./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/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_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bed48b88780a9161d07013a5b96d251b4e7830e1504dd411292edd1687355823 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:26:47,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:26:47,181 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:26:47,187 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:26:47,188 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:26:47,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:26:47,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:26:47,215 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:26:47,216 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:26:47,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:26:47,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:26:47,218 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:26:47,219 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:26:47,219 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:26:47,220 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:26:47,220 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:26:47,221 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:26:47,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:26:47,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:26:47,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:26:47,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:26:47,224 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:26:47,225 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:26:47,225 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:26:47,226 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:26:47,226 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:26:47,227 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:26:47,227 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:26:47,228 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:47,229 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:26:47,229 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:26:47,230 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:26:47,230 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:26:47,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:26:47,231 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:26:47,242 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:26:47,242 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:26:47,243 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:26:47,243 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:26:47,244 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_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bed48b88780a9161d07013a5b96d251b4e7830e1504dd411292edd1687355823 [2023-11-12 02:26:47,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:26:47,605 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:26:47,607 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:26:47,609 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:26:47,609 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:26:47,611 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-11-12 02:26:50,752 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:26:51,023 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:26:51,023 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-11-12 02:26:51,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/data/283482de0/e309f00e2f1c40c99baa9a96af3b9636/FLAG13ddfc31f [2023-11-12 02:26:51,070 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/data/283482de0/e309f00e2f1c40c99baa9a96af3b9636 [2023-11-12 02:26:51,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:26:51,080 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:26:51,082 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:51,082 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:26:51,088 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:26:51,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315208c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51, skipping insertion in model container [2023-11-12 02:26:51,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,165 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:26:51,566 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_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c[28194,28207] [2023-11-12 02:26:51,580 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:51,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:26:51,725 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_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/sv-benchmarks/c/seq-mthreaded/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c[28194,28207] [2023-11-12 02:26:51,740 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:26:51,765 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:26:51,765 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51 WrapperNode [2023-11-12 02:26:51,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:26:51,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:51,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:26:51,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:26:51,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,896 INFO L138 Inliner]: procedures = 23, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 942 [2023-11-12 02:26:51,896 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:26:51,897 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:26:51,897 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:26:51,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:26:51,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,912 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,950 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:51,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:52,002 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:52,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:26:52,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:26:52,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:26:52,028 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:26:52,029 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (1/1) ... [2023-11-12 02:26:52,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:26:52,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:26:52,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:26:52,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8884ba8-24b5-4a7c-8c6d-1ebe98a86975/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:26:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:26:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:26:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:26:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:26:52,383 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:26:52,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:26:53,428 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:26:53,448 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:26:53,448 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:26:53,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:53 BoogieIcfgContainer [2023-11-12 02:26:53,452 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:26:53,456 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:26:53,456 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:26:53,459 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:26:53,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:26:51" (1/3) ... [2023-11-12 02:26:53,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62839678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:53, skipping insertion in model container [2023-11-12 02:26:53,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:26:51" (2/3) ... [2023-11-12 02:26:53,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62839678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:26:53, skipping insertion in model container [2023-11-12 02:26:53,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:26:53" (3/3) ... [2023-11-12 02:26:53,465 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c [2023-11-12 02:26:53,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:26:53,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:26:53,553 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:26:53,563 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;@2d2630e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:26:53,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:26:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 0 states have call successors, (0), 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 02:26:53,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:26:53,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:53,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:53,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:53,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:53,592 INFO L85 PathProgramCache]: Analyzing trace with hash -875885192, now seen corresponding path program 1 times [2023-11-12 02:26:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:53,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971768994] [2023-11-12 02:26:53,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:53,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:54,123 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 02:26:54,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:54,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971768994] [2023-11-12 02:26:54,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971768994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:54,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:54,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:26:54,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661230226] [2023-11-12 02:26:54,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:26:54,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:54,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:26:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:26:54,166 INFO L87 Difference]: Start difference. First operand has 280 states, 278 states have (on average 1.8345323741007193) internal successors, (510), 279 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:54,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:54,207 INFO L93 Difference]: Finished difference Result 369 states and 666 transitions. [2023-11-12 02:26:54,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:26:54,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:26:54,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:54,223 INFO L225 Difference]: With dead ends: 369 [2023-11-12 02:26:54,224 INFO L226 Difference]: Without dead ends: 276 [2023-11-12 02:26:54,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:26:54,230 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:54,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-12 02:26:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-11-12 02:26:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.829090909090909) internal successors, (503), 275 states have internal predecessors, (503), 0 states have call successors, (0), 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 02:26:54,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 503 transitions. [2023-11-12 02:26:54,288 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 503 transitions. Word has length 77 [2023-11-12 02:26:54,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:54,289 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 503 transitions. [2023-11-12 02:26:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 503 transitions. [2023-11-12 02:26:54,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-12 02:26:54,295 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:54,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:26:54,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:26:54,296 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:54,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:54,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1009898698, now seen corresponding path program 1 times [2023-11-12 02:26:54,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:54,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302683642] [2023-11-12 02:26:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:54,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:54,691 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 02:26:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:54,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302683642] [2023-11-12 02:26:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302683642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:54,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:26:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087459467] [2023-11-12 02:26:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:54,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:26:54,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:54,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:26:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:26:54,697 INFO L87 Difference]: Start difference. First operand 276 states and 503 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:54,869 INFO L93 Difference]: Finished difference Result 364 states and 656 transitions. [2023-11-12 02:26:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:26:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2023-11-12 02:26:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:54,875 INFO L225 Difference]: With dead ends: 364 [2023-11-12 02:26:54,875 INFO L226 Difference]: Without dead ends: 276 [2023-11-12 02:26:54,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:26:54,884 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 2 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:54,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1957 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:26:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-12 02:26:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-11-12 02:26:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.6763636363636363) internal successors, (461), 275 states have internal predecessors, (461), 0 states have call successors, (0), 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 02:26:54,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 461 transitions. [2023-11-12 02:26:54,920 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 461 transitions. Word has length 77 [2023-11-12 02:26:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:54,920 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 461 transitions. [2023-11-12 02:26:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:26:54,921 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 461 transitions. [2023-11-12 02:26:54,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 02:26:54,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:54,927 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] [2023-11-12 02:26:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:26:54,927 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:54,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:54,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1489902654, now seen corresponding path program 1 times [2023-11-12 02:26:54,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:54,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801592025] [2023-11-12 02:26:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:54,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:55,255 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 02:26:55,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:55,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801592025] [2023-11-12 02:26:55,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801592025] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:55,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:55,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:55,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795034936] [2023-11-12 02:26:55,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:55,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:55,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:55,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:55,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,259 INFO L87 Difference]: Start difference. First operand 276 states and 461 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 02:26:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:55,320 INFO L93 Difference]: Finished difference Result 433 states and 738 transitions. [2023-11-12 02:26:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 118 [2023-11-12 02:26:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:55,327 INFO L225 Difference]: With dead ends: 433 [2023-11-12 02:26:55,328 INFO L226 Difference]: Without dead ends: 349 [2023-11-12 02:26:55,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,341 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 120 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:55,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 977 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:55,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-12 02:26:55,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2023-11-12 02:26:55,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 1.6849710982658959) internal successors, (583), 346 states have internal predecessors, (583), 0 states have call successors, (0), 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 02:26:55,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 583 transitions. [2023-11-12 02:26:55,386 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 583 transitions. Word has length 118 [2023-11-12 02:26:55,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:55,392 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 583 transitions. [2023-11-12 02:26:55,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 02:26:55,392 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 583 transitions. [2023-11-12 02:26:55,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-12 02:26:55,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:55,408 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] [2023-11-12 02:26:55,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:26:55,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:55,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:55,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1238623676, now seen corresponding path program 1 times [2023-11-12 02:26:55,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:55,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369592626] [2023-11-12 02:26:55,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:55,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:55,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:55,558 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 02:26:55,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:55,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369592626] [2023-11-12 02:26:55,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369592626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:55,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:55,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:55,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775625543] [2023-11-12 02:26:55,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:55,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:55,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:55,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,562 INFO L87 Difference]: Start difference. First operand 347 states and 583 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:26:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:55,593 INFO L93 Difference]: Finished difference Result 503 states and 858 transitions. [2023-11-12 02:26:55,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:55,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-11-12 02:26:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:55,598 INFO L225 Difference]: With dead ends: 503 [2023-11-12 02:26:55,598 INFO L226 Difference]: Without dead ends: 419 [2023-11-12 02:26:55,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,600 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 129 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:55,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1011 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:55,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2023-11-12 02:26:55,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 417. [2023-11-12 02:26:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 1.6971153846153846) internal successors, (706), 416 states have internal predecessors, (706), 0 states have call successors, (0), 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 02:26:55,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 706 transitions. [2023-11-12 02:26:55,617 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 706 transitions. Word has length 121 [2023-11-12 02:26:55,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:55,618 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 706 transitions. [2023-11-12 02:26:55,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:26:55,619 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 706 transitions. [2023-11-12 02:26:55,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-12 02:26:55,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:55,621 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] [2023-11-12 02:26:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:26:55,621 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:55,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 942583131, now seen corresponding path program 1 times [2023-11-12 02:26:55,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:55,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330842298] [2023-11-12 02:26:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:55,788 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 02:26:55,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:55,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330842298] [2023-11-12 02:26:55,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330842298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:55,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:55,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390101381] [2023-11-12 02:26:55,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:55,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:55,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:55,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:55,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,793 INFO L87 Difference]: Start difference. First operand 417 states and 706 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:26:55,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:55,830 INFO L93 Difference]: Finished difference Result 836 states and 1439 transitions. [2023-11-12 02:26:55,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:55,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 121 [2023-11-12 02:26:55,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:55,836 INFO L225 Difference]: With dead ends: 836 [2023-11-12 02:26:55,836 INFO L226 Difference]: Without dead ends: 613 [2023-11-12 02:26:55,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:55,839 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 121 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:55,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 988 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:55,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2023-11-12 02:26:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 611. [2023-11-12 02:26:55,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.7098360655737705) internal successors, (1043), 610 states have internal predecessors, (1043), 0 states have call successors, (0), 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 02:26:55,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 1043 transitions. [2023-11-12 02:26:55,872 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 1043 transitions. Word has length 121 [2023-11-12 02:26:55,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:55,872 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 1043 transitions. [2023-11-12 02:26:55,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 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 02:26:55,873 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 1043 transitions. [2023-11-12 02:26:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:26:55,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:55,880 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] [2023-11-12 02:26:55,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:26:55,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:55,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2091470231, now seen corresponding path program 1 times [2023-11-12 02:26:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:55,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805873618] [2023-11-12 02:26:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:56,047 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 02:26:56,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:56,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805873618] [2023-11-12 02:26:56,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805873618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:56,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:56,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:56,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664848575] [2023-11-12 02:26:56,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:56,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:56,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:56,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:56,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,051 INFO L87 Difference]: Start difference. First operand 611 states and 1043 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 02:26:56,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:56,090 INFO L93 Difference]: Finished difference Result 1022 states and 1760 transitions. [2023-11-12 02:26:56,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:56,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:26:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:56,097 INFO L225 Difference]: With dead ends: 1022 [2023-11-12 02:26:56,097 INFO L226 Difference]: Without dead ends: 799 [2023-11-12 02:26:56,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,101 INFO L413 NwaCegarLoop]: 561 mSDtfsCounter, 122 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:56,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1001 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:56,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2023-11-12 02:26:56,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 797. [2023-11-12 02:26:56,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 1.7123115577889447) internal successors, (1363), 796 states have internal predecessors, (1363), 0 states have call successors, (0), 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 02:26:56,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1363 transitions. [2023-11-12 02:26:56,138 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1363 transitions. Word has length 124 [2023-11-12 02:26:56,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:56,140 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1363 transitions. [2023-11-12 02:26:56,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 02:26:56,140 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1363 transitions. [2023-11-12 02:26:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:26:56,145 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:56,145 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] [2023-11-12 02:26:56,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:26:56,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:56,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:56,147 INFO L85 PathProgramCache]: Analyzing trace with hash -2013778626, now seen corresponding path program 1 times [2023-11-12 02:26:56,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:56,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175985580] [2023-11-12 02:26:56,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:56,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:56,342 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 02:26:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175985580] [2023-11-12 02:26:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175985580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:56,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459498389] [2023-11-12 02:26:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:56,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:56,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,345 INFO L87 Difference]: Start difference. First operand 797 states and 1363 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 02:26:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:56,406 INFO L93 Difference]: Finished difference Result 1908 states and 3288 transitions. [2023-11-12 02:26:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2023-11-12 02:26:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:56,416 INFO L225 Difference]: With dead ends: 1908 [2023-11-12 02:26:56,416 INFO L226 Difference]: Without dead ends: 1312 [2023-11-12 02:26:56,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,418 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 114 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:56,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 979 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-11-12 02:26:56,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-11-12 02:26:56,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1309 states have (on average 1.7104660045836517) internal successors, (2239), 1309 states have internal predecessors, (2239), 0 states have call successors, (0), 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 02:26:56,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2239 transitions. [2023-11-12 02:26:56,497 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2239 transitions. Word has length 124 [2023-11-12 02:26:56,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:56,498 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2239 transitions. [2023-11-12 02:26:56,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 02:26:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2239 transitions. [2023-11-12 02:26:56,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 02:26:56,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:56,501 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] [2023-11-12 02:26:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:26:56,501 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:56,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1950081272, now seen corresponding path program 1 times [2023-11-12 02:26:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069069740] [2023-11-12 02:26:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:56,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:56,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:56,618 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 02:26:56,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:56,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069069740] [2023-11-12 02:26:56,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069069740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:56,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:56,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:56,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454837698] [2023-11-12 02:26:56,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:56,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:56,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:56,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:56,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,622 INFO L87 Difference]: Start difference. First operand 1310 states and 2239 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 02:26:56,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:56,690 INFO L93 Difference]: Finished difference Result 2383 states and 4094 transitions. [2023-11-12 02:26:56,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:56,690 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-11-12 02:26:56,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:56,703 INFO L225 Difference]: With dead ends: 2383 [2023-11-12 02:26:56,703 INFO L226 Difference]: Without dead ends: 1787 [2023-11-12 02:26:56,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,706 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 115 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:56,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 991 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:56,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2023-11-12 02:26:56,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1785. [2023-11-12 02:26:56,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1785 states, 1784 states have (on average 1.7062780269058295) internal successors, (3044), 1784 states have internal predecessors, (3044), 0 states have call successors, (0), 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 02:26:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1785 states to 1785 states and 3044 transitions. [2023-11-12 02:26:56,778 INFO L78 Accepts]: Start accepts. Automaton has 1785 states and 3044 transitions. Word has length 127 [2023-11-12 02:26:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 1785 states and 3044 transitions. [2023-11-12 02:26:56,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 02:26:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 1785 states and 3044 transitions. [2023-11-12 02:26:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2023-11-12 02:26:56,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:56,780 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] [2023-11-12 02:26:56,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:26:56,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:56,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash 114997535, now seen corresponding path program 1 times [2023-11-12 02:26:56,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:56,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050290201] [2023-11-12 02:26:56,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:56,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:56,930 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 02:26:56,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:56,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050290201] [2023-11-12 02:26:56,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050290201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:56,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:56,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:56,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105361500] [2023-11-12 02:26:56,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:56,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:56,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:56,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:56,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:56,934 INFO L87 Difference]: Start difference. First operand 1785 states and 3044 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 02:26:57,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:57,015 INFO L93 Difference]: Finished difference Result 4696 states and 8005 transitions. [2023-11-12 02:26:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:57,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2023-11-12 02:26:57,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:57,037 INFO L225 Difference]: With dead ends: 4696 [2023-11-12 02:26:57,038 INFO L226 Difference]: Without dead ends: 3119 [2023-11-12 02:26:57,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:57,043 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 107 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:57,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 970 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:57,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2023-11-12 02:26:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3117. [2023-11-12 02:26:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3117 states, 3116 states have (on average 1.6903080872913991) internal successors, (5267), 3116 states have internal predecessors, (5267), 0 states have call successors, (0), 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 02:26:57,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3117 states to 3117 states and 5267 transitions. [2023-11-12 02:26:57,209 INFO L78 Accepts]: Start accepts. Automaton has 3117 states and 5267 transitions. Word has length 127 [2023-11-12 02:26:57,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:57,211 INFO L495 AbstractCegarLoop]: Abstraction has 3117 states and 5267 transitions. [2023-11-12 02:26:57,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 02:26:57,211 INFO L276 IsEmpty]: Start isEmpty. Operand 3117 states and 5267 transitions. [2023-11-12 02:26:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-12 02:26:57,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:57,213 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] [2023-11-12 02:26:57,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:26:57,213 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:57,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:57,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1099622423, now seen corresponding path program 1 times [2023-11-12 02:26:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360509079] [2023-11-12 02:26:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:57,359 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 02:26:57,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360509079] [2023-11-12 02:26:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360509079] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:57,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:26:57,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879056172] [2023-11-12 02:26:57,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:57,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:26:57,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:57,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:26:57,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:57,362 INFO L87 Difference]: Start difference. First operand 3117 states and 5267 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 02:26:57,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:57,454 INFO L93 Difference]: Finished difference Result 5900 states and 9996 transitions. [2023-11-12 02:26:57,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:26:57,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-11-12 02:26:57,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:57,486 INFO L225 Difference]: With dead ends: 5900 [2023-11-12 02:26:57,486 INFO L226 Difference]: Without dead ends: 4323 [2023-11-12 02:26:57,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:26:57,492 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 108 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:57,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 981 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:26:57,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4323 states. [2023-11-12 02:26:57,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4323 to 4321. [2023-11-12 02:26:57,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4321 states, 4320 states have (on average 1.679861111111111) internal successors, (7257), 4320 states have internal predecessors, (7257), 0 states have call successors, (0), 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 02:26:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4321 states to 4321 states and 7257 transitions. [2023-11-12 02:26:57,703 INFO L78 Accepts]: Start accepts. Automaton has 4321 states and 7257 transitions. Word has length 130 [2023-11-12 02:26:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:57,704 INFO L495 AbstractCegarLoop]: Abstraction has 4321 states and 7257 transitions. [2023-11-12 02:26:57,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 0 states have call successors, (0), 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 02:26:57,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4321 states and 7257 transitions. [2023-11-12 02:26:57,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-11-12 02:26:57,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:57,707 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] [2023-11-12 02:26:57,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:26:57,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:57,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:57,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1139060542, now seen corresponding path program 1 times [2023-11-12 02:26:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:57,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812233941] [2023-11-12 02:26:57,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:57,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:58,021 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 02:26:58,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:58,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812233941] [2023-11-12 02:26:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812233941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:58,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:26:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015335472] [2023-11-12 02:26:58,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:26:58,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:26:58,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:26:58,025 INFO L87 Difference]: Start difference. First operand 4321 states and 7257 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 02:26:58,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:26:58,774 INFO L93 Difference]: Finished difference Result 27701 states and 47018 transitions. [2023-11-12 02:26:58,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:26:58,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 130 [2023-11-12 02:26:58,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:26:58,893 INFO L225 Difference]: With dead ends: 27701 [2023-11-12 02:26:58,893 INFO L226 Difference]: Without dead ends: 23595 [2023-11-12 02:26:58,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:26:58,903 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1656 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:26:58,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2764 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:26:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23595 states. [2023-11-12 02:26:59,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23595 to 8277. [2023-11-12 02:26:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8277 states, 8276 states have (on average 1.6718221362977284) internal successors, (13836), 8276 states have internal predecessors, (13836), 0 states have call successors, (0), 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 02:26:59,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8277 states to 8277 states and 13836 transitions. [2023-11-12 02:26:59,455 INFO L78 Accepts]: Start accepts. Automaton has 8277 states and 13836 transitions. Word has length 130 [2023-11-12 02:26:59,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:26:59,455 INFO L495 AbstractCegarLoop]: Abstraction has 8277 states and 13836 transitions. [2023-11-12 02:26:59,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 0 states have call successors, (0), 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 02:26:59,456 INFO L276 IsEmpty]: Start isEmpty. Operand 8277 states and 13836 transitions. [2023-11-12 02:26:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-12 02:26:59,458 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:26:59,458 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] [2023-11-12 02:26:59,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:26:59,458 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:26:59,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:26:59,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1143468315, now seen corresponding path program 1 times [2023-11-12 02:26:59,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:26:59,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970365249] [2023-11-12 02:26:59,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:26:59,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:26:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:26:59,622 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 02:26:59,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:26:59,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970365249] [2023-11-12 02:26:59,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970365249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:26:59,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:26:59,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:26:59,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996334303] [2023-11-12 02:26:59,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:26:59,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:26:59,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:26:59,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:26:59,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:26:59,624 INFO L87 Difference]: Start difference. First operand 8277 states and 13836 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 02:27:00,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:00,155 INFO L93 Difference]: Finished difference Result 27383 states and 46124 transitions. [2023-11-12 02:27:00,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:00,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 131 [2023-11-12 02:27:00,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:00,200 INFO L225 Difference]: With dead ends: 27383 [2023-11-12 02:27:00,200 INFO L226 Difference]: Without dead ends: 19321 [2023-11-12 02:27:00,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:00,212 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 423 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:00,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 1350 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19321 states. [2023-11-12 02:27:00,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19321 to 13744. [2023-11-12 02:27:00,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13744 states, 13743 states have (on average 1.6712508185985593) internal successors, (22968), 13743 states have internal predecessors, (22968), 0 states have call successors, (0), 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 02:27:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13744 states to 13744 states and 22968 transitions. [2023-11-12 02:27:00,881 INFO L78 Accepts]: Start accepts. Automaton has 13744 states and 22968 transitions. Word has length 131 [2023-11-12 02:27:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:00,882 INFO L495 AbstractCegarLoop]: Abstraction has 13744 states and 22968 transitions. [2023-11-12 02:27:00,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 0 states have call successors, (0), 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 02:27:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13744 states and 22968 transitions. [2023-11-12 02:27:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-12 02:27:00,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:00,884 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] [2023-11-12 02:27:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:27:00,885 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:00,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:00,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1281585493, now seen corresponding path program 1 times [2023-11-12 02:27:00,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:00,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321207211] [2023-11-12 02:27:00,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:00,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:01,175 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 02:27:01,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:01,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321207211] [2023-11-12 02:27:01,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321207211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:01,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:01,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:27:01,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994572320] [2023-11-12 02:27:01,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:01,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:01,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:01,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:01,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:01,179 INFO L87 Difference]: Start difference. First operand 13744 states and 22968 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 02:27:01,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:01,921 INFO L93 Difference]: Finished difference Result 45169 states and 75660 transitions. [2023-11-12 02:27:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:01,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 132 [2023-11-12 02:27:01,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:01,997 INFO L225 Difference]: With dead ends: 45169 [2023-11-12 02:27:01,997 INFO L226 Difference]: Without dead ends: 31640 [2023-11-12 02:27:02,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:02,014 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 421 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:02,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 1453 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:02,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31640 states. [2023-11-12 02:27:02,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31640 to 22603. [2023-11-12 02:27:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22603 states, 22602 states have (on average 1.662065303955402) internal successors, (37566), 22602 states have internal predecessors, (37566), 0 states have call successors, (0), 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 02:27:02,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22603 states to 22603 states and 37566 transitions. [2023-11-12 02:27:02,888 INFO L78 Accepts]: Start accepts. Automaton has 22603 states and 37566 transitions. Word has length 132 [2023-11-12 02:27:02,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:02,889 INFO L495 AbstractCegarLoop]: Abstraction has 22603 states and 37566 transitions. [2023-11-12 02:27:02,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 0 states have call successors, (0), 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 02:27:02,889 INFO L276 IsEmpty]: Start isEmpty. Operand 22603 states and 37566 transitions. [2023-11-12 02:27:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-12 02:27:02,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:02,891 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] [2023-11-12 02:27:02,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:27:02,892 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:02,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:02,892 INFO L85 PathProgramCache]: Analyzing trace with hash -682153444, now seen corresponding path program 1 times [2023-11-12 02:27:02,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:02,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646934985] [2023-11-12 02:27:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:02,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:03,173 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 02:27:03,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:03,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646934985] [2023-11-12 02:27:03,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646934985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:03,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:03,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:27:03,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874367094] [2023-11-12 02:27:03,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:03,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:03,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:03,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:03,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:03,177 INFO L87 Difference]: Start difference. First operand 22603 states and 37566 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 02:27:04,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:04,417 INFO L93 Difference]: Finished difference Result 74067 states and 123372 transitions. [2023-11-12 02:27:04,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:04,418 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 133 [2023-11-12 02:27:04,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:04,549 INFO L225 Difference]: With dead ends: 74067 [2023-11-12 02:27:04,549 INFO L226 Difference]: Without dead ends: 51679 [2023-11-12 02:27:04,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:04,581 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 419 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:04,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1455 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:04,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51679 states. [2023-11-12 02:27:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51679 to 36998. [2023-11-12 02:27:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36998 states, 36997 states have (on average 1.6528907749276969) internal successors, (61152), 36997 states have internal predecessors, (61152), 0 states have call successors, (0), 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 02:27:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36998 states to 36998 states and 61152 transitions. [2023-11-12 02:27:06,133 INFO L78 Accepts]: Start accepts. Automaton has 36998 states and 61152 transitions. Word has length 133 [2023-11-12 02:27:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:06,133 INFO L495 AbstractCegarLoop]: Abstraction has 36998 states and 61152 transitions. [2023-11-12 02:27:06,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 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 02:27:06,134 INFO L276 IsEmpty]: Start isEmpty. Operand 36998 states and 61152 transitions. [2023-11-12 02:27:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-12 02:27:06,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:06,136 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] [2023-11-12 02:27:06,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:27:06,137 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:06,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:06,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1259514004, now seen corresponding path program 1 times [2023-11-12 02:27:06,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:06,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544049691] [2023-11-12 02:27:06,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:06,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:06,372 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 02:27:06,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:06,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544049691] [2023-11-12 02:27:06,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544049691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:06,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:06,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:27:06,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939795997] [2023-11-12 02:27:06,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:27:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:06,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:27:06,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:27:06,376 INFO L87 Difference]: Start difference. First operand 36998 states and 61152 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 02:27:08,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:08,624 INFO L93 Difference]: Finished difference Result 119893 states and 198604 transitions. [2023-11-12 02:27:08,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:27:08,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 134 [2023-11-12 02:27:08,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:08,874 INFO L225 Difference]: With dead ends: 119893 [2023-11-12 02:27:08,874 INFO L226 Difference]: Without dead ends: 83110 [2023-11-12 02:27:08,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:27:08,939 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 417 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 1463 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:08,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 1463 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83110 states. [2023-11-12 02:27:11,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83110 to 59829. [2023-11-12 02:27:11,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6440128367988234) internal successors, (98358), 59828 states have internal predecessors, (98358), 0 states have call successors, (0), 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 02:27:11,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 98358 transitions. [2023-11-12 02:27:11,432 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 98358 transitions. Word has length 134 [2023-11-12 02:27:11,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:11,433 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 98358 transitions. [2023-11-12 02:27:11,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 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 02:27:11,433 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 98358 transitions. [2023-11-12 02:27:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-12 02:27:11,435 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:11,435 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] [2023-11-12 02:27:11,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:27:11,436 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:11,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:11,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1428334268, now seen corresponding path program 1 times [2023-11-12 02:27:11,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:11,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766838512] [2023-11-12 02:27:11,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:11,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:11,884 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 02:27:11,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:11,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766838512] [2023-11-12 02:27:11,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766838512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:11,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:11,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:27:11,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320061440] [2023-11-12 02:27:11,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:11,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:11,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:11,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:11,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:11,889 INFO L87 Difference]: Start difference. First operand 59829 states and 98358 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 02:27:13,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:13,655 INFO L93 Difference]: Finished difference Result 119445 states and 196373 transitions. [2023-11-12 02:27:13,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:13,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 136 [2023-11-12 02:27:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:13,896 INFO L225 Difference]: With dead ends: 119445 [2023-11-12 02:27:13,896 INFO L226 Difference]: Without dead ends: 59831 [2023-11-12 02:27:13,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:13,936 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 217 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:13,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1729 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59831 states. [2023-11-12 02:27:15,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59831 to 59829. [2023-11-12 02:27:15,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59829 states, 59828 states have (on average 1.6335662231730963) internal successors, (97733), 59828 states have internal predecessors, (97733), 0 states have call successors, (0), 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 02:27:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59829 states to 59829 states and 97733 transitions. [2023-11-12 02:27:15,795 INFO L78 Accepts]: Start accepts. Automaton has 59829 states and 97733 transitions. Word has length 136 [2023-11-12 02:27:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:15,796 INFO L495 AbstractCegarLoop]: Abstraction has 59829 states and 97733 transitions. [2023-11-12 02:27:15,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 0 states have call successors, (0), 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 02:27:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 59829 states and 97733 transitions. [2023-11-12 02:27:15,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-12 02:27:15,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:15,798 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] [2023-11-12 02:27:15,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:27:15,799 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:15,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:15,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1982359839, now seen corresponding path program 1 times [2023-11-12 02:27:15,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:15,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44517589] [2023-11-12 02:27:15,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:15,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:15,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:16,503 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 02:27:16,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:16,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44517589] [2023-11-12 02:27:16,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44517589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:16,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:16,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:27:16,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962024580] [2023-11-12 02:27:16,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:16,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:27:16,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:27:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:27:16,507 INFO L87 Difference]: Start difference. First operand 59829 states and 97733 transitions. Second operand has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:27:18,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:18,648 INFO L93 Difference]: Finished difference Result 174963 states and 286257 transitions. [2023-11-12 02:27:18,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:27:18,648 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2023-11-12 02:27:18,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:18,845 INFO L225 Difference]: With dead ends: 174963 [2023-11-12 02:27:18,846 INFO L226 Difference]: Without dead ends: 115349 [2023-11-12 02:27:18,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:18,915 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 213 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:18,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1742 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115349 states. [2023-11-12 02:27:21,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115349 to 115347. [2023-11-12 02:27:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115347 states, 115346 states have (on average 1.6199087961437761) internal successors, (186850), 115346 states have internal predecessors, (186850), 0 states have call successors, (0), 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 02:27:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115347 states to 115347 states and 186850 transitions. [2023-11-12 02:27:22,109 INFO L78 Accepts]: Start accepts. Automaton has 115347 states and 186850 transitions. Word has length 139 [2023-11-12 02:27:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:22,110 INFO L495 AbstractCegarLoop]: Abstraction has 115347 states and 186850 transitions. [2023-11-12 02:27:22,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.166666666666668) internal successors, (139), 6 states have internal predecessors, (139), 0 states have call successors, (0), 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 02:27:22,111 INFO L276 IsEmpty]: Start isEmpty. Operand 115347 states and 186850 transitions. [2023-11-12 02:27:22,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2023-11-12 02:27:22,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:22,116 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] [2023-11-12 02:27:22,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:27:22,118 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:22,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash 892267437, now seen corresponding path program 1 times [2023-11-12 02:27:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305040527] [2023-11-12 02:27:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:22,763 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 02:27:22,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:22,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305040527] [2023-11-12 02:27:22,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305040527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:22,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:22,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:27:22,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289127933] [2023-11-12 02:27:22,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:22,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:27:22,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:22,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:27:22,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:27:22,766 INFO L87 Difference]: Start difference. First operand 115347 states and 186850 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:27:26,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:27:26,142 INFO L93 Difference]: Finished difference Result 192346 states and 312499 transitions. [2023-11-12 02:27:26,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:27:26,143 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 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 140 [2023-11-12 02:27:26,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:27:26,459 INFO L225 Difference]: With dead ends: 192346 [2023-11-12 02:27:26,459 INFO L226 Difference]: Without dead ends: 192344 [2023-11-12 02:27:26,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-12 02:27:26,513 INFO L413 NwaCegarLoop]: 500 mSDtfsCounter, 351 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 3244 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:27:26,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 3244 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:27:26,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192344 states. [2023-11-12 02:27:29,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192344 to 121155. [2023-11-12 02:27:29,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121155 states, 121154 states have (on average 1.5899681397229972) internal successors, (192631), 121154 states have internal predecessors, (192631), 0 states have call successors, (0), 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 02:27:30,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121155 states to 121155 states and 192631 transitions. [2023-11-12 02:27:30,545 INFO L78 Accepts]: Start accepts. Automaton has 121155 states and 192631 transitions. Word has length 140 [2023-11-12 02:27:30,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:27:30,545 INFO L495 AbstractCegarLoop]: Abstraction has 121155 states and 192631 transitions. [2023-11-12 02:27:30,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 8 states have internal predecessors, (140), 0 states have call successors, (0), 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 02:27:30,546 INFO L276 IsEmpty]: Start isEmpty. Operand 121155 states and 192631 transitions. [2023-11-12 02:27:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2023-11-12 02:27:30,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:27:30,574 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:27:30,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:27:30,574 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:27:30,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:27:30,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1970326679, now seen corresponding path program 1 times [2023-11-12 02:27:30,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:27:30,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978034683] [2023-11-12 02:27:30,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:27:30,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:27:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:27:30,809 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:27:30,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:27:30,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978034683] [2023-11-12 02:27:30,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978034683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:27:30,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:27:30,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:27:30,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711190293] [2023-11-12 02:27:30,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:27:30,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:27:30,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:27:30,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:27:30,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:27:30,814 INFO L87 Difference]: Start difference. First operand 121155 states and 192631 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)