 1.6580310880829014) internal successors, (320), 194 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-19 08:05:17,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:17,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:17,693 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:17,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:17,699 INFO L85 PathProgramCache]: Analyzing trace with hash -713143651, now seen corresponding path program 1 times [2023-11-19 08:05:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312100155] [2023-11-19 08:05:17,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:19,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:19,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:19,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312100155] [2023-11-19 08:05:19,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312100155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:19,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:19,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:19,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167974709] [2023-11-19 08:05:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:19,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:19,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:19,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:19,431 INFO L87 Difference]: Start difference. First operand has 195 states, 193 states have (on average 1.6580310880829014) internal successors, (320), 194 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:19,543 INFO L93 Difference]: Finished difference Result 362 states and 598 transitions. [2023-11-19 08:05:19,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:19,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-19 08:05:19,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:19,561 INFO L225 Difference]: With dead ends: 362 [2023-11-19 08:05:19,562 INFO L226 Difference]: Without dead ends: 193 [2023-11-19 08:05:19,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:19,569 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:19,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 930 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-19 08:05:19,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2023-11-19 08:05:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.6458333333333333) internal successors, (316), 192 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 316 transitions. [2023-11-19 08:05:19,623 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 316 transitions. Word has length 77 [2023-11-19 08:05:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:19,624 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 316 transitions. [2023-11-19 08:05:19,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 316 transitions. [2023-11-19 08:05:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 08:05:19,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:19,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:05:19,635 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:19,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:19,638 INFO L85 PathProgramCache]: Analyzing trace with hash -630891321, now seen corresponding path program 1 times [2023-11-19 08:05:19,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:19,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868183874] [2023-11-19 08:05:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:19,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:20,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:20,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:20,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868183874] [2023-11-19 08:05:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868183874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:20,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:20,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:05:20,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488941268] [2023-11-19 08:05:20,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:20,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 08:05:20,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 08:05:20,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:20,301 INFO L87 Difference]: Start difference. First operand 193 states and 316 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:20,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:20,356 INFO L93 Difference]: Finished difference Result 363 states and 594 transitions. [2023-11-19 08:05:20,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 08:05:20,357 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-19 08:05:20,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:20,363 INFO L225 Difference]: With dead ends: 363 [2023-11-19 08:05:20,364 INFO L226 Difference]: Without dead ends: 196 [2023-11-19 08:05:20,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 08:05:20,375 INFO L413 NwaCegarLoop]: 312 mSDtfsCounter, 1 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:20,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 927 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-19 08:05:20,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2023-11-19 08:05:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.6391752577319587) internal successors, (318), 194 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:20,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 318 transitions. [2023-11-19 08:05:20,406 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 318 transitions. Word has length 78 [2023-11-19 08:05:20,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:20,408 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 318 transitions. [2023-11-19 08:05:20,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 318 transitions. [2023-11-19 08:05:20,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 08:05:20,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:20,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:20,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:05:20,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:20,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:20,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1706773495, now seen corresponding path program 1 times [2023-11-19 08:05:20,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:20,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733895544] [2023-11-19 08:05:20,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:20,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:20,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:21,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:21,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733895544] [2023-11-19 08:05:21,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733895544] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:21,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:21,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:21,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503285325] [2023-11-19 08:05:21,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:21,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:21,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:21,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:21,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:21,689 INFO L87 Difference]: Start difference. First operand 195 states and 318 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:21,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:21,774 INFO L93 Difference]: Finished difference Result 533 states and 870 transitions. [2023-11-19 08:05:21,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:05:21,774 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 08:05:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:21,778 INFO L225 Difference]: With dead ends: 533 [2023-11-19 08:05:21,779 INFO L226 Difference]: Without dead ends: 364 [2023-11-19 08:05:21,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:21,787 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 652 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:21,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1183 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:21,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-19 08:05:21,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 198. [2023-11-19 08:05:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 1.6294416243654823) internal successors, (321), 197 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 321 transitions. [2023-11-19 08:05:21,804 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 321 transitions. Word has length 79 [2023-11-19 08:05:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:21,805 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 321 transitions. [2023-11-19 08:05:21,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:21,806 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 321 transitions. [2023-11-19 08:05:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 08:05:21,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:21,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:21,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:05:21,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:21,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:21,809 INFO L85 PathProgramCache]: Analyzing trace with hash -813186439, now seen corresponding path program 1 times [2023-11-19 08:05:21,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:21,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730221485] [2023-11-19 08:05:21,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:21,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:30,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:30,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730221485] [2023-11-19 08:05:30,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730221485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:30,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:30,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-19 08:05:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894066916] [2023-11-19 08:05:30,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:30,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 08:05:30,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:30,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 08:05:30,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-19 08:05:30,765 INFO L87 Difference]: Start difference. First operand 198 states and 321 transitions. Second operand has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:39,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:39,497 INFO L93 Difference]: Finished difference Result 1692 states and 2725 transitions. [2023-11-19 08:05:39,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-11-19 08:05:39,498 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 08:05:39,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:39,507 INFO L225 Difference]: With dead ends: 1692 [2023-11-19 08:05:39,507 INFO L226 Difference]: Without dead ends: 1520 [2023-11-19 08:05:39,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1424 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1096, Invalid=4016, Unknown=0, NotChecked=0, Total=5112 [2023-11-19 08:05:39,511 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 8718 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8718 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 3302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:39,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8718 Valid, 2071 Invalid, 3302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-19 08:05:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2023-11-19 08:05:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 241. [2023-11-19 08:05:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.625) internal successors, (390), 240 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:39,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 390 transitions. [2023-11-19 08:05:39,539 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 390 transitions. Word has length 79 [2023-11-19 08:05:39,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:39,539 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 390 transitions. [2023-11-19 08:05:39,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.647058823529412) internal successors, (79), 17 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:39,540 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 390 transitions. [2023-11-19 08:05:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:39,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:39,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:39,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:05:39,542 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:39,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:39,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1310239837, now seen corresponding path program 1 times [2023-11-19 08:05:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:39,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021894328] [2023-11-19 08:05:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:40,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:40,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021894328] [2023-11-19 08:05:40,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021894328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:40,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:40,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:40,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614567431] [2023-11-19 08:05:40,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:40,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:40,373 INFO L87 Difference]: Start difference. First operand 241 states and 390 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:41,508 INFO L93 Difference]: Finished difference Result 669 states and 1082 transitions. [2023-11-19 08:05:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:41,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:41,512 INFO L225 Difference]: With dead ends: 669 [2023-11-19 08:05:41,512 INFO L226 Difference]: Without dead ends: 454 [2023-11-19 08:05:41,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:41,514 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 274 mSDsluCounter, 1118 mSDsCounter, 0 mSdLazyCounter, 1067 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:41,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1542 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1067 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 08:05:41,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2023-11-19 08:05:41,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 243. [2023-11-19 08:05:41,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.6198347107438016) internal successors, (392), 242 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 392 transitions. [2023-11-19 08:05:41,530 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 392 transitions. Word has length 80 [2023-11-19 08:05:41,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:41,533 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 392 transitions. [2023-11-19 08:05:41,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:41,533 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 392 transitions. [2023-11-19 08:05:41,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:41,535 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:41,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:05:41,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:41,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1244722827, now seen corresponding path program 1 times [2023-11-19 08:05:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658150949] [2023-11-19 08:05:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:42,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:42,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:42,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658150949] [2023-11-19 08:05:42,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658150949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:42,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:42,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:05:42,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372600530] [2023-11-19 08:05:42,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:42,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:42,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:42,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:42,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:42,552 INFO L87 Difference]: Start difference. First operand 243 states and 392 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:43,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:43,619 INFO L93 Difference]: Finished difference Result 650 states and 1046 transitions. [2023-11-19 08:05:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:43,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:43,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:43,623 INFO L225 Difference]: With dead ends: 650 [2023-11-19 08:05:43,623 INFO L226 Difference]: Without dead ends: 433 [2023-11-19 08:05:43,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:05:43,626 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 554 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:43,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 983 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:05:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-11-19 08:05:43,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 245. [2023-11-19 08:05:43,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.6147540983606556) internal successors, (394), 244 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 394 transitions. [2023-11-19 08:05:43,643 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 394 transitions. Word has length 80 [2023-11-19 08:05:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:43,644 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 394 transitions. [2023-11-19 08:05:43,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:43,645 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 394 transitions. [2023-11-19 08:05:43,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:43,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:43,649 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 08:05:43,657 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:43,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:43,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1000856627, now seen corresponding path program 1 times [2023-11-19 08:05:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569756079] [2023-11-19 08:05:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:43,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:44,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:44,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569756079] [2023-11-19 08:05:44,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569756079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:44,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:44,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:44,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900755349] [2023-11-19 08:05:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:44,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:44,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:44,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:44,484 INFO L87 Difference]: Start difference. First operand 245 states and 394 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:45,619 INFO L93 Difference]: Finished difference Result 654 states and 1050 transitions. [2023-11-19 08:05:45,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:45,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:45,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:45,622 INFO L225 Difference]: With dead ends: 654 [2023-11-19 08:05:45,622 INFO L226 Difference]: Without dead ends: 435 [2023-11-19 08:05:45,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-19 08:05:45,624 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 274 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:45,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 1545 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 08:05:45,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-19 08:05:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 245. [2023-11-19 08:05:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.6147540983606556) internal successors, (394), 244 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 394 transitions. [2023-11-19 08:05:45,636 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 394 transitions. Word has length 80 [2023-11-19 08:05:45,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:45,636 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 394 transitions. [2023-11-19 08:05:45,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 394 transitions. [2023-11-19 08:05:45,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:45,638 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:45,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:45,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:05:45,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:45,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:45,639 INFO L85 PathProgramCache]: Analyzing trace with hash 254348045, now seen corresponding path program 1 times [2023-11-19 08:05:45,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:45,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766768773] [2023-11-19 08:05:45,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:45,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:46,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:46,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766768773] [2023-11-19 08:05:46,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766768773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:46,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:46,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:46,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093420467] [2023-11-19 08:05:46,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:46,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:46,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:46,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:46,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:46,020 INFO L87 Difference]: Start difference. First operand 245 states and 394 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:46,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:46,099 INFO L93 Difference]: Finished difference Result 682 states and 1096 transitions. [2023-11-19 08:05:46,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:46,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:46,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:46,103 INFO L225 Difference]: With dead ends: 682 [2023-11-19 08:05:46,103 INFO L226 Difference]: Without dead ends: 463 [2023-11-19 08:05:46,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:46,105 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 827 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:46,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [827 Valid, 904 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:46,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-19 08:05:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 265. [2023-11-19 08:05:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 1.606060606060606) internal successors, (424), 264 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 424 transitions. [2023-11-19 08:05:46,123 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 424 transitions. Word has length 80 [2023-11-19 08:05:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:46,123 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 424 transitions. [2023-11-19 08:05:46,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 424 transitions. [2023-11-19 08:05:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:46,125 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:46,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:46,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:05:46,126 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:46,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:46,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1375944627, now seen corresponding path program 1 times [2023-11-19 08:05:46,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:46,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082345999] [2023-11-19 08:05:46,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:46,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:46,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082345999] [2023-11-19 08:05:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082345999] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:46,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693169571] [2023-11-19 08:05:46,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:46,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:46,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:46,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:46,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:46,532 INFO L87 Difference]: Start difference. First operand 265 states and 424 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:46,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:46,615 INFO L93 Difference]: Finished difference Result 684 states and 1096 transitions. [2023-11-19 08:05:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:46,619 INFO L225 Difference]: With dead ends: 684 [2023-11-19 08:05:46,619 INFO L226 Difference]: Without dead ends: 462 [2023-11-19 08:05:46,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:46,623 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 823 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:46,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 904 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-19 08:05:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 264. [2023-11-19 08:05:46,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.596958174904943) internal successors, (420), 263 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) [2023-11-19 08:05:46,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 420 transitions. [2023-11-19 08:05:46,642 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 420 transitions. Word has length 80 [2023-11-19 08:05:46,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:46,642 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 420 transitions. [2023-11-19 08:05:46,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:46,643 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 420 transitions. [2023-11-19 08:05:46,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:46,645 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:46,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:46,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 08:05:46,646 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:46,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1193468633, now seen corresponding path program 1 times [2023-11-19 08:05:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45138657] [2023-11-19 08:05:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:47,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45138657] [2023-11-19 08:05:47,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45138657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:47,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:47,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:47,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141442909] [2023-11-19 08:05:47,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:47,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:47,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:47,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:47,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:47,039 INFO L87 Difference]: Start difference. First operand 264 states and 420 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:47,120 INFO L93 Difference]: Finished difference Result 685 states and 1094 transitions. [2023-11-19 08:05:47,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:47,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:47,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:47,124 INFO L225 Difference]: With dead ends: 685 [2023-11-19 08:05:47,124 INFO L226 Difference]: Without dead ends: 461 [2023-11-19 08:05:47,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:47,127 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 819 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:47,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 904 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:47,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-19 08:05:47,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 263. [2023-11-19 08:05:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.5877862595419847) internal successors, (416), 262 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 416 transitions. [2023-11-19 08:05:47,143 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 416 transitions. Word has length 80 [2023-11-19 08:05:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:47,144 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 416 transitions. [2023-11-19 08:05:47,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,144 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 416 transitions. [2023-11-19 08:05:47,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 08:05:47,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:47,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:47,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:05:47,150 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:47,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:47,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1933540675, now seen corresponding path program 1 times [2023-11-19 08:05:47,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:47,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222778771] [2023-11-19 08:05:47,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:47,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:47,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:47,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222778771] [2023-11-19 08:05:47,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222778771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:47,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:47,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 08:05:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214280161] [2023-11-19 08:05:47,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:05:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:05:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:05:47,538 INFO L87 Difference]: Start difference. First operand 263 states and 416 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:47,621 INFO L93 Difference]: Finished difference Result 667 states and 1065 transitions. [2023-11-19 08:05:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:05:47,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-19 08:05:47,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:47,625 INFO L225 Difference]: With dead ends: 667 [2023-11-19 08:05:47,625 INFO L226 Difference]: Without dead ends: 441 [2023-11-19 08:05:47,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:47,627 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 815 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:47,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 904 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:05:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-19 08:05:47,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 256. [2023-11-19 08:05:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 255 states have (on average 1.5960784313725491) internal successors, (407), 255 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 407 transitions. [2023-11-19 08:05:47,642 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 407 transitions. Word has length 80 [2023-11-19 08:05:47,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:47,643 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 407 transitions. [2023-11-19 08:05:47,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 407 transitions. [2023-11-19 08:05:47,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 08:05:47,644 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:47,645 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:47,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 08:05:47,645 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:47,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:47,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1280389355, now seen corresponding path program 1 times [2023-11-19 08:05:47,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:47,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800240647] [2023-11-19 08:05:47,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:47,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:48,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:48,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:48,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800240647] [2023-11-19 08:05:48,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800240647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:48,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:48,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:05:48,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633238919] [2023-11-19 08:05:48,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:48,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:05:48,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:48,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:05:48,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:05:48,332 INFO L87 Difference]: Start difference. First operand 256 states and 407 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:49,458 INFO L93 Difference]: Finished difference Result 688 states and 1102 transitions. [2023-11-19 08:05:49,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:05:49,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 08:05:49,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:49,462 INFO L225 Difference]: With dead ends: 688 [2023-11-19 08:05:49,463 INFO L226 Difference]: Without dead ends: 469 [2023-11-19 08:05:49,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:49,464 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 270 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:49,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1534 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:05:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-11-19 08:05:49,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 259. [2023-11-19 08:05:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.5930232558139534) internal successors, (411), 258 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 411 transitions. [2023-11-19 08:05:49,480 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 411 transitions. Word has length 81 [2023-11-19 08:05:49,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:49,480 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 411 transitions. [2023-11-19 08:05:49,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:49,481 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 411 transitions. [2023-11-19 08:05:49,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 08:05:49,482 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:49,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:49,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 08:05:49,483 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:49,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash 485253137, now seen corresponding path program 1 times [2023-11-19 08:05:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694825765] [2023-11-19 08:05:49,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:05:50,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:05:50,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:05:50,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694825765] [2023-11-19 08:05:50,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694825765] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:05:50,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:05:50,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 08:05:50,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320745774] [2023-11-19 08:05:50,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:05:50,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:05:50,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:05:50,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:05:50,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:05:50,196 INFO L87 Difference]: Start difference. First operand 259 states and 411 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:05:51,284 INFO L93 Difference]: Finished difference Result 674 states and 1074 transitions. [2023-11-19 08:05:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 08:05:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2023-11-19 08:05:51,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:05:51,287 INFO L225 Difference]: With dead ends: 674 [2023-11-19 08:05:51,287 INFO L226 Difference]: Without dead ends: 452 [2023-11-19 08:05:51,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-19 08:05:51,289 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 550 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:05:51,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 982 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1066 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 08:05:51,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-19 08:05:51,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 264. [2023-11-19 08:05:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.585551330798479) internal successors, (417), 263 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 417 transitions. [2023-11-19 08:05:51,304 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 417 transitions. Word has length 81 [2023-11-19 08:05:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:05:51,304 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 417 transitions. [2023-11-19 08:05:51,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:05:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 417 transitions. [2023-11-19 08:05:51,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 08:05:51,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:05:51,309 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:05:51,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 08:05:51,310 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 08:05:51,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:05:51,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1378739475, now seen corresponding path program 1 times [2023-11-19 08:05:51,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:05:51,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314629879] [2023-11-19 08:05:51,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:05:51,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:05:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat