./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/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_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/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 64bit --witnessprinter.graph.data.programhash 222b14b2569faca05dcbf2bfc0919e64cef2d3bef8d6862959ccf7f7e6419270 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:53,284 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:53,404 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:24:53,413 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:53,414 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:53,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:53,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:53,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:53,448 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:53,449 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:53,450 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:53,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:53,451 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:53,456 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:53,457 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:53,457 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:53,459 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:53,459 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:53,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:53,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:53,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:53,462 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:53,463 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:53,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:53,464 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:53,464 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:53,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:53,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:53,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:53,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:53,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:53,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:53,469 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:53,469 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:53,469 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:53,470 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:53,470 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_b6fff001-0a35-448b-945d-7ba6b062f95a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222b14b2569faca05dcbf2bfc0919e64cef2d3bef8d6862959ccf7f7e6419270 [2023-11-12 02:24:53,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:53,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:53,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:53,841 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:53,841 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:53,843 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-12 02:24:56,887 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:57,323 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:57,324 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-12 02:24:57,352 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/data/f1ffeeb7a/3a7cbcb1ccf447bb99999b5d8959ea41/FLAGad96e2cb4 [2023-11-12 02:24:57,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/data/f1ffeeb7a/3a7cbcb1ccf447bb99999b5d8959ea41 [2023-11-12 02:24:57,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:57,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:57,374 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:57,374 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:57,380 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:57,381 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:57" (1/1) ... [2023-11-12 02:24:57,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9506c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:57, skipping insertion in model container [2023-11-12 02:24:57,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:57" (1/1) ... [2023-11-12 02:24:57,473 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:57,728 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_b6fff001-0a35-448b-945d-7ba6b062f95a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1176,1189] [2023-11-12 02:24:58,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:58,192 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:58,205 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_b6fff001-0a35-448b-945d-7ba6b062f95a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.anderson.2.prop1-back-serstep.c[1176,1189] [2023-11-12 02:24:58,467 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:58,483 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:58,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58 WrapperNode [2023-11-12 02:24:58,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:58,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:58,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:58,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:58,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:58,580 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,250 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 6147 [2023-11-12 02:24:59,251 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:59,252 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:59,253 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:59,253 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:59,263 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,445 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,445 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,755 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:59,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:59,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:59,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:59,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (1/1) ... [2023-11-12 02:24:59,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:59,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:59,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:25:00,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b6fff001-0a35-448b-945d-7ba6b062f95a/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:25:00,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:25:00,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:25:00,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:25:00,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:25:00,475 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:25:00,477 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:25:05,601 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:25:05,624 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:25:05,624 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:25:05,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:05 BoogieIcfgContainer [2023-11-12 02:25:05,629 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:25:05,634 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:25:05,634 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:25:05,637 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:25:05,638 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:57" (1/3) ... [2023-11-12 02:25:05,639 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3f125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:05, skipping insertion in model container [2023-11-12 02:25:05,639 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:58" (2/3) ... [2023-11-12 02:25:05,641 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a3f125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:25:05, skipping insertion in model container [2023-11-12 02:25:05,643 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:25:05" (3/3) ... [2023-11-12 02:25:05,645 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.anderson.2.prop1-back-serstep.c [2023-11-12 02:25:05,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:25:05,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:25:05,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:25:05,766 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;@112db221, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:25:05,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:25:05,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 1391 states, 1389 states have (on average 1.668106551475882) internal successors, (2317), 1390 states have internal predecessors, (2317), 0 states have call successors, (0), 0 states 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 02:25:05,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-11-12 02:25:05,793 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:05,794 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:05,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:05,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:05,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1285879715, now seen corresponding path program 1 times [2023-11-12 02:25:05,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:05,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480607150] [2023-11-12 02:25:05,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:05,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:07,661 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 02:25:07,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:07,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480607150] [2023-11-12 02:25:07,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480607150] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:07,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:07,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:07,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921383670] [2023-11-12 02:25:07,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:07,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:07,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:07,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:07,736 INFO L87 Difference]: Start difference. First operand has 1391 states, 1389 states have (on average 1.668106551475882) internal successors, (2317), 1390 states have internal predecessors, (2317), 0 states have call successors, (0), 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 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 02:25:10,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:10,317 INFO L93 Difference]: Finished difference Result 4017 states and 6701 transitions. [2023-11-12 02:25:10,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:10,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 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 185 [2023-11-12 02:25:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:10,350 INFO L225 Difference]: With dead ends: 4017 [2023-11-12 02:25:10,351 INFO L226 Difference]: Without dead ends: 2700 [2023-11-12 02:25:10,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:10,362 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6575 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6575 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:10,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6575 Valid, 5320 Invalid, 1614 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-12 02:25:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-12 02:25:10,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1483. [2023-11-12 02:25:10,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1483 states, 1482 states have (on average 1.665991902834008) internal successors, (2469), 1482 states have internal predecessors, (2469), 0 states have call successors, (0), 0 states 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 02:25:10,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1483 states to 1483 states and 2469 transitions. [2023-11-12 02:25:10,508 INFO L78 Accepts]: Start accepts. Automaton has 1483 states and 2469 transitions. Word has length 185 [2023-11-12 02:25:10,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:10,511 INFO L495 AbstractCegarLoop]: Abstraction has 1483 states and 2469 transitions. [2023-11-12 02:25:10,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 0 states have call successors, (0), 0 states 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 02:25:10,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1483 states and 2469 transitions. [2023-11-12 02:25:10,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-12 02:25:10,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:10,519 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:10,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:25:10,520 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:10,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1054320979, now seen corresponding path program 1 times [2023-11-12 02:25:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249250674] [2023-11-12 02:25:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:11,312 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 02:25:11,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249250674] [2023-11-12 02:25:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249250674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:11,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605885108] [2023-11-12 02:25:11,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:11,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:11,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:11,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:11,320 INFO L87 Difference]: Start difference. First operand 1483 states and 2469 transitions. Second operand has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 02:25:13,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:13,765 INFO L93 Difference]: Finished difference Result 4061 states and 6758 transitions. [2023-11-12 02:25:13,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:13,767 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 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 186 [2023-11-12 02:25:13,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:13,783 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:13,783 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:13,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:13,787 INFO L413 NwaCegarLoop]: 1920 mSDtfsCounter, 6592 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6592 SdHoareTripleChecker+Valid, 7793 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:13,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6592 Valid, 7793 Invalid, 1617 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-12 02:25:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:13,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1488. [2023-11-12 02:25:13,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1488 states, 1487 states have (on average 1.6650975117686617) internal successors, (2476), 1487 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states 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 02:25:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2476 transitions. [2023-11-12 02:25:13,837 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2476 transitions. Word has length 186 [2023-11-12 02:25:13,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:13,838 INFO L495 AbstractCegarLoop]: Abstraction has 1488 states and 2476 transitions. [2023-11-12 02:25:13,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.0) internal successors, (186), 6 states have internal predecessors, (186), 0 states have call successors, (0), 0 states 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 02:25:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2476 transitions. [2023-11-12 02:25:13,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-12 02:25:13,842 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:13,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:13,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:25:13,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:13,843 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:13,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1334248233, now seen corresponding path program 1 times [2023-11-12 02:25:13,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:13,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247211590] [2023-11-12 02:25:13,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:13,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:14,385 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 02:25:14,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:14,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247211590] [2023-11-12 02:25:14,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247211590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:14,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:14,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:14,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687157389] [2023-11-12 02:25:14,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:14,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:14,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:14,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:14,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:14,390 INFO L87 Difference]: Start difference. First operand 1488 states and 2476 transitions. Second operand has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:25:16,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:16,683 INFO L93 Difference]: Finished difference Result 4061 states and 6757 transitions. [2023-11-12 02:25:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:16,685 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 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 187 [2023-11-12 02:25:16,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:16,707 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:16,707 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:16,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:16,726 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 6585 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6585 SdHoareTripleChecker+Valid, 7794 SdHoareTripleChecker+Invalid, 1616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:16,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6585 Valid, 7794 Invalid, 1616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [24 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-12 02:25:16,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:16,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1494. [2023-11-12 02:25:16,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1493 states have (on average 1.66443402545211) internal successors, (2485), 1493 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states 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 02:25:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2485 transitions. [2023-11-12 02:25:16,785 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2485 transitions. Word has length 187 [2023-11-12 02:25:16,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:16,787 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2485 transitions. [2023-11-12 02:25:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.166666666666668) internal successors, (187), 6 states have internal predecessors, (187), 0 states have call successors, (0), 0 states 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 02:25:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2485 transitions. [2023-11-12 02:25:16,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-12 02:25:16,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:16,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:16,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:25:16,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:16,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:16,799 INFO L85 PathProgramCache]: Analyzing trace with hash 349018953, now seen corresponding path program 1 times [2023-11-12 02:25:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:16,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187139755] [2023-11-12 02:25:16,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:16,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:17,641 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 02:25:17,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:17,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187139755] [2023-11-12 02:25:17,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187139755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:17,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:17,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:17,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741353542] [2023-11-12 02:25:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:17,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:17,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:17,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:17,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:17,646 INFO L87 Difference]: Start difference. First operand 1494 states and 2485 transitions. Second operand has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:25:19,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:19,732 INFO L93 Difference]: Finished difference Result 4013 states and 6685 transitions. [2023-11-12 02:25:19,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:19,733 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-11-12 02:25:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:19,750 INFO L225 Difference]: With dead ends: 4013 [2023-11-12 02:25:19,751 INFO L226 Difference]: Without dead ends: 2700 [2023-11-12 02:25:19,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:19,757 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6558 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6558 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:19,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6558 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:25:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-12 02:25:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1495. [2023-11-12 02:25:19,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1494 states have (on average 1.6639892904953146) internal successors, (2486), 1494 states have internal predecessors, (2486), 0 states have call successors, (0), 0 states 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 02:25:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2486 transitions. [2023-11-12 02:25:19,805 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2486 transitions. Word has length 188 [2023-11-12 02:25:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:19,806 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2486 transitions. [2023-11-12 02:25:19,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 37.6) internal successors, (188), 5 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:25:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2486 transitions. [2023-11-12 02:25:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-12 02:25:19,809 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:19,809 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:19,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:25:19,810 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:19,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:19,811 INFO L85 PathProgramCache]: Analyzing trace with hash 294626055, now seen corresponding path program 1 times [2023-11-12 02:25:19,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:19,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138415687] [2023-11-12 02:25:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:19,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:20,355 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 02:25:20,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:20,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138415687] [2023-11-12 02:25:20,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138415687] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:20,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:20,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:20,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314781418] [2023-11-12 02:25:20,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:20,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:20,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:20,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:20,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:20,360 INFO L87 Difference]: Start difference. First operand 1495 states and 2486 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:25:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:21,862 INFO L93 Difference]: Finished difference Result 4061 states and 6755 transitions. [2023-11-12 02:25:21,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:21,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 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 188 [2023-11-12 02:25:21,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:21,880 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:21,882 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:21,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:21,885 INFO L413 NwaCegarLoop]: 1923 mSDtfsCounter, 8660 mSDsluCounter, 4160 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8660 SdHoareTripleChecker+Valid, 6083 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:21,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8660 Valid, 6083 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:25:21,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:21,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1500. [2023-11-12 02:25:21,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1500 states, 1499 states have (on average 1.6631087391594397) internal successors, (2493), 1499 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states 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 02:25:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1500 states to 1500 states and 2493 transitions. [2023-11-12 02:25:21,934 INFO L78 Accepts]: Start accepts. Automaton has 1500 states and 2493 transitions. Word has length 188 [2023-11-12 02:25:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:21,935 INFO L495 AbstractCegarLoop]: Abstraction has 1500 states and 2493 transitions. [2023-11-12 02:25:21,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 6 states have internal predecessors, (188), 0 states have call successors, (0), 0 states 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 02:25:21,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1500 states and 2493 transitions. [2023-11-12 02:25:21,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-11-12 02:25:21,938 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:21,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:25:21,939 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:21,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash 332924427, now seen corresponding path program 1 times [2023-11-12 02:25:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:21,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901180782] [2023-11-12 02:25:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:25:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:22,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901180782] [2023-11-12 02:25:22,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901180782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:22,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:22,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:22,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739662423] [2023-11-12 02:25:22,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:22,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:22,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:22,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:22,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:22,539 INFO L87 Difference]: Start difference. First operand 1500 states and 2493 transitions. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 02:25:24,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:24,667 INFO L93 Difference]: Finished difference Result 4061 states and 6754 transitions. [2023-11-12 02:25:24,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:24,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 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 189 [2023-11-12 02:25:24,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:24,684 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:24,684 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:24,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:24,688 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 6567 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1589 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6567 SdHoareTripleChecker+Valid, 7797 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:24,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6567 Valid, 7797 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1589 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-12 02:25:24,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1509. [2023-11-12 02:25:24,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1508 states have (on average 1.6624668435013263) internal successors, (2507), 1508 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states 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 02:25:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 2507 transitions. [2023-11-12 02:25:24,736 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 2507 transitions. Word has length 189 [2023-11-12 02:25:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:24,736 INFO L495 AbstractCegarLoop]: Abstraction has 1509 states and 2507 transitions. [2023-11-12 02:25:24,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 02:25:24,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 2507 transitions. [2023-11-12 02:25:24,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-12 02:25:24,739 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:24,740 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:24,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:25:24,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:24,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:24,741 INFO L85 PathProgramCache]: Analyzing trace with hash -452741161, now seen corresponding path program 1 times [2023-11-12 02:25:24,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:24,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334332905] [2023-11-12 02:25:24,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:24,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:25,425 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 02:25:25,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:25,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334332905] [2023-11-12 02:25:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334332905] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689071148] [2023-11-12 02:25:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:25,429 INFO L87 Difference]: Start difference. First operand 1509 states and 2507 transitions. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:25:27,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:27,510 INFO L93 Difference]: Finished difference Result 4013 states and 6682 transitions. [2023-11-12 02:25:27,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:27,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-11-12 02:25:27,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:27,526 INFO L225 Difference]: With dead ends: 4013 [2023-11-12 02:25:27,526 INFO L226 Difference]: Without dead ends: 2700 [2023-11-12 02:25:27,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:27,530 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6540 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6540 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:27,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6540 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:25:27,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-12 02:25:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1510. [2023-11-12 02:25:27,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1510 states, 1509 states have (on average 1.662027833001988) internal successors, (2508), 1509 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states 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 02:25:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1510 states to 1510 states and 2508 transitions. [2023-11-12 02:25:27,584 INFO L78 Accepts]: Start accepts. Automaton has 1510 states and 2508 transitions. Word has length 190 [2023-11-12 02:25:27,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:27,584 INFO L495 AbstractCegarLoop]: Abstraction has 1510 states and 2508 transitions. [2023-11-12 02:25:27,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:25:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1510 states and 2508 transitions. [2023-11-12 02:25:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2023-11-12 02:25:27,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:27,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:27,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:25:27,589 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:27,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash 423277845, now seen corresponding path program 1 times [2023-11-12 02:25:27,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:27,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600154624] [2023-11-12 02:25:27,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:27,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:28,162 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 02:25:28,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:28,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600154624] [2023-11-12 02:25:28,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600154624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:28,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:28,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:28,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305692387] [2023-11-12 02:25:28,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:28,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:28,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:28,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:28,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:28,168 INFO L87 Difference]: Start difference. First operand 1510 states and 2508 transitions. Second operand has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:25:30,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:30,233 INFO L93 Difference]: Finished difference Result 4061 states and 6752 transitions. [2023-11-12 02:25:30,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:30,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 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 190 [2023-11-12 02:25:30,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:30,252 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:30,252 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:30,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:30,256 INFO L413 NwaCegarLoop]: 1926 mSDtfsCounter, 6558 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6558 SdHoareTripleChecker+Valid, 7799 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:30,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6558 Valid, 7799 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-12 02:25:30,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1515. [2023-11-12 02:25:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.6611624834874505) internal successors, (2515), 1514 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 02:25:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 2515 transitions. [2023-11-12 02:25:30,302 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 2515 transitions. Word has length 190 [2023-11-12 02:25:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:30,302 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 2515 transitions. [2023-11-12 02:25:30,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.666666666666668) internal successors, (190), 6 states have internal predecessors, (190), 0 states have call successors, (0), 0 states 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 02:25:30,303 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 2515 transitions. [2023-11-12 02:25:30,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-12 02:25:30,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:30,305 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:30,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:25:30,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:30,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:30,306 INFO L85 PathProgramCache]: Analyzing trace with hash -267284671, now seen corresponding path program 1 times [2023-11-12 02:25:30,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:30,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926834314] [2023-11-12 02:25:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:30,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:30,977 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 02:25:30,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:30,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926834314] [2023-11-12 02:25:30,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926834314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:30,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:30,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:30,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743855822] [2023-11-12 02:25:30,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:30,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:30,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:30,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:30,981 INFO L87 Difference]: Start difference. First operand 1515 states and 2515 transitions. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 02:25:32,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:32,737 INFO L93 Difference]: Finished difference Result 4013 states and 6680 transitions. [2023-11-12 02:25:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:32,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-11-12 02:25:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:32,752 INFO L225 Difference]: With dead ends: 4013 [2023-11-12 02:25:32,752 INFO L226 Difference]: Without dead ends: 2700 [2023-11-12 02:25:32,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:32,755 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6531 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6531 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:32,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6531 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-12 02:25:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-12 02:25:32,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1516. [2023-11-12 02:25:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1516 states, 1515 states have (on average 1.6607260726072608) internal successors, (2516), 1515 states have internal predecessors, (2516), 0 states have call successors, (0), 0 states 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 02:25:32,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1516 states to 1516 states and 2516 transitions. [2023-11-12 02:25:32,798 INFO L78 Accepts]: Start accepts. Automaton has 1516 states and 2516 transitions. Word has length 191 [2023-11-12 02:25:32,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:32,798 INFO L495 AbstractCegarLoop]: Abstraction has 1516 states and 2516 transitions. [2023-11-12 02:25:32,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 02:25:32,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1516 states and 2516 transitions. [2023-11-12 02:25:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2023-11-12 02:25:32,801 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:32,801 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:32,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:25:32,802 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:32,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:32,802 INFO L85 PathProgramCache]: Analyzing trace with hash -748364929, now seen corresponding path program 1 times [2023-11-12 02:25:32,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778868454] [2023-11-12 02:25:32,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:32,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:33,234 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 02:25:33,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:33,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778868454] [2023-11-12 02:25:33,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778868454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:33,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135313615] [2023-11-12 02:25:33,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:33,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:33,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:33,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:33,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:33,238 INFO L87 Difference]: Start difference. First operand 1516 states and 2516 transitions. Second operand has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 02:25:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:35,159 INFO L93 Difference]: Finished difference Result 4061 states and 6750 transitions. [2023-11-12 02:25:35,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:25:35,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 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 191 [2023-11-12 02:25:35,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:35,169 INFO L225 Difference]: With dead ends: 4061 [2023-11-12 02:25:35,169 INFO L226 Difference]: Without dead ends: 2748 [2023-11-12 02:25:35,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:25:35,173 INFO L413 NwaCegarLoop]: 1928 mSDtfsCounter, 6549 mSDsluCounter, 5873 mSDsCounter, 0 mSdLazyCounter, 1585 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6549 SdHoareTripleChecker+Valid, 7801 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:35,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6549 Valid, 7801 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1585 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-12 02:25:35,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2023-11-12 02:25:35,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 1521. [2023-11-12 02:25:35,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1520 states have (on average 1.6598684210526315) internal successors, (2523), 1520 states have internal predecessors, (2523), 0 states have call successors, (0), 0 states 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 02:25:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2523 transitions. [2023-11-12 02:25:35,218 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2523 transitions. Word has length 191 [2023-11-12 02:25:35,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:35,218 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2523 transitions. [2023-11-12 02:25:35,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.833333333333332) internal successors, (191), 6 states have internal predecessors, (191), 0 states have call successors, (0), 0 states 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 02:25:35,219 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2523 transitions. [2023-11-12 02:25:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-12 02:25:35,221 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:35,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:35,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:25:35,222 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:35,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:35,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1406036661, now seen corresponding path program 1 times [2023-11-12 02:25:35,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:35,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242948577] [2023-11-12 02:25:35,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:35,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:35,887 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 02:25:35,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:35,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242948577] [2023-11-12 02:25:35,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242948577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:35,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:35,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:25:35,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16875299] [2023-11-12 02:25:35,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:25:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:35,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:25:35,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:25:35,890 INFO L87 Difference]: Start difference. First operand 1521 states and 2523 transitions. Second operand has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 02:25:37,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:25:37,733 INFO L93 Difference]: Finished difference Result 4013 states and 6678 transitions. [2023-11-12 02:25:37,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:25:37,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2023-11-12 02:25:37,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:25:37,745 INFO L225 Difference]: With dead ends: 4013 [2023-11-12 02:25:37,745 INFO L226 Difference]: Without dead ends: 2700 [2023-11-12 02:25:37,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:25:37,748 INFO L413 NwaCegarLoop]: 1776 mSDtfsCounter, 6522 mSDsluCounter, 3544 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6522 SdHoareTripleChecker+Valid, 5320 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:25:37,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6522 Valid, 5320 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-12 02:25:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2700 states. [2023-11-12 02:25:37,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2700 to 1522. [2023-11-12 02:25:37,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1521 states have (on average 1.6594345825115056) internal successors, (2524), 1521 states have internal predecessors, (2524), 0 states have call successors, (0), 0 states 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 02:25:37,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2524 transitions. [2023-11-12 02:25:37,792 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2524 transitions. Word has length 192 [2023-11-12 02:25:37,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:25:37,792 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2524 transitions. [2023-11-12 02:25:37,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.4) internal successors, (192), 5 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 02:25:37,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2524 transitions. [2023-11-12 02:25:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2023-11-12 02:25:37,795 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:25:37,795 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:25:37,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:25:37,795 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:25:37,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:25:37,796 INFO L85 PathProgramCache]: Analyzing trace with hash 522236041, now seen corresponding path program 1 times [2023-11-12 02:25:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:25:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270328311] [2023-11-12 02:25:37,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:25:37,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:25:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:25:38,263 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 02:25:38,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:25:38,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270328311] [2023-11-12 02:25:38,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270328311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:25:38,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:25:38,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:25:38,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658575246] [2023-11-12 02:25:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:25:38,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:25:38,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:25:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:25:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:25:38,265 INFO L87 Difference]: Start difference. First operand 1522 states and 2524 transitions. Second operand has 6 states, 6 states have (on average 32.0) internal successors, (192), 6 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)