./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl --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 b86eed5380d57cac13df908fa4bd28a3c3af485a2a70f27e08920aaaec0ccb21 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:19:47,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:19:47,520 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:19:47,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:19:47,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:19:47,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:19:47,568 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:19:47,569 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:19:47,570 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:19:47,570 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:19:47,571 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:19:47,572 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:19:47,573 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:19:47,573 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:19:47,574 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:19:47,574 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:19:47,575 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:19:47,576 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:19:47,576 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:19:47,577 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:19:47,577 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:19:47,578 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:19:47,578 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:19:47,579 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:19:47,579 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:19:47,580 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:19:47,580 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:19:47,581 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:19:47,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:47,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:19:47,582 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:19:47,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:19:47,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:19:47,584 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:19:47,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:19:47,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:19:47,586 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:19:47,586 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:19:47,595 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:19:47,595 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_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b86eed5380d57cac13df908fa4bd28a3c3af485a2a70f27e08920aaaec0ccb21 [2023-11-12 02:19:47,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:19:47,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:19:47,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:19:47,963 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:19:47,964 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:19:47,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-11-12 02:19:51,065 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:51,401 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:51,402 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-11-12 02:19:51,416 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/data/ef2906c5a/1233dd492e654117b93c1ba2f84c2f61/FLAG29caa4fde [2023-11-12 02:19:51,432 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/data/ef2906c5a/1233dd492e654117b93c1ba2f84c2f61 [2023-11-12 02:19:51,435 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:51,439 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:51,442 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:51,444 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:51,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:51,451 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47aa2c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:51, skipping insertion in model container [2023-11-12 02:19:51,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:51" (1/1) ... [2023-11-12 02:19:51,529 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:51,862 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_b3b153bd-bd6a-4f7b-9981-728860121bc5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6696,6709] [2023-11-12 02:19:51,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:51,927 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:51,991 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_b3b153bd-bd6a-4f7b-9981-728860121bc5/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c[6696,6709] [2023-11-12 02:19:52,021 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:52,055 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:52,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52 WrapperNode [2023-11-12 02:19:52,056 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:52,057 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:52,058 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:52,058 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:52,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,078 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,121 INFO L138 Inliner]: procedures = 25, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 536 [2023-11-12 02:19:52,121 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:52,122 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:52,122 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:52,122 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:52,133 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,133 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,143 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,146 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,159 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,170 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,174 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:52,186 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:52,186 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:52,187 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:52,188 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (1/1) ... [2023-11-12 02:19:52,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:52,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:52,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:52,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:52,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:52,495 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:52,498 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:53,086 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:53,094 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:53,094 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:19:53,096 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:53 BoogieIcfgContainer [2023-11-12 02:19:53,097 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:53,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:53,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:53,152 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:53,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:51" (1/3) ... [2023-11-12 02:19:53,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f2e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:53, skipping insertion in model container [2023-11-12 02:19:53,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:52" (2/3) ... [2023-11-12 02:19:53,154 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@108f2e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:53, skipping insertion in model container [2023-11-12 02:19:53,154 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:53" (3/3) ... [2023-11-12 02:19:53,156 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.1.ufo.BOUNDED-12.pals.c.v+cfa-reducer.c [2023-11-12 02:19:53,173 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:53,173 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:19:53,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:19:53,234 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;@216a469f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:19:53,235 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:19:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 116 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:53,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-12 02:19:53,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:53,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:53,252 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:53,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash -866113193, now seen corresponding path program 1 times [2023-11-12 02:19:53,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:53,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261906932] [2023-11-12 02:19:53,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:53,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261906932] [2023-11-12 02:19:53,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261906932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:53,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:53,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:53,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070254316] [2023-11-12 02:19:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:53,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:53,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:53,851 INFO L87 Difference]: Start difference. First operand has 117 states, 114 states have (on average 1.7456140350877194) internal successors, (199), 116 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:53,939 INFO L93 Difference]: Finished difference Result 257 states and 416 transitions. [2023-11-12 02:19:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:53,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2023-11-12 02:19:53,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:53,953 INFO L225 Difference]: With dead ends: 257 [2023-11-12 02:19:53,953 INFO L226 Difference]: Without dead ends: 173 [2023-11-12 02:19:53,956 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 [2023-11-12 02:19:53,959 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 140 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:53,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 407 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:53,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-12 02:19:54,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 171. [2023-11-12 02:19:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 1.4352941176470588) internal successors, (244), 170 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 244 transitions. [2023-11-12 02:19:54,006 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 244 transitions. Word has length 72 [2023-11-12 02:19:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 244 transitions. [2023-11-12 02:19:54,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 244 transitions. [2023-11-12 02:19:54,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:19:54,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:54,012 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:54,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:19:54,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:54,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:54,014 INFO L85 PathProgramCache]: Analyzing trace with hash -566031041, now seen corresponding path program 1 times [2023-11-12 02:19:54,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:54,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598399067] [2023-11-12 02:19:54,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:54,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:54,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:54,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598399067] [2023-11-12 02:19:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598399067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:54,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031230364] [2023-11-12 02:19:54,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:54,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:54,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:54,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:54,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:54,259 INFO L87 Difference]: Start difference. First operand 171 states and 244 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2023-11-12 02:19:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:54,316 INFO L93 Difference]: Finished difference Result 411 states and 620 transitions. [2023-11-12 02:19:54,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:54,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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 73 [2023-11-12 02:19:54,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:54,321 INFO L225 Difference]: With dead ends: 411 [2023-11-12 02:19:54,325 INFO L226 Difference]: Without dead ends: 283 [2023-11-12 02:19:54,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:54,329 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 93 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:54,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 341 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:54,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-12 02:19:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2023-11-12 02:19:54,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 280 states have (on average 1.4857142857142858) internal successors, (416), 280 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 416 transitions. [2023-11-12 02:19:54,352 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 416 transitions. Word has length 73 [2023-11-12 02:19:54,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:54,353 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 416 transitions. [2023-11-12 02:19:54,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 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) [2023-11-12 02:19:54,353 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 416 transitions. [2023-11-12 02:19:54,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-12 02:19:54,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:54,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:54,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:19:54,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:54,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash -739923133, now seen corresponding path program 1 times [2023-11-12 02:19:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:54,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19387970] [2023-11-12 02:19:54,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:54,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:54,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19387970] [2023-11-12 02:19:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19387970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:54,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726012420] [2023-11-12 02:19:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:54,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:54,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:54,554 INFO L87 Difference]: Start difference. First operand 281 states and 416 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:54,580 INFO L93 Difference]: Finished difference Result 725 states and 1110 transitions. [2023-11-12 02:19:54,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:54,581 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2023-11-12 02:19:54,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:54,585 INFO L225 Difference]: With dead ends: 725 [2023-11-12 02:19:54,585 INFO L226 Difference]: Without dead ends: 487 [2023-11-12 02:19:54,587 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 [2023-11-12 02:19:54,588 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 88 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:54,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 337 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2023-11-12 02:19:54,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 485. [2023-11-12 02:19:54,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 1.512396694214876) internal successors, (732), 484 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 732 transitions. [2023-11-12 02:19:54,621 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 732 transitions. Word has length 74 [2023-11-12 02:19:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:54,622 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 732 transitions. [2023-11-12 02:19:54,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 732 transitions. [2023-11-12 02:19:54,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-12 02:19:54,624 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:54,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:54,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:19:54,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:54,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash 330068461, now seen corresponding path program 1 times [2023-11-12 02:19:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637673977] [2023-11-12 02:19:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:54,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:54,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637673977] [2023-11-12 02:19:54,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637673977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:54,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:54,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089548095] [2023-11-12 02:19:54,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:54,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:54,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:54,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:54,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:54,726 INFO L87 Difference]: Start difference. First operand 485 states and 732 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:54,752 INFO L93 Difference]: Finished difference Result 1305 states and 2006 transitions. [2023-11-12 02:19:54,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:54,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2023-11-12 02:19:54,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:54,759 INFO L225 Difference]: With dead ends: 1305 [2023-11-12 02:19:54,759 INFO L226 Difference]: Without dead ends: 863 [2023-11-12 02:19:54,762 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 [2023-11-12 02:19:54,763 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 83 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:54,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 333 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:54,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-12 02:19:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 861. [2023-11-12 02:19:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 860 states have (on average 1.5209302325581395) internal successors, (1308), 860 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1308 transitions. [2023-11-12 02:19:54,807 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1308 transitions. Word has length 75 [2023-11-12 02:19:54,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:54,808 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1308 transitions. [2023-11-12 02:19:54,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:54,808 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1308 transitions. [2023-11-12 02:19:54,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-12 02:19:54,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:54,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:54,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:19:54,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:54,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:54,811 INFO L85 PathProgramCache]: Analyzing trace with hash -298149753, now seen corresponding path program 1 times [2023-11-12 02:19:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431804705] [2023-11-12 02:19:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:54,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:54,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431804705] [2023-11-12 02:19:54,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431804705] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:54,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:54,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:54,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309148428] [2023-11-12 02:19:54,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:54,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:54,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:54,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:54,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:54,990 INFO L87 Difference]: Start difference. First operand 861 states and 1308 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:55,023 INFO L93 Difference]: Finished difference Result 2369 states and 3630 transitions. [2023-11-12 02:19:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:55,024 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2023-11-12 02:19:55,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:55,037 INFO L225 Difference]: With dead ends: 2369 [2023-11-12 02:19:55,037 INFO L226 Difference]: Without dead ends: 1551 [2023-11-12 02:19:55,039 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 [2023-11-12 02:19:55,045 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 78 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:55,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 329 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:55,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1551 states. [2023-11-12 02:19:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1551 to 1549. [2023-11-12 02:19:55,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1549 states, 1548 states have (on average 1.516795865633075) internal successors, (2348), 1548 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1549 states to 1549 states and 2348 transitions. [2023-11-12 02:19:55,095 INFO L78 Accepts]: Start accepts. Automaton has 1549 states and 2348 transitions. Word has length 76 [2023-11-12 02:19:55,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:55,098 INFO L495 AbstractCegarLoop]: Abstraction has 1549 states and 2348 transitions. [2023-11-12 02:19:55,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1549 states and 2348 transitions. [2023-11-12 02:19:55,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:19:55,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:55,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:55,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:19:55,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:55,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:55,106 INFO L85 PathProgramCache]: Analyzing trace with hash -2012894605, now seen corresponding path program 1 times [2023-11-12 02:19:55,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:55,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467871816] [2023-11-12 02:19:55,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:55,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:55,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467871816] [2023-11-12 02:19:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467871816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:55,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:55,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:55,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688592386] [2023-11-12 02:19:55,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:55,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:55,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:55,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:55,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:55,264 INFO L87 Difference]: Start difference. First operand 1549 states and 2348 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:55,306 INFO L93 Difference]: Finished difference Result 4305 states and 6542 transitions. [2023-11-12 02:19:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:19:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:55,323 INFO L225 Difference]: With dead ends: 4305 [2023-11-12 02:19:55,323 INFO L226 Difference]: Without dead ends: 2799 [2023-11-12 02:19:55,325 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 [2023-11-12 02:19:55,327 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 73 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:55,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 325 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:55,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2023-11-12 02:19:55,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2797. [2023-11-12 02:19:55,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 2796 states have (on average 1.503576537911302) internal successors, (4204), 2796 states have internal predecessors, (4204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 4204 transitions. [2023-11-12 02:19:55,445 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 4204 transitions. Word has length 77 [2023-11-12 02:19:55,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:55,445 INFO L495 AbstractCegarLoop]: Abstraction has 2797 states and 4204 transitions. [2023-11-12 02:19:55,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 4204 transitions. [2023-11-12 02:19:55,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-12 02:19:55,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:55,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:55,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:19:55,449 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:55,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:55,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1910583587, now seen corresponding path program 1 times [2023-11-12 02:19:55,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:55,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903658835] [2023-11-12 02:19:55,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:55,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:55,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:55,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:55,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903658835] [2023-11-12 02:19:55,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903658835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:55,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:55,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:55,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014494878] [2023-11-12 02:19:55,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:55,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:55,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:55,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:55,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:55,762 INFO L87 Difference]: Start difference. First operand 2797 states and 4204 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2023-11-12 02:19:56,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:56,372 INFO L93 Difference]: Finished difference Result 35845 states and 54136 transitions. [2023-11-12 02:19:56,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:19:56,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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 [2023-11-12 02:19:56,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:56,530 INFO L225 Difference]: With dead ends: 35845 [2023-11-12 02:19:56,531 INFO L226 Difference]: Without dead ends: 33091 [2023-11-12 02:19:56,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:19:56,547 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1604 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 3234 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:56,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 3234 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:19:56,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33091 states. [2023-11-12 02:19:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33091 to 5549. [2023-11-12 02:19:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5549 states, 5548 states have (on average 1.4960346070656092) internal successors, (8300), 5548 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:57,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5549 states to 5549 states and 8300 transitions. [2023-11-12 02:19:57,118 INFO L78 Accepts]: Start accepts. Automaton has 5549 states and 8300 transitions. Word has length 78 [2023-11-12 02:19:57,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:57,119 INFO L495 AbstractCegarLoop]: Abstraction has 5549 states and 8300 transitions. [2023-11-12 02:19:57,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 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) [2023-11-12 02:19:57,119 INFO L276 IsEmpty]: Start isEmpty. Operand 5549 states and 8300 transitions. [2023-11-12 02:19:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:19:57,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:57,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:57,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:19:57,126 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:57,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:57,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1197972063, now seen corresponding path program 1 times [2023-11-12 02:19:57,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:57,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390824361] [2023-11-12 02:19:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:57,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:57,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:57,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:57,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390824361] [2023-11-12 02:19:57,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390824361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:57,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:57,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:19:57,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258963644] [2023-11-12 02:19:57,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:57,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:57,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:57,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:57,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:57,251 INFO L87 Difference]: Start difference. First operand 5549 states and 8300 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:57,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:57,328 INFO L93 Difference]: Finished difference Result 13779 states and 20656 transitions. [2023-11-12 02:19:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:57,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-12 02:19:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:57,346 INFO L225 Difference]: With dead ends: 13779 [2023-11-12 02:19:57,346 INFO L226 Difference]: Without dead ends: 8273 [2023-11-12 02:19:57,353 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 [2023-11-12 02:19:57,356 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 67 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:57,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 293 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:19:57,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2023-11-12 02:19:57,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 8271. [2023-11-12 02:19:57,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 8270 states have (on average 1.4914147521160823) internal successors, (12334), 8270 states have internal predecessors, (12334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:57,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 12334 transitions. [2023-11-12 02:19:57,632 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 12334 transitions. Word has length 80 [2023-11-12 02:19:57,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:57,632 INFO L495 AbstractCegarLoop]: Abstraction has 8271 states and 12334 transitions. [2023-11-12 02:19:57,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:57,633 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 12334 transitions. [2023-11-12 02:19:57,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:19:57,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:57,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:57,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:19:57,635 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:57,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:57,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1218974718, now seen corresponding path program 1 times [2023-11-12 02:19:57,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:57,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094777452] [2023-11-12 02:19:57,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:57,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:58,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:58,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:58,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094777452] [2023-11-12 02:19:58,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094777452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:58,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:58,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:19:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283356228] [2023-11-12 02:19:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:58,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:19:58,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:58,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:19:58,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:58,214 INFO L87 Difference]: Start difference. First operand 8271 states and 12334 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:58,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:58,553 INFO L93 Difference]: Finished difference Result 16499 states and 24624 transitions. [2023-11-12 02:19:58,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:19:58,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2023-11-12 02:19:58,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:58,570 INFO L225 Difference]: With dead ends: 16499 [2023-11-12 02:19:58,570 INFO L226 Difference]: Without dead ends: 8273 [2023-11-12 02:19:58,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2023-11-12 02:19:58,582 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 442 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:58,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 677 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:19:58,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8273 states. [2023-11-12 02:19:58,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8273 to 8271. [2023-11-12 02:19:58,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8271 states, 8270 states have (on average 1.4798065296251512) internal successors, (12238), 8270 states have internal predecessors, (12238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8271 states to 8271 states and 12238 transitions. [2023-11-12 02:19:58,806 INFO L78 Accepts]: Start accepts. Automaton has 8271 states and 12238 transitions. Word has length 80 [2023-11-12 02:19:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:58,807 INFO L495 AbstractCegarLoop]: Abstraction has 8271 states and 12238 transitions. [2023-11-12 02:19:58,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 8271 states and 12238 transitions. [2023-11-12 02:19:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 02:19:58,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:58,808 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:58,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:19:58,809 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:58,809 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:58,810 INFO L85 PathProgramCache]: Analyzing trace with hash -868398721, now seen corresponding path program 1 times [2023-11-12 02:19:58,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:58,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576318358] [2023-11-12 02:19:58,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:58,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576318358] [2023-11-12 02:19:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576318358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:19:58,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474621466] [2023-11-12 02:19:58,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:58,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:19:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:58,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:19:58,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:19:58,937 INFO L87 Difference]: Start difference. First operand 8271 states and 12238 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:19:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:19:59,238 INFO L93 Difference]: Finished difference Result 22003 states and 32624 transitions. [2023-11-12 02:19:59,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:19:59,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 [2023-11-12 02:19:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:19:59,266 INFO L225 Difference]: With dead ends: 22003 [2023-11-12 02:19:59,267 INFO L226 Difference]: Without dead ends: 13777 [2023-11-12 02:19:59,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:19:59,277 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 611 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:19:59,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 150 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:19:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13777 states. [2023-11-12 02:19:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13777 to 13775. [2023-11-12 02:19:59,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13775 states, 13774 states have (on average 1.4739364019166545) internal successors, (20302), 13774 states have internal predecessors, (20302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 20302 transitions. [2023-11-12 02:19:59,644 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 20302 transitions. Word has length 81 [2023-11-12 02:19:59,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:19:59,644 INFO L495 AbstractCegarLoop]: Abstraction has 13775 states and 20302 transitions. [2023-11-12 02:19:59,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:19:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 20302 transitions. [2023-11-12 02:19:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 02:19:59,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:19:59,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:59,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:19:59,655 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:19:59,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:59,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1685151460, now seen corresponding path program 1 times [2023-11-12 02:19:59,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:59,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29056168] [2023-11-12 02:19:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:59,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:59,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29056168] [2023-11-12 02:19:59,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29056168] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:59,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:59,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:19:59,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089621670] [2023-11-12 02:19:59,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:59,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:19:59,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:59,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:19:59,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:19:59,828 INFO L87 Difference]: Start difference. First operand 13775 states and 20302 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:20:00,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:00,030 INFO L93 Difference]: Finished difference Result 27505 states and 40559 transitions. [2023-11-12 02:20:00,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:00,031 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 [2023-11-12 02:20:00,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:00,061 INFO L225 Difference]: With dead ends: 27505 [2023-11-12 02:20:00,062 INFO L226 Difference]: Without dead ends: 13775 [2023-11-12 02:20:00,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:00,078 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 344 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:00,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 127 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:00,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13775 states. [2023-11-12 02:20:00,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13775 to 13775. [2023-11-12 02:20:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13775 states, 13774 states have (on average 1.4623203136343836) internal successors, (20142), 13774 states have internal predecessors, (20142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:00,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 20142 transitions. [2023-11-12 02:20:00,539 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 20142 transitions. Word has length 81 [2023-11-12 02:20:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:00,539 INFO L495 AbstractCegarLoop]: Abstraction has 13775 states and 20142 transitions. [2023-11-12 02:20:00,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:20:00,540 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 20142 transitions. [2023-11-12 02:20:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 02:20:00,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:00,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:00,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:20:00,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:00,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:00,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1744283447, now seen corresponding path program 1 times [2023-11-12 02:20:00,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:00,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540254475] [2023-11-12 02:20:00,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:00,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:00,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:00,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540254475] [2023-11-12 02:20:00,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540254475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:00,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:00,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:20:00,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012437280] [2023-11-12 02:20:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:00,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:00,666 INFO L87 Difference]: Start difference. First operand 13775 states and 20142 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:20:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:00,857 INFO L93 Difference]: Finished difference Result 27505 states and 40239 transitions. [2023-11-12 02:20:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:20:00,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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 [2023-11-12 02:20:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:00,885 INFO L225 Difference]: With dead ends: 27505 [2023-11-12 02:20:00,885 INFO L226 Difference]: Without dead ends: 13775 [2023-11-12 02:20:00,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:20:00,900 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 367 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:00,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 111 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:00,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13775 states. [2023-11-12 02:20:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13775 to 13775. [2023-11-12 02:20:01,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13775 states, 13774 states have (on average 1.4507042253521127) internal successors, (19982), 13774 states have internal predecessors, (19982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:01,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13775 states to 13775 states and 19982 transitions. [2023-11-12 02:20:01,214 INFO L78 Accepts]: Start accepts. Automaton has 13775 states and 19982 transitions. Word has length 81 [2023-11-12 02:20:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:01,215 INFO L495 AbstractCegarLoop]: Abstraction has 13775 states and 19982 transitions. [2023-11-12 02:20:01,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 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) [2023-11-12 02:20:01,215 INFO L276 IsEmpty]: Start isEmpty. Operand 13775 states and 19982 transitions. [2023-11-12 02:20:01,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-12 02:20:01,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:01,216 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:01,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:20:01,217 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:01,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:01,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1787820142, now seen corresponding path program 1 times [2023-11-12 02:20:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:01,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114431561] [2023-11-12 02:20:01,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:01,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:01,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:01,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114431561] [2023-11-12 02:20:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114431561] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:01,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:20:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145159390] [2023-11-12 02:20:01,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:20:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:01,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:20:01,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:20:01,623 INFO L87 Difference]: Start difference. First operand 13775 states and 19982 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2023-11-12 02:20:01,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:01,749 INFO L93 Difference]: Finished difference Result 20669 states and 29874 transitions. [2023-11-12 02:20:01,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:20:01,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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 [2023-11-12 02:20:01,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:01,793 INFO L225 Difference]: With dead ends: 20669 [2023-11-12 02:20:01,793 INFO L226 Difference]: Without dead ends: 20667 [2023-11-12 02:20:01,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:20:01,801 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 199 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:01,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 681 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:20:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2023-11-12 02:20:02,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 14031. [2023-11-12 02:20:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14031 states, 14030 states have (on average 1.4310762651461155) internal successors, (20078), 14030 states have internal predecessors, (20078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:02,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14031 states to 14031 states and 20078 transitions. [2023-11-12 02:20:02,207 INFO L78 Accepts]: Start accepts. Automaton has 14031 states and 20078 transitions. Word has length 81 [2023-11-12 02:20:02,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:02,208 INFO L495 AbstractCegarLoop]: Abstraction has 14031 states and 20078 transitions. [2023-11-12 02:20:02,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 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) [2023-11-12 02:20:02,208 INFO L276 IsEmpty]: Start isEmpty. Operand 14031 states and 20078 transitions. [2023-11-12 02:20:02,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:02,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:02,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:02,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:20:02,216 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:02,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:02,216 INFO L85 PathProgramCache]: Analyzing trace with hash 333029362, now seen corresponding path program 1 times [2023-11-12 02:20:02,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:02,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137133364] [2023-11-12 02:20:02,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:02,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:20:02,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:02,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137133364] [2023-11-12 02:20:02,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137133364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:02,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:02,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:02,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284986629] [2023-11-12 02:20:02,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:02,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:02,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:02,475 INFO L87 Difference]: Start difference. First operand 14031 states and 20078 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:03,225 INFO L93 Difference]: Finished difference Result 99387 states and 142260 transitions. [2023-11-12 02:20:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:03,230 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-12 02:20:03,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:03,409 INFO L225 Difference]: With dead ends: 99387 [2023-11-12 02:20:03,410 INFO L226 Difference]: Without dead ends: 88121 [2023-11-12 02:20:03,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:03,430 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1315 mSDsluCounter, 1382 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1637 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:03,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1637 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:03,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88121 states. [2023-11-12 02:20:04,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88121 to 26671. [2023-11-12 02:20:04,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26671 states, 26670 states have (on average 1.425946756655418) internal successors, (38030), 26670 states have internal predecessors, (38030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:04,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26671 states to 26671 states and 38030 transitions. [2023-11-12 02:20:04,539 INFO L78 Accepts]: Start accepts. Automaton has 26671 states and 38030 transitions. Word has length 111 [2023-11-12 02:20:04,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:04,539 INFO L495 AbstractCegarLoop]: Abstraction has 26671 states and 38030 transitions. [2023-11-12 02:20:04,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 8 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:04,540 INFO L276 IsEmpty]: Start isEmpty. Operand 26671 states and 38030 transitions. [2023-11-12 02:20:04,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:04,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:04,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:04,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:20:04,548 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:04,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:04,548 INFO L85 PathProgramCache]: Analyzing trace with hash -317771784, now seen corresponding path program 1 times [2023-11-12 02:20:04,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:04,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401018508] [2023-11-12 02:20:04,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:04,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:04,937 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:20:04,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:04,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401018508] [2023-11-12 02:20:04,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401018508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:04,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:04,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170922180] [2023-11-12 02:20:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:04,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:04,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:04,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:04,940 INFO L87 Difference]: Start difference. First operand 26671 states and 38030 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:05,785 INFO L93 Difference]: Finished difference Result 113371 states and 162164 transitions. [2023-11-12 02:20:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:05,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 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 111 [2023-11-12 02:20:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:05,964 INFO L225 Difference]: With dead ends: 113371 [2023-11-12 02:20:05,964 INFO L226 Difference]: Without dead ends: 99385 [2023-11-12 02:20:06,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:06,004 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 1316 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:06,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 1579 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99385 states. [2023-11-12 02:20:07,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99385 to 46159. [2023-11-12 02:20:07,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46159 states, 46158 states have (on average 1.4228952727587851) internal successors, (65678), 46158 states have internal predecessors, (65678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46159 states to 46159 states and 65678 transitions. [2023-11-12 02:20:07,322 INFO L78 Accepts]: Start accepts. Automaton has 46159 states and 65678 transitions. Word has length 111 [2023-11-12 02:20:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:07,323 INFO L495 AbstractCegarLoop]: Abstraction has 46159 states and 65678 transitions. [2023-11-12 02:20:07,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 46159 states and 65678 transitions. [2023-11-12 02:20:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:07,332 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:07,332 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:07,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:20:07,333 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:07,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:07,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2001758078, now seen corresponding path program 1 times [2023-11-12 02:20:07,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:07,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880874012] [2023-11-12 02:20:07,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:07,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:07,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:20:07,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:07,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880874012] [2023-11-12 02:20:07,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880874012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:07,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:07,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:07,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280484144] [2023-11-12 02:20:07,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:07,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:07,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:07,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:07,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:07,587 INFO L87 Difference]: Start difference. First operand 46159 states and 65678 transitions. Second operand has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:08,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:08,402 INFO L93 Difference]: Finished difference Result 127355 states and 182036 transitions. [2023-11-12 02:20:08,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:08,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 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 111 [2023-11-12 02:20:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:08,584 INFO L225 Difference]: With dead ends: 127355 [2023-11-12 02:20:08,584 INFO L226 Difference]: Without dead ends: 113369 [2023-11-12 02:20:08,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:08,639 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1407 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:08,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1479 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:08,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113369 states. [2023-11-12 02:20:09,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113369 to 60143. [2023-11-12 02:20:09,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60143 states, 60142 states have (on average 1.4224668285058695) internal successors, (85550), 60142 states have internal predecessors, (85550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60143 states to 60143 states and 85550 transitions. [2023-11-12 02:20:10,049 INFO L78 Accepts]: Start accepts. Automaton has 60143 states and 85550 transitions. Word has length 111 [2023-11-12 02:20:10,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:10,050 INFO L495 AbstractCegarLoop]: Abstraction has 60143 states and 85550 transitions. [2023-11-12 02:20:10,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.5) internal successors, (108), 8 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:10,050 INFO L276 IsEmpty]: Start isEmpty. Operand 60143 states and 85550 transitions. [2023-11-12 02:20:10,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:10,070 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:10,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:10,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:20:10,071 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:10,071 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:10,072 INFO L85 PathProgramCache]: Analyzing trace with hash 277216016, now seen corresponding path program 1 times [2023-11-12 02:20:10,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:10,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197367318] [2023-11-12 02:20:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:10,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:10,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:10,373 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:20:10,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:10,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197367318] [2023-11-12 02:20:10,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197367318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:10,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:10,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:10,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696839256] [2023-11-12 02:20:10,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:10,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:10,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:10,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:10,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:10,377 INFO L87 Difference]: Start difference. First operand 60143 states and 85550 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:10,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:10,917 INFO L93 Difference]: Finished difference Result 141339 states and 201908 transitions. [2023-11-12 02:20:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:10,918 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 111 [2023-11-12 02:20:10,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:11,068 INFO L225 Difference]: With dead ends: 141339 [2023-11-12 02:20:11,068 INFO L226 Difference]: Without dead ends: 127353 [2023-11-12 02:20:11,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:11,107 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 1331 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1595 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:11,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 1595 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:11,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127353 states. [2023-11-12 02:20:12,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127353 to 74127. [2023-11-12 02:20:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74127 states, 74126 states have (on average 1.4222000377735207) internal successors, (105422), 74126 states have internal predecessors, (105422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:12,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74127 states to 74127 states and 105422 transitions. [2023-11-12 02:20:12,794 INFO L78 Accepts]: Start accepts. Automaton has 74127 states and 105422 transitions. Word has length 111 [2023-11-12 02:20:12,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:12,795 INFO L495 AbstractCegarLoop]: Abstraction has 74127 states and 105422 transitions. [2023-11-12 02:20:12,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:12,796 INFO L276 IsEmpty]: Start isEmpty. Operand 74127 states and 105422 transitions. [2023-11-12 02:20:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:12,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:12,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:12,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:20:12,808 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:12,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:12,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1431162122, now seen corresponding path program 1 times [2023-11-12 02:20:12,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:12,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005228095] [2023-11-12 02:20:12,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:12,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:12,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:20:13,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:13,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005228095] [2023-11-12 02:20:13,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005228095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:13,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:13,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:13,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271424620] [2023-11-12 02:20:13,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:13,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:13,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:13,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:13,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:13,073 INFO L87 Difference]: Start difference. First operand 74127 states and 105422 transitions. Second operand has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:14,081 INFO L93 Difference]: Finished difference Result 155323 states and 221780 transitions. [2023-11-12 02:20:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:14,083 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2023-11-12 02:20:14,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:14,368 INFO L225 Difference]: With dead ends: 155323 [2023-11-12 02:20:14,368 INFO L226 Difference]: Without dead ends: 141337 [2023-11-12 02:20:14,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:14,421 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 1167 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:14,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 1675 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:14,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141337 states. [2023-11-12 02:20:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141337 to 88111. [2023-11-12 02:20:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88111 states, 88110 states have (on average 1.4220179321302917) internal successors, (125294), 88110 states have internal predecessors, (125294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:16,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88111 states to 88111 states and 125294 transitions. [2023-11-12 02:20:16,397 INFO L78 Accepts]: Start accepts. Automaton has 88111 states and 125294 transitions. Word has length 111 [2023-11-12 02:20:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:16,397 INFO L495 AbstractCegarLoop]: Abstraction has 88111 states and 125294 transitions. [2023-11-12 02:20:16,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.25) internal successors, (106), 8 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 88111 states and 125294 transitions. [2023-11-12 02:20:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-12 02:20:16,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:16,413 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:16,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:20:16,413 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:16,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash 573261444, now seen corresponding path program 1 times [2023-11-12 02:20:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701339896] [2023-11-12 02:20:16,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:16,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:16,695 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-12 02:20:16,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:16,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701339896] [2023-11-12 02:20:16,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701339896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:20:16,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:20:16,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:20:16,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574117131] [2023-11-12 02:20:16,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:20:16,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:20:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:16,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:20:16,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:20:16,699 INFO L87 Difference]: Start difference. First operand 88111 states and 125294 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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) [2023-11-12 02:20:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:20:18,038 INFO L93 Difference]: Finished difference Result 169307 states and 241652 transitions. [2023-11-12 02:20:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:20:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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) Word has length 111 [2023-11-12 02:20:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:20:18,242 INFO L225 Difference]: With dead ends: 169307 [2023-11-12 02:20:18,242 INFO L226 Difference]: Without dead ends: 155321 [2023-11-12 02:20:18,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:20:18,279 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1163 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 1775 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:20:18,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1163 Valid, 1775 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:20:18,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155321 states. [2023-11-12 02:20:19,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155321 to 102095. [2023-11-12 02:20:19,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102095 states, 102094 states have (on average 1.4218857131662976) internal successors, (145166), 102094 states have internal predecessors, (145166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:20:20,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102095 states to 102095 states and 145166 transitions. [2023-11-12 02:20:20,592 INFO L78 Accepts]: Start accepts. Automaton has 102095 states and 145166 transitions. Word has length 111 [2023-11-12 02:20:20,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:20:20,592 INFO L495 AbstractCegarLoop]: Abstraction has 102095 states and 145166 transitions. [2023-11-12 02:20:20,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 8 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) [2023-11-12 02:20:20,593 INFO L276 IsEmpty]: Start isEmpty. Operand 102095 states and 145166 transitions. [2023-11-12 02:20:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 02:20:20,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:20:20,608 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:20:20,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:20:20,608 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:20:20,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:20:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1369680278, now seen corresponding path program 1 times [2023-11-12 02:20:20,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:20:20,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488929798] [2023-11-12 02:20:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:20:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:21,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:20:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488929798] [2023-11-12 02:20:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488929798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:20:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151443303] [2023-11-12 02:20:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:20:21,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:20:21,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:20:21,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:20:21,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b3b153bd-bd6a-4f7b-9981-728860121bc5/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:20:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:20:21,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-12 02:20:21,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:20:22,189 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:22,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:20:23,468 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:20:23,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151443303] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:20:23,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:20:23,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2023-11-12 02:20:23,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017971603] [2023-11-12 02:20:23,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:20:23,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-12 02:20:23,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:20:23,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-12 02:20:23,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=556, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:20:23,472 INFO L87 Difference]: Start difference. First operand 102095 states and 145166 transitions. Second operand has 26 states, 26 states have (on average 12.26923076923077) internal successors, (319), 25 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)