./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/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_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/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_7857612a-a93e-4f73-a85b-7fde42ad0dcc/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 490983baa73e78cedc1fd82ca87154a66bb4f29bb6792de18df4399a6d4d2c54 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:36,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:36,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:16:36,599 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:36,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:36,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:36,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:36,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:36,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:36,639 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:36,640 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:36,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:36,641 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:36,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:36,643 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:36,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:36,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:36,646 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:36,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:36,647 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:36,648 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:36,649 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:36,650 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:36,650 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:36,651 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:36,652 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:36,653 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:36,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:36,654 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:36,655 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:36,655 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:36,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:36,656 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:36,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:36,657 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:36,657 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:36,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:36,658 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:36,673 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:36,673 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_7857612a-a93e-4f73-a85b-7fde42ad0dcc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 490983baa73e78cedc1fd82ca87154a66bb4f29bb6792de18df4399a6d4d2c54 [2023-11-12 02:16:36,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:37,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:37,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:37,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:37,065 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:37,066 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i [2023-11-12 02:16:40,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:40,895 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:40,896 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i [2023-11-12 02:16:40,905 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/data/286d9f822/0e0a8c2df93f47fe813e7294bc49ef65/FLAG32726d10f [2023-11-12 02:16:40,935 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/data/286d9f822/0e0a8c2df93f47fe813e7294bc49ef65 [2023-11-12 02:16:40,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:40,939 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:40,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:40,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:40,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:40,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:40" (1/1) ... [2023-11-12 02:16:40,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64685fd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:40, skipping insertion in model container [2023-11-12 02:16:40,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:40" (1/1) ... [2023-11-12 02:16:40,975 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:41,130 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_7857612a-a93e-4f73-a85b-7fde42ad0dcc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i[913,926] [2023-11-12 02:16:41,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:41,193 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:41,203 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_7857612a-a93e-4f73-a85b-7fde42ad0dcc/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_normal_file-56.i[913,926] [2023-11-12 02:16:41,238 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:41,254 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:41,255 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41 WrapperNode [2023-11-12 02:16:41,255 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:41,256 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:41,256 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:41,257 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:41,270 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,280 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,330 INFO L138 Inliner]: procedures = 26, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 144 [2023-11-12 02:16:41,330 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:41,331 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:41,331 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:41,332 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:41,341 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,351 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,351 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,367 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,371 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,373 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,378 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:41,379 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:41,379 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:41,379 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:41,380 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (1/1) ... [2023-11-12 02:16:41,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:41,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:41,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:41,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7857612a-a93e-4f73-a85b-7fde42ad0dcc/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:41,469 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 02:16:41,469 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 02:16:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:16:41,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:41,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:41,588 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:41,590 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:42,030 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:42,043 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:42,044 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:16:42,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:42 BoogieIcfgContainer [2023-11-12 02:16:42,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:42,048 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:42,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:42,055 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:42,055 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:40" (1/3) ... [2023-11-12 02:16:42,056 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae07816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:42, skipping insertion in model container [2023-11-12 02:16:42,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:41" (2/3) ... [2023-11-12 02:16:42,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae07816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:42, skipping insertion in model container [2023-11-12 02:16:42,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:42" (3/3) ... [2023-11-12 02:16:42,060 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_normal_file-56.i [2023-11-12 02:16:42,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:42,082 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:16:42,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:42,170 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;@45c2f682, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:42,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:16:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 46 states have internal predecessors, (64), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 02:16:42,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:16:42,197 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:42,198 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:42,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:42,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1306618152, now seen corresponding path program 1 times [2023-11-12 02:16:42,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:42,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873254585] [2023-11-12 02:16:42,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:42,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:16:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:16:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:16:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:16:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:16:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:16:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:16:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:16:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:16:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:16:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:16:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:16:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:16:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:16:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:16:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:16:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:16:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:16:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 02:16:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873254585] [2023-11-12 02:16:42,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873254585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:42,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:42,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:42,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452457344] [2023-11-12 02:16:42,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:42,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:42,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:42,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:42,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:42,948 INFO L87 Difference]: Start difference. First operand has 67 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 46 states have internal predecessors, (64), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:16:43,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:43,057 INFO L93 Difference]: Finished difference Result 152 states and 258 transitions. [2023-11-12 02:16:43,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:43,061 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-11-12 02:16:43,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:43,072 INFO L225 Difference]: With dead ends: 152 [2023-11-12 02:16:43,072 INFO L226 Difference]: Without dead ends: 88 [2023-11-12 02:16:43,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 02:16:43,080 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:43,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 164 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:16:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-12 02:16:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2023-11-12 02:16:43,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 54 states have (on average 1.4444444444444444) internal successors, (78), 54 states have internal predecessors, (78), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-12 02:16:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 116 transitions. [2023-11-12 02:16:43,151 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 116 transitions. Word has length 124 [2023-11-12 02:16:43,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:43,153 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 116 transitions. [2023-11-12 02:16:43,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:16:43,154 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 116 transitions. [2023-11-12 02:16:43,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:16:43,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:43,158 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:43,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:16:43,158 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:43,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:43,159 INFO L85 PathProgramCache]: Analyzing trace with hash -468389210, now seen corresponding path program 1 times [2023-11-12 02:16:43,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:43,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014858749] [2023-11-12 02:16:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:43,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:16:59,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:16:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:16:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:16:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:16:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:16:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:16:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:16:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:16:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:16:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:16:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:16:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:16:59,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:16:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:16:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:16:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:16:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:16:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:16:59,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:59,263 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 02:16:59,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:59,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014858749] [2023-11-12 02:16:59,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014858749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:59,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:59,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 02:16:59,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502237307] [2023-11-12 02:16:59,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:59,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:16:59,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:59,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:16:59,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:16:59,269 INFO L87 Difference]: Start difference. First operand 75 states and 116 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:01,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:01,299 INFO L93 Difference]: Finished difference Result 345 states and 516 transitions. [2023-11-12 02:17:01,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:17:01,300 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-11-12 02:17:01,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:01,305 INFO L225 Difference]: With dead ends: 345 [2023-11-12 02:17:01,305 INFO L226 Difference]: Without dead ends: 273 [2023-11-12 02:17:01,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=166, Invalid=484, Unknown=0, NotChecked=0, Total=650 [2023-11-12 02:17:01,310 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 473 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:01,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 569 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-12 02:17:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-12 02:17:01,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 157. [2023-11-12 02:17:01,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 116 states have internal predecessors, (171), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 02:17:01,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 247 transitions. [2023-11-12 02:17:01,353 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 247 transitions. Word has length 124 [2023-11-12 02:17:01,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:01,354 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 247 transitions. [2023-11-12 02:17:01,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:01,355 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 247 transitions. [2023-11-12 02:17:01,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:17:01,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:01,358 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:01,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:01,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:01,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:01,360 INFO L85 PathProgramCache]: Analyzing trace with hash -210223772, now seen corresponding path program 1 times [2023-11-12 02:17:01,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:01,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220137827] [2023-11-12 02:17:01,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:01,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:17:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:17:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:17:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:17:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:17:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:17:07,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:17:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:17:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:17:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:17:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:17:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:17:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:17:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:17:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:17:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:17:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:17:07,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:17:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,665 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 02:17:07,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:07,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220137827] [2023-11-12 02:17:07,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220137827] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:07,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:07,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:07,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109722240] [2023-11-12 02:17:07,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:07,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:07,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:07,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:07,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:07,670 INFO L87 Difference]: Start difference. First operand 157 states and 247 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:08,539 INFO L93 Difference]: Finished difference Result 462 states and 715 transitions. [2023-11-12 02:17:08,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:17:08,543 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-11-12 02:17:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:08,554 INFO L225 Difference]: With dead ends: 462 [2023-11-12 02:17:08,554 INFO L226 Difference]: Without dead ends: 308 [2023-11-12 02:17:08,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:17:08,557 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 118 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:08,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 360 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:17:08,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-12 02:17:08,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 189. [2023-11-12 02:17:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.527027027027027) internal successors, (226), 148 states have internal predecessors, (226), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 02:17:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 302 transitions. [2023-11-12 02:17:08,633 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 302 transitions. Word has length 124 [2023-11-12 02:17:08,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:08,635 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 302 transitions. [2023-11-12 02:17:08,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:08,635 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 302 transitions. [2023-11-12 02:17:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:17:08,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:08,647 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:08,648 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:08,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:08,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1055195224, now seen corresponding path program 1 times [2023-11-12 02:17:08,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:08,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713525692] [2023-11-12 02:17:08,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:08,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:17:08,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:17:08,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:17:08,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:17:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:17:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:17:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:17:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:17:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:17:08,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:17:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:17:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:17:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:17:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:17:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:17:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:17:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:17:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:17:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 02:17:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:08,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713525692] [2023-11-12 02:17:08,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713525692] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:08,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:08,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:08,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244770559] [2023-11-12 02:17:08,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:08,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:08,829 INFO L87 Difference]: Start difference. First operand 189 states and 302 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:08,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:08,876 INFO L93 Difference]: Finished difference Result 366 states and 584 transitions. [2023-11-12 02:17:08,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:08,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-11-12 02:17:08,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:08,880 INFO L225 Difference]: With dead ends: 366 [2023-11-12 02:17:08,881 INFO L226 Difference]: Without dead ends: 180 [2023-11-12 02:17:08,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 02:17:08,895 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:08,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-12 02:17:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-11-12 02:17:08,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 139 states have (on average 1.4892086330935252) internal successors, (207), 139 states have internal predecessors, (207), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 02:17:08,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 283 transitions. [2023-11-12 02:17:08,940 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 283 transitions. Word has length 124 [2023-11-12 02:17:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:08,942 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 283 transitions. [2023-11-12 02:17:08,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 283 transitions. [2023-11-12 02:17:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:17:08,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:08,949 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:08,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:08,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:08,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash 295500902, now seen corresponding path program 1 times [2023-11-12 02:17:08,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:08,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356083146] [2023-11-12 02:17:08,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:08,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-12 02:17:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:17:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-12 02:17:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:17:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-12 02:17:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:17:09,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:17:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-12 02:17:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-12 02:17:09,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-12 02:17:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-12 02:17:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-11-12 02:17:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-12 02:17:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-12 02:17:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-12 02:17:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-12 02:17:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-12 02:17:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:17:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:17:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2023-11-12 02:17:09,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:09,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356083146] [2023-11-12 02:17:09,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356083146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:09,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:09,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278905154] [2023-11-12 02:17:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:09,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:09,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:09,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:09,104 INFO L87 Difference]: Start difference. First operand 180 states and 283 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:09,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:17:09,142 INFO L93 Difference]: Finished difference Result 337 states and 527 transitions. [2023-11-12 02:17:09,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:09,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 124 [2023-11-12 02:17:09,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:17:09,145 INFO L225 Difference]: With dead ends: 337 [2023-11-12 02:17:09,145 INFO L226 Difference]: Without dead ends: 160 [2023-11-12 02:17:09,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 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 02:17:09,152 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:17:09,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 178 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:17:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-12 02:17:09,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2023-11-12 02:17:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-12 02:17:09,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 245 transitions. [2023-11-12 02:17:09,181 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 245 transitions. Word has length 124 [2023-11-12 02:17:09,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:17:09,182 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 245 transitions. [2023-11-12 02:17:09,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2023-11-12 02:17:09,183 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 245 transitions. [2023-11-12 02:17:09,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-12 02:17:09,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:17:09,185 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:09,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:17:09,185 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:17:09,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:09,186 INFO L85 PathProgramCache]: Analyzing trace with hash -291305112, now seen corresponding path program 1 times [2023-11-12 02:17:09,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:09,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297042564] [2023-11-12 02:17:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:09,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat