./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/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_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/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 32bit --witnessprinter.graph.data.programhash acd9e872db1fd43c4a46d62b416714fdbb0fdc4944c5c8838fbbff5e8b72009f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:42,370 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:42,440 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:42,447 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:42,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:42,474 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:42,475 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:42,476 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:42,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:42,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:42,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:42,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:42,480 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:42,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:42,481 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:42,482 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:42,482 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:42,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:42,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:42,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:42,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:42,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:42,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:42,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:42,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:42,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:42,488 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:42,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:42,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:42,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:42,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:42,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:42,491 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:42,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:42,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:42,493 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:42,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:42,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:42,494 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:42,494 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_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> acd9e872db1fd43c4a46d62b416714fdbb0fdc4944c5c8838fbbff5e8b72009f [2023-11-19 07:40:42,734 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:42,756 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:42,759 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:42,760 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:42,761 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:42,762 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-11-19 07:40:45,941 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:46,271 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:46,271 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-11-19 07:40:46,287 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/data/62ab08ff9/96c54efd996345f7882f08a8108a1593/FLAGe5ec85bec [2023-11-19 07:40:46,304 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/data/62ab08ff9/96c54efd996345f7882f08a8108a1593 [2023-11-19 07:40:46,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:46,314 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:46,317 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:46,317 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:46,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:46,325 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c2726d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46, skipping insertion in model container [2023-11-19 07:40:46,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,388 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:46,678 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_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-11-19 07:40:46,682 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:46,703 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:46,753 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_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/sv-benchmarks/c/seq-mthreaded/pals_lcr.5.ufo.UNBOUNDED.pals.c[11261,11274] [2023-11-19 07:40:46,763 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:46,782 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:46,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46 WrapperNode [2023-11-19 07:40:46,783 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:46,784 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:46,784 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:46,784 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:46,792 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,873 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 331 [2023-11-19 07:40:46,873 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:46,874 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:46,874 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:46,874 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:46,884 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,884 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,888 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,888 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,897 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,902 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,905 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,907 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:46,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:46,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:46,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:46,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (1/1) ... [2023-11-19 07:40:46,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:46,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:46,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:46,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:47,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:47,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:47,143 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:47,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:47,667 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:47,676 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:47,676 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:40:47,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:47 BoogieIcfgContainer [2023-11-19 07:40:47,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:47,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:47,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:47,693 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:47,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:46" (1/3) ... [2023-11-19 07:40:47,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:47, skipping insertion in model container [2023-11-19 07:40:47,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:46" (2/3) ... [2023-11-19 07:40:47,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:47, skipping insertion in model container [2023-11-19 07:40:47,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:47" (3/3) ... [2023-11-19 07:40:47,702 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.UNBOUNDED.pals.c [2023-11-19 07:40:47,721 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:47,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:47,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:47,797 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;@59649fbb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:47,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:40:47,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.7469879518072289) internal successors, (145), 84 states have internal predecessors, (145), 0 states have call successors, (0), 0 states 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 07:40:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:40:47,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:47,811 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] [2023-11-19 07:40:47,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:47,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1916465496, now seen corresponding path program 1 times [2023-11-19 07:40:47,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:47,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644752883] [2023-11-19 07:40:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:47,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,046 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 07:40:48,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644752883] [2023-11-19 07:40:48,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644752883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341180978] [2023-11-19 07:40:48,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:40:48,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:40:48,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:48,084 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.7469879518072289) internal successors, (145), 84 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 07:40:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:48,107 INFO L93 Difference]: Finished difference Result 130 states and 219 transitions. [2023-11-19 07:40:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:40:48,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-19 07:40:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:48,119 INFO L225 Difference]: With dead ends: 130 [2023-11-19 07:40:48,119 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 07:40:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:40:48,126 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:48,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 07:40:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-19 07:40:48,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.725) internal successors, (138), 80 states have internal predecessors, (138), 0 states have call successors, (0), 0 states 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 07:40:48,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 138 transitions. [2023-11-19 07:40:48,165 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 138 transitions. Word has length 23 [2023-11-19 07:40:48,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:48,165 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 138 transitions. [2023-11-19 07:40:48,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 11.5) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 07:40:48,166 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 138 transitions. [2023-11-19 07:40:48,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:40:48,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:48,167 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] [2023-11-19 07:40:48,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:48,168 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:48,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash -77679210, now seen corresponding path program 1 times [2023-11-19 07:40:48,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954711904] [2023-11-19 07:40:48,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,466 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 07:40:48,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954711904] [2023-11-19 07:40:48,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954711904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:40:48,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505364736] [2023-11-19 07:40:48,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:40:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:40:48,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:48,474 INFO L87 Difference]: Start difference. First operand 81 states and 138 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 07:40:48,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:48,570 INFO L93 Difference]: Finished difference Result 129 states and 212 transitions. [2023-11-19 07:40:48,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:40:48,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 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 23 [2023-11-19 07:40:48,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:48,572 INFO L225 Difference]: With dead ends: 129 [2023-11-19 07:40:48,572 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 07:40:48,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:48,575 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 2 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:48,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 508 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 07:40:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-19 07:40:48,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.3375) internal successors, (107), 80 states have internal predecessors, (107), 0 states have call successors, (0), 0 states 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 07:40:48,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 107 transitions. [2023-11-19 07:40:48,584 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 107 transitions. Word has length 23 [2023-11-19 07:40:48,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:48,584 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 107 transitions. [2023-11-19 07:40:48,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states 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 07:40:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 107 transitions. [2023-11-19 07:40:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:40:48,586 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:48,587 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] [2023-11-19 07:40:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:48,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:48,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:48,588 INFO L85 PathProgramCache]: Analyzing trace with hash -712243443, now seen corresponding path program 1 times [2023-11-19 07:40:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:48,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37692512] [2023-11-19 07:40:48,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:48,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:48,960 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 07:40:48,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:48,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37692512] [2023-11-19 07:40:48,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37692512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:48,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:48,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:48,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736897893] [2023-11-19 07:40:48,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:48,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:48,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:48,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:48,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:48,966 INFO L87 Difference]: Start difference. First operand 81 states and 107 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 07:40:49,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:49,299 INFO L93 Difference]: Finished difference Result 521 states and 807 transitions. [2023-11-19 07:40:49,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:40:49,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-19 07:40:49,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:49,306 INFO L225 Difference]: With dead ends: 521 [2023-11-19 07:40:49,307 INFO L226 Difference]: Without dead ends: 477 [2023-11-19 07:40:49,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:40:49,309 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 841 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:49,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1099 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-19 07:40:49,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 123. [2023-11-19 07:40:49,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4262295081967213) internal successors, (174), 122 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 07:40:49,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 174 transitions. [2023-11-19 07:40:49,336 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 174 transitions. Word has length 53 [2023-11-19 07:40:49,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:49,337 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 174 transitions. [2023-11-19 07:40:49,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 07:40:49,338 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 174 transitions. [2023-11-19 07:40:49,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:40:49,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:49,341 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] [2023-11-19 07:40:49,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:49,341 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:49,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:49,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1379615493, now seen corresponding path program 1 times [2023-11-19 07:40:49,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:49,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078501879] [2023-11-19 07:40:49,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:49,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:49,781 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 07:40:49,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:49,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078501879] [2023-11-19 07:40:49,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078501879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:49,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:49,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54613724] [2023-11-19 07:40:49,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:49,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:49,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:49,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:49,785 INFO L87 Difference]: Start difference. First operand 123 states and 174 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:40:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,020 INFO L93 Difference]: Finished difference Result 211 states and 312 transitions. [2023-11-19 07:40:50,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:50,022 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-19 07:40:50,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,024 INFO L225 Difference]: With dead ends: 211 [2023-11-19 07:40:50,024 INFO L226 Difference]: Without dead ends: 125 [2023-11-19 07:40:50,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:40:50,038 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 171 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 365 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-11-19 07:40:50,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 123. [2023-11-19 07:40:50,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4180327868852458) internal successors, (173), 122 states have internal predecessors, (173), 0 states have call successors, (0), 0 states 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 07:40:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 173 transitions. [2023-11-19 07:40:50,060 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 173 transitions. Word has length 55 [2023-11-19 07:40:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,061 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 173 transitions. [2023-11-19 07:40:50,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:40:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 173 transitions. [2023-11-19 07:40:50,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 07:40:50,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,064 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] [2023-11-19 07:40:50,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:50,064 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:50,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1313121981, now seen corresponding path program 1 times [2023-11-19 07:40:50,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511176139] [2023-11-19 07:40:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,241 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 07:40:50,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511176139] [2023-11-19 07:40:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511176139] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:50,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:50,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:50,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985667047] [2023-11-19 07:40:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:50,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:50,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:50,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:50,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,245 INFO L87 Difference]: Start difference. First operand 123 states and 173 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:40:50,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,275 INFO L93 Difference]: Finished difference Result 284 states and 426 transitions. [2023-11-19 07:40:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:50,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2023-11-19 07:40:50,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,278 INFO L225 Difference]: With dead ends: 284 [2023-11-19 07:40:50,278 INFO L226 Difference]: Without dead ends: 198 [2023-11-19 07:40:50,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,280 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 45 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 166 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:50,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-11-19 07:40:50,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 194. [2023-11-19 07:40:50,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.461139896373057) internal successors, (282), 193 states have internal predecessors, (282), 0 states have call successors, (0), 0 states 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 07:40:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 282 transitions. [2023-11-19 07:40:50,295 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 282 transitions. Word has length 55 [2023-11-19 07:40:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,296 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 282 transitions. [2023-11-19 07:40:50,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 07:40:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 282 transitions. [2023-11-19 07:40:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 07:40:50,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:50,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:50,300 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:50,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,301 INFO L85 PathProgramCache]: Analyzing trace with hash -596315752, now seen corresponding path program 1 times [2023-11-19 07:40:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716966252] [2023-11-19 07:40:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,658 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 07:40:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:50,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716966252] [2023-11-19 07:40:50,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716966252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:50,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:50,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:40:50,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799685604] [2023-11-19 07:40:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:50,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:40:50,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:50,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:40:50,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:40:50,663 INFO L87 Difference]: Start difference. First operand 194 states and 282 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:50,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,778 INFO L93 Difference]: Finished difference Result 318 states and 478 transitions. [2023-11-19 07:40:50,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 07:40:50,779 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2023-11-19 07:40:50,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,783 INFO L225 Difference]: With dead ends: 318 [2023-11-19 07:40:50,783 INFO L226 Difference]: Without dead ends: 316 [2023-11-19 07:40:50,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:40:50,785 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 138 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 891 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:50,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-19 07:40:50,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 200. [2023-11-19 07:40:50,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.4422110552763818) internal successors, (287), 199 states have internal predecessors, (287), 0 states have call successors, (0), 0 states 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 07:40:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 287 transitions. [2023-11-19 07:40:50,808 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 287 transitions. Word has length 56 [2023-11-19 07:40:50,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,809 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 287 transitions. [2023-11-19 07:40:50,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:50,810 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 287 transitions. [2023-11-19 07:40:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:40:50,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:50,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:50,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:50,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,824 INFO L85 PathProgramCache]: Analyzing trace with hash -668616123, now seen corresponding path program 1 times [2023-11-19 07:40:50,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509251955] [2023-11-19 07:40:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:50,910 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 07:40:50,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:50,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509251955] [2023-11-19 07:40:50,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509251955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:50,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:50,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:50,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084253528] [2023-11-19 07:40:50,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:50,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:50,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:50,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,913 INFO L87 Difference]: Start difference. First operand 200 states and 287 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:50,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:50,937 INFO L93 Difference]: Finished difference Result 510 states and 759 transitions. [2023-11-19 07:40:50,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:50,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:40:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:50,944 INFO L225 Difference]: With dead ends: 510 [2023-11-19 07:40:50,944 INFO L226 Difference]: Without dead ends: 347 [2023-11-19 07:40:50,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:50,949 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 58 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:50,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 229 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:50,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-19 07:40:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 345. [2023-11-19 07:40:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.4651162790697674) internal successors, (504), 344 states have internal predecessors, (504), 0 states have call successors, (0), 0 states 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 07:40:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 504 transitions. [2023-11-19 07:40:50,969 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 504 transitions. Word has length 57 [2023-11-19 07:40:50,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:50,970 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 504 transitions. [2023-11-19 07:40:50,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:50,970 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 504 transitions. [2023-11-19 07:40:50,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:40:50,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:50,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:50,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:50,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:50,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1645822907, now seen corresponding path program 1 times [2023-11-19 07:40:50,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:50,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644549178] [2023-11-19 07:40:50,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:50,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,052 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 07:40:51,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644549178] [2023-11-19 07:40:51,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644549178] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:51,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3699481] [2023-11-19 07:40:51,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,055 INFO L87 Difference]: Start difference. First operand 345 states and 504 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:51,092 INFO L93 Difference]: Finished difference Result 929 states and 1382 transitions. [2023-11-19 07:40:51,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:40:51,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:51,097 INFO L225 Difference]: With dead ends: 929 [2023-11-19 07:40:51,097 INFO L226 Difference]: Without dead ends: 621 [2023-11-19 07:40:51,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,100 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 54 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:51,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 225 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-11-19 07:40:51,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 619. [2023-11-19 07:40:51,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 1.4660194174757282) internal successors, (906), 618 states have internal predecessors, (906), 0 states have call successors, (0), 0 states 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 07:40:51,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 906 transitions. [2023-11-19 07:40:51,139 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 906 transitions. Word has length 57 [2023-11-19 07:40:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:51,140 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 906 transitions. [2023-11-19 07:40:51,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 906 transitions. [2023-11-19 07:40:51,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:40:51,142 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:51,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:51,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:51,143 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:51,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 135109957, now seen corresponding path program 1 times [2023-11-19 07:40:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011828835] [2023-11-19 07:40:51,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,223 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 07:40:51,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011828835] [2023-11-19 07:40:51,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011828835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:51,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618216611] [2023-11-19 07:40:51,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,227 INFO L87 Difference]: Start difference. First operand 619 states and 906 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:51,300 INFO L93 Difference]: Finished difference Result 1719 states and 2532 transitions. [2023-11-19 07:40:51,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:40:51,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:51,309 INFO L225 Difference]: With dead ends: 1719 [2023-11-19 07:40:51,313 INFO L226 Difference]: Without dead ends: 1137 [2023-11-19 07:40:51,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,317 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 52 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:51,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 227 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2023-11-19 07:40:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1135. [2023-11-19 07:40:51,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 1134 states have (on average 1.4514991181657848) internal successors, (1646), 1134 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states 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 07:40:51,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1646 transitions. [2023-11-19 07:40:51,365 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1646 transitions. Word has length 57 [2023-11-19 07:40:51,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:51,367 INFO L495 AbstractCegarLoop]: Abstraction has 1135 states and 1646 transitions. [2023-11-19 07:40:51,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1646 transitions. [2023-11-19 07:40:51,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 07:40:51,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:51,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:51,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:40:51,369 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:51,370 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:51,370 INFO L85 PathProgramCache]: Analyzing trace with hash 569645893, now seen corresponding path program 1 times [2023-11-19 07:40:51,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:51,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126625128] [2023-11-19 07:40:51,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:51,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,426 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 07:40:51,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126625128] [2023-11-19 07:40:51,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126625128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:51,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106087903] [2023-11-19 07:40:51,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,430 INFO L87 Difference]: Start difference. First operand 1135 states and 1646 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:51,508 INFO L93 Difference]: Finished difference Result 3203 states and 4640 transitions. [2023-11-19 07:40:51,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-11-19 07:40:51,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:51,521 INFO L225 Difference]: With dead ends: 3203 [2023-11-19 07:40:51,521 INFO L226 Difference]: Without dead ends: 2105 [2023-11-19 07:40:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,523 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 56 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:51,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 231 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:51,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2023-11-19 07:40:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2023-11-19 07:40:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 2102 states have (on average 1.4262607040913415) internal successors, (2998), 2102 states have internal predecessors, (2998), 0 states have call successors, (0), 0 states 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 07:40:51,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2998 transitions. [2023-11-19 07:40:51,621 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2998 transitions. Word has length 57 [2023-11-19 07:40:51,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:51,621 INFO L495 AbstractCegarLoop]: Abstraction has 2103 states and 2998 transitions. [2023-11-19 07:40:51,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2998 transitions. [2023-11-19 07:40:51,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-19 07:40:51,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:51,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:51,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:40:51,623 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:51,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:51,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1183393248, now seen corresponding path program 1 times [2023-11-19 07:40:51,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:51,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881474122] [2023-11-19 07:40:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,703 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 07:40:51,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881474122] [2023-11-19 07:40:51,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881474122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:51,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756910828] [2023-11-19 07:40:51,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,707 INFO L87 Difference]: Start difference. First operand 2103 states and 2998 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 07:40:51,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:51,838 INFO L93 Difference]: Finished difference Result 4286 states and 6172 transitions. [2023-11-19 07:40:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-11-19 07:40:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:51,856 INFO L225 Difference]: With dead ends: 4286 [2023-11-19 07:40:51,857 INFO L226 Difference]: Without dead ends: 3099 [2023-11-19 07:40:51,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,860 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 57 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:51,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 230 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:40:51,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3099 states. [2023-11-19 07:40:51,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3099 to 3097. [2023-11-19 07:40:52,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3097 states, 3096 states have (on average 1.4186046511627908) internal successors, (4392), 3096 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 07:40:52,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 4392 transitions. [2023-11-19 07:40:52,016 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 4392 transitions. Word has length 59 [2023-11-19 07:40:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:52,016 INFO L495 AbstractCegarLoop]: Abstraction has 3097 states and 4392 transitions. [2023-11-19 07:40:52,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states 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 07:40:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 4392 transitions. [2023-11-19 07:40:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:40:52,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:52,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:52,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:40:52,020 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:52,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:52,020 INFO L85 PathProgramCache]: Analyzing trace with hash 735387530, now seen corresponding path program 1 times [2023-11-19 07:40:52,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:52,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613093313] [2023-11-19 07:40:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:52,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:52,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:40:52,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:52,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613093313] [2023-11-19 07:40:52,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613093313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:52,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:52,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:52,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143514013] [2023-11-19 07:40:52,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:52,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:52,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:52,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:52,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:52,226 INFO L87 Difference]: Start difference. First operand 3097 states and 4392 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 07:40:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:52,946 INFO L93 Difference]: Finished difference Result 19045 states and 27054 transitions. [2023-11-19 07:40:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:40:52,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:53,036 INFO L225 Difference]: With dead ends: 19045 [2023-11-19 07:40:53,036 INFO L226 Difference]: Without dead ends: 15987 [2023-11-19 07:40:53,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:53,043 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 623 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:53,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [623 Valid, 688 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:53,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15987 states. [2023-11-19 07:40:53,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15987 to 6153. [2023-11-19 07:40:53,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 6152 states have (on average 1.4135240572171652) internal successors, (8696), 6152 states have internal predecessors, (8696), 0 states have call successors, (0), 0 states 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 07:40:53,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 8696 transitions. [2023-11-19 07:40:53,526 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 8696 transitions. Word has length 76 [2023-11-19 07:40:53,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:53,527 INFO L495 AbstractCegarLoop]: Abstraction has 6153 states and 8696 transitions. [2023-11-19 07:40:53,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 07:40:53,527 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 8696 transitions. [2023-11-19 07:40:53,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:40:53,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:53,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:53,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:40:53,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:53,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:53,531 INFO L85 PathProgramCache]: Analyzing trace with hash -241819254, now seen corresponding path program 1 times [2023-11-19 07:40:53,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:53,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570017452] [2023-11-19 07:40:53,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:53,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 07:40:53,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:53,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570017452] [2023-11-19 07:40:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570017452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:53,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:53,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909053832] [2023-11-19 07:40:53,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:53,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:53,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:53,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:53,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:53,749 INFO L87 Difference]: Start difference. First operand 6153 states and 8696 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 07:40:54,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:54,556 INFO L93 Difference]: Finished difference Result 22101 states and 31358 transitions. [2023-11-19 07:40:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:54,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:40:54,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:54,623 INFO L225 Difference]: With dead ends: 22101 [2023-11-19 07:40:54,623 INFO L226 Difference]: Without dead ends: 19043 [2023-11-19 07:40:54,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:54,632 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 671 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:54,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 666 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:54,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19043 states. [2023-11-19 07:40:55,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19043 to 10745. [2023-11-19 07:40:55,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10745 states, 10744 states have (on average 1.4065524944154877) internal successors, (15112), 10744 states have internal predecessors, (15112), 0 states have call successors, (0), 0 states 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 07:40:55,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10745 states to 10745 states and 15112 transitions. [2023-11-19 07:40:55,281 INFO L78 Accepts]: Start accepts. Automaton has 10745 states and 15112 transitions. Word has length 76 [2023-11-19 07:40:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:55,281 INFO L495 AbstractCegarLoop]: Abstraction has 10745 states and 15112 transitions. [2023-11-19 07:40:55,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 07:40:55,281 INFO L276 IsEmpty]: Start isEmpty. Operand 10745 states and 15112 transitions. [2023-11-19 07:40:55,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:40:55,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:55,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:55,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:40:55,285 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:55,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1539113610, now seen corresponding path program 1 times [2023-11-19 07:40:55,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:55,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605336634] [2023-11-19 07:40:55,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:55,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:40:55,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:55,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605336634] [2023-11-19 07:40:55,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605336634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:55,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:55,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:55,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971614190] [2023-11-19 07:40:55,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:55,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:55,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:55,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:55,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:55,471 INFO L87 Difference]: Start difference. First operand 10745 states and 15112 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 07:40:56,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:56,533 INFO L93 Difference]: Finished difference Result 25157 states and 35662 transitions. [2023-11-19 07:40:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:40:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:56,580 INFO L225 Difference]: With dead ends: 25157 [2023-11-19 07:40:56,580 INFO L226 Difference]: Without dead ends: 22099 [2023-11-19 07:40:56,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:56,589 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 628 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:56,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 683 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:56,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22099 states. [2023-11-19 07:40:57,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22099 to 13801. [2023-11-19 07:40:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13801 states, 13800 states have (on average 1.4069565217391304) internal successors, (19416), 13800 states have internal predecessors, (19416), 0 states have call successors, (0), 0 states 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 07:40:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13801 states to 13801 states and 19416 transitions. [2023-11-19 07:40:57,335 INFO L78 Accepts]: Start accepts. Automaton has 13801 states and 19416 transitions. Word has length 76 [2023-11-19 07:40:57,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:57,336 INFO L495 AbstractCegarLoop]: Abstraction has 13801 states and 19416 transitions. [2023-11-19 07:40:57,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states 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 07:40:57,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13801 states and 19416 transitions. [2023-11-19 07:40:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:40:57,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:57,340 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:57,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:40:57,340 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:57,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:57,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1973649546, now seen corresponding path program 1 times [2023-11-19 07:40:57,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:57,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348970233] [2023-11-19 07:40:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:57,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 07:40:57,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:57,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348970233] [2023-11-19 07:40:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348970233] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:57,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:57,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773558573] [2023-11-19 07:40:57,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:57,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:57,559 INFO L87 Difference]: Start difference. First operand 13801 states and 19416 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 07:40:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:40:58,646 INFO L93 Difference]: Finished difference Result 28213 states and 39966 transitions. [2023-11-19 07:40:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:40:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-19 07:40:58,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:40:58,712 INFO L225 Difference]: With dead ends: 28213 [2023-11-19 07:40:58,713 INFO L226 Difference]: Without dead ends: 25155 [2023-11-19 07:40:58,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:40:58,723 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 575 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:40:58,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 771 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:40:58,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25155 states. [2023-11-19 07:40:59,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25155 to 16857. [2023-11-19 07:40:59,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16857 states, 16856 states have (on average 1.4072140484100617) internal successors, (23720), 16856 states have internal predecessors, (23720), 0 states have call successors, (0), 0 states 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 07:40:59,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16857 states to 16857 states and 23720 transitions. [2023-11-19 07:40:59,740 INFO L78 Accepts]: Start accepts. Automaton has 16857 states and 23720 transitions. Word has length 76 [2023-11-19 07:40:59,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:40:59,740 INFO L495 AbstractCegarLoop]: Abstraction has 16857 states and 23720 transitions. [2023-11-19 07:40:59,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 07:40:59,741 INFO L276 IsEmpty]: Start isEmpty. Operand 16857 states and 23720 transitions. [2023-11-19 07:40:59,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:40:59,745 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:40:59,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:59,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:40:59,746 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:40:59,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:59,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1811172837, now seen corresponding path program 1 times [2023-11-19 07:40:59,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:59,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867899504] [2023-11-19 07:40:59,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:59,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:59,950 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:40:59,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:59,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867899504] [2023-11-19 07:40:59,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867899504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:59,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:59,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:40:59,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641681150] [2023-11-19 07:40:59,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:59,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:59,953 INFO L87 Difference]: Start difference. First operand 16857 states and 23720 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 07:41:00,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:00,978 INFO L93 Difference]: Finished difference Result 29509 states and 41838 transitions. [2023-11-19 07:41:00,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:41:00,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 78 [2023-11-19 07:41:00,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:01,046 INFO L225 Difference]: With dead ends: 29509 [2023-11-19 07:41:01,046 INFO L226 Difference]: Without dead ends: 27331 [2023-11-19 07:41:01,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:41:01,057 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 619 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 786 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:01,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 786 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:41:01,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27331 states. [2023-11-19 07:41:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27331 to 19033. [2023-11-19 07:41:01,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19033 states, 19032 states have (on average 1.4094157208911307) internal successors, (26824), 19032 states have internal predecessors, (26824), 0 states have call successors, (0), 0 states 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 07:41:01,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19033 states to 19033 states and 26824 transitions. [2023-11-19 07:41:01,956 INFO L78 Accepts]: Start accepts. Automaton has 19033 states and 26824 transitions. Word has length 78 [2023-11-19 07:41:01,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:01,957 INFO L495 AbstractCegarLoop]: Abstraction has 19033 states and 26824 transitions. [2023-11-19 07:41:01,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 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 07:41:01,957 INFO L276 IsEmpty]: Start isEmpty. Operand 19033 states and 26824 transitions. [2023-11-19 07:41:01,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-19 07:41:01,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:01,961 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:41:01,962 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:01,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash 983576642, now seen corresponding path program 1 times [2023-11-19 07:41:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424467329] [2023-11-19 07:41:01,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:01,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:02,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:02,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424467329] [2023-11-19 07:41:02,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424467329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:02,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:02,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:02,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852850798] [2023-11-19 07:41:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:02,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:02,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:02,076 INFO L87 Difference]: Start difference. First operand 19033 states and 26824 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:02,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:02,592 INFO L93 Difference]: Finished difference Result 33201 states and 47023 transitions. [2023-11-19 07:41:02,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:02,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2023-11-19 07:41:02,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:02,611 INFO L225 Difference]: With dead ends: 33201 [2023-11-19 07:41:02,612 INFO L226 Difference]: Without dead ends: 14207 [2023-11-19 07:41:02,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:02,628 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 50 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:02,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 239 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14207 states. [2023-11-19 07:41:03,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14207 to 14205. [2023-11-19 07:41:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14205 states, 14204 states have (on average 1.410025344973247) internal successors, (20028), 14204 states have internal predecessors, (20028), 0 states have call successors, (0), 0 states 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 07:41:03,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14205 states to 14205 states and 20028 transitions. [2023-11-19 07:41:03,152 INFO L78 Accepts]: Start accepts. Automaton has 14205 states and 20028 transitions. Word has length 78 [2023-11-19 07:41:03,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:03,153 INFO L495 AbstractCegarLoop]: Abstraction has 14205 states and 20028 transitions. [2023-11-19 07:41:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:03,153 INFO L276 IsEmpty]: Start isEmpty. Operand 14205 states and 20028 transitions. [2023-11-19 07:41:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-19 07:41:03,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:03,159 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:03,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 07:41:03,161 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:03,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1327169193, now seen corresponding path program 1 times [2023-11-19 07:41:03,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:03,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447936472] [2023-11-19 07:41:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:03,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:03,304 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:03,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:03,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447936472] [2023-11-19 07:41:03,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447936472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:03,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:03,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:03,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547391852] [2023-11-19 07:41:03,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:03,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:03,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:03,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:03,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:03,306 INFO L87 Difference]: Start difference. First operand 14205 states and 20028 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:03,632 INFO L93 Difference]: Finished difference Result 21281 states and 30014 transitions. [2023-11-19 07:41:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2023-11-19 07:41:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:03,643 INFO L225 Difference]: With dead ends: 21281 [2023-11-19 07:41:03,643 INFO L226 Difference]: Without dead ends: 7135 [2023-11-19 07:41:03,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:03,658 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 45 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:03,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 224 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:03,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2023-11-19 07:41:04,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 7133. [2023-11-19 07:41:04,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7133 states, 7132 states have (on average 1.3937184520471115) internal successors, (9940), 7132 states have internal predecessors, (9940), 0 states have call successors, (0), 0 states 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 07:41:04,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 9940 transitions. [2023-11-19 07:41:04,024 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 9940 transitions. Word has length 79 [2023-11-19 07:41:04,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:04,024 INFO L495 AbstractCegarLoop]: Abstraction has 7133 states and 9940 transitions. [2023-11-19 07:41:04,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:04,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 9940 transitions. [2023-11-19 07:41:04,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:41:04,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:04,027 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 07:41:04,028 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:04,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1076795675, now seen corresponding path program 1 times [2023-11-19 07:41:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224492970] [2023-11-19 07:41:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224492970] [2023-11-19 07:41:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224492970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:04,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:04,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:04,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242399791] [2023-11-19 07:41:04,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:04,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:04,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:04,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:04,200 INFO L87 Difference]: Start difference. First operand 7133 states and 9940 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 07:41:04,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:04,349 INFO L93 Difference]: Finished difference Result 10673 states and 14882 transitions. [2023-11-19 07:41:04,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:04,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 07:41:04,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:04,355 INFO L225 Difference]: With dead ends: 10673 [2023-11-19 07:41:04,355 INFO L226 Difference]: Without dead ends: 3599 [2023-11-19 07:41:04,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:04,363 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 42 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:04,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 209 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:04,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3599 states. [2023-11-19 07:41:04,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3599 to 3597. [2023-11-19 07:41:04,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3597 states, 3596 states have (on average 1.3759733036707453) internal successors, (4948), 3596 states have internal predecessors, (4948), 0 states have call successors, (0), 0 states 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 07:41:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3597 states to 3597 states and 4948 transitions. [2023-11-19 07:41:04,567 INFO L78 Accepts]: Start accepts. Automaton has 3597 states and 4948 transitions. Word has length 81 [2023-11-19 07:41:04,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 3597 states and 4948 transitions. [2023-11-19 07:41:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 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 07:41:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 3597 states and 4948 transitions. [2023-11-19 07:41:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:41:04,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:04,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-19 07:41:04,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:04,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1091806707, now seen corresponding path program 1 times [2023-11-19 07:41:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280371483] [2023-11-19 07:41:04,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:04,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:04,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280371483] [2023-11-19 07:41:04,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280371483] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:04,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:04,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:04,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827624364] [2023-11-19 07:41:04,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:04,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:04,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:04,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:04,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:04,721 INFO L87 Difference]: Start difference. First operand 3597 states and 4948 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 07:41:04,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:04,813 INFO L93 Difference]: Finished difference Result 5369 states and 7394 transitions. [2023-11-19 07:41:04,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:04,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2023-11-19 07:41:04,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:04,816 INFO L225 Difference]: With dead ends: 5369 [2023-11-19 07:41:04,816 INFO L226 Difference]: Without dead ends: 1831 [2023-11-19 07:41:04,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:04,823 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:04,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 194 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:04,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1831 states. [2023-11-19 07:41:04,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1831 to 1829. [2023-11-19 07:41:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1828 states have (on average 1.3555798687089715) internal successors, (2478), 1828 states have internal predecessors, (2478), 0 states have call successors, (0), 0 states 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 07:41:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2478 transitions. [2023-11-19 07:41:04,937 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2478 transitions. Word has length 83 [2023-11-19 07:41:04,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:04,937 INFO L495 AbstractCegarLoop]: Abstraction has 1829 states and 2478 transitions. [2023-11-19 07:41:04,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 07:41:04,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2478 transitions. [2023-11-19 07:41:04,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 07:41:04,940 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:04,940 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:04,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:41:04,940 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:04,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1290232191, now seen corresponding path program 1 times [2023-11-19 07:41:04,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:04,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182535131] [2023-11-19 07:41:04,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:04,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:05,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182535131] [2023-11-19 07:41:05,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182535131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:05,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:05,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:41:05,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722868123] [2023-11-19 07:41:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:05,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:05,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:05,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:05,079 INFO L87 Difference]: Start difference. First operand 1829 states and 2478 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 07:41:05,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:05,132 INFO L93 Difference]: Finished difference Result 2717 states and 3689 transitions. [2023-11-19 07:41:05,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:41:05,133 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2023-11-19 07:41:05,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:05,134 INFO L225 Difference]: With dead ends: 2717 [2023-11-19 07:41:05,135 INFO L226 Difference]: Without dead ends: 947 [2023-11-19 07:41:05,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:05,137 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 36 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:05,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 179 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:41:05,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2023-11-19 07:41:05,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 945. [2023-11-19 07:41:05,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.3305084745762712) internal successors, (1256), 944 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 07:41:05,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1256 transitions. [2023-11-19 07:41:05,195 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1256 transitions. Word has length 85 [2023-11-19 07:41:05,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:05,195 INFO L495 AbstractCegarLoop]: Abstraction has 945 states and 1256 transitions. [2023-11-19 07:41:05,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states 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 07:41:05,196 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1256 transitions. [2023-11-19 07:41:05,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 07:41:05,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:05,198 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:05,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:41:05,198 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:05,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash -719663247, now seen corresponding path program 1 times [2023-11-19 07:41:05,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619976859] [2023-11-19 07:41:05,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:05,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:05,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619976859] [2023-11-19 07:41:05,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619976859] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:05,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638238902] [2023-11-19 07:41:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:05,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:05,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:05,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:05,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:41:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:05,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:41:05,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:06,246 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:41:06,246 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:41:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638238902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:06,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 4] total 16 [2023-11-19 07:41:06,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45749633] [2023-11-19 07:41:06,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:06,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 07:41:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:06,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 07:41:06,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-19 07:41:06,456 INFO L87 Difference]: Start difference. First operand 945 states and 1256 transitions. Second operand has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 07:41:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:41:08,418 INFO L93 Difference]: Finished difference Result 6586 states and 8740 transitions. [2023-11-19 07:41:08,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-19 07:41:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2023-11-19 07:41:08,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:41:08,425 INFO L225 Difference]: With dead ends: 6586 [2023-11-19 07:41:08,425 INFO L226 Difference]: Without dead ends: 5700 [2023-11-19 07:41:08,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 07:41:08,429 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 1770 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:41:08,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 699 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:41:08,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5700 states. [2023-11-19 07:41:08,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5700 to 5578. [2023-11-19 07:41:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5578 states, 5577 states have (on average 1.271830733369195) internal successors, (7093), 5577 states have internal predecessors, (7093), 0 states have call successors, (0), 0 states 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 07:41:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5578 states to 5578 states and 7093 transitions. [2023-11-19 07:41:08,733 INFO L78 Accepts]: Start accepts. Automaton has 5578 states and 7093 transitions. Word has length 87 [2023-11-19 07:41:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:41:08,733 INFO L495 AbstractCegarLoop]: Abstraction has 5578 states and 7093 transitions. [2023-11-19 07:41:08,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.3125) internal successors, (245), 16 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 07:41:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 5578 states and 7093 transitions. [2023-11-19 07:41:08,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-19 07:41:08,735 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:41:08,735 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:08,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:08,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:41:08,956 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:41:08,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:08,957 INFO L85 PathProgramCache]: Analyzing trace with hash 437252743, now seen corresponding path program 1 times [2023-11-19 07:41:08,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:08,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124846913] [2023-11-19 07:41:08,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:08,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:09,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:09,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:09,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124846913] [2023-11-19 07:41:09,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124846913] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:41:09,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809483578] [2023-11-19 07:41:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:09,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:41:09,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:41:09,749 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:41:09,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c19c8e0a-e702-4e75-8df5-b6ba14d08d2c/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:41:09,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:09,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:41:09,890 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:41:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:12,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:41:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:41:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809483578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:41:15,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:41:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 13] total 33 [2023-11-19 07:41:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777299150] [2023-11-19 07:41:15,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:41:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-19 07:41:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-19 07:41:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=927, Unknown=0, NotChecked=0, Total=1056 [2023-11-19 07:41:15,307 INFO L87 Difference]: Start difference. First operand 5578 states and 7093 transitions. Second operand has 33 states, 33 states have (on average 7.181818181818182) internal successors, (237), 33 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)