./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f3651df43eadd796c0cc9773210da2768d88da1830d677872c83040231c1e758 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:40:57,762 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:40:57,881 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 22:40:57,890 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:40:57,891 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:40:57,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:40:57,932 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:40:57,932 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:40:57,933 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:40:57,939 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:40:57,939 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:40:57,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:40:57,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:40:57,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:40:57,944 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:40:57,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:40:57,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:40:57,946 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:40:57,947 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:40:57,947 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:40:57,948 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:40:57,949 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:40:57,949 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:40:57,950 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:40:57,951 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:40:57,951 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:40:57,952 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:40:57,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:40:57,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:40:57,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:40:57,955 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:40:57,955 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:40:57,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:40:57,956 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:40:57,956 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:40:57,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:40:57,957 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:40:57,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:40:57,958 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:40:57,958 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_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3651df43eadd796c0cc9773210da2768d88da1830d677872c83040231c1e758 [2023-11-23 22:40:58,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:40:58,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:40:58,293 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:40:58,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:40:58,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:40:58,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c [2023-11-23 22:41:01,520 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:41:01,954 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:41:01,954 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c [2023-11-23 22:41:01,979 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/data/b78c39494/808feb8e58724f52ad47f5cf26574ec7/FLAG686ef7153 [2023-11-23 22:41:01,994 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/data/b78c39494/808feb8e58724f52ad47f5cf26574ec7 [2023-11-23 22:41:01,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:41:01,998 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:41:02,000 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:02,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:41:02,006 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:41:02,006 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:01" (1/1) ... [2023-11-23 22:41:02,008 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5af07f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:02, skipping insertion in model container [2023-11-23 22:41:02,008 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:41:01" (1/1) ... [2023-11-23 22:41:02,092 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:41:02,351 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_984622fe-8da5-4f5a-a613-3709800f818e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c[1180,1193] [2023-11-23 22:41:03,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:03,050 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:41:03,061 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_984622fe-8da5-4f5a-a613-3709800f818e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c[1180,1193] [2023-11-23 22:41:03,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:41:03,302 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:41:03,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03 WrapperNode [2023-11-23 22:41:03,303 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:41:03,305 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:03,305 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:41:03,305 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:41:03,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:03,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:04,483 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 8679 [2023-11-23 22:41:04,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:41:04,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:41:04,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:41:04,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:41:04,497 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:04,497 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:04,784 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,066 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:41:05,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,465 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,510 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,688 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:41:05,689 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:41:05,689 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:41:05,690 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:41:05,691 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (1/1) ... [2023-11-23 22:41:05,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:41:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:41:05,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:41:05,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_984622fe-8da5-4f5a-a613-3709800f818e/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:41:05,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:41:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:41:05,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:41:05,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:41:06,431 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:41:06,434 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:41:15,134 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:41:15,367 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:41:15,367 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 22:41:15,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:15 BoogieIcfgContainer [2023-11-23 22:41:15,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:41:15,372 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:41:15,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:41:15,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:41:15,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:41:01" (1/3) ... [2023-11-23 22:41:15,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2ef96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:15, skipping insertion in model container [2023-11-23 22:41:15,378 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:41:03" (2/3) ... [2023-11-23 22:41:15,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff2ef96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:41:15, skipping insertion in model container [2023-11-23 22:41:15,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:41:15" (3/3) ... [2023-11-23 22:41:15,382 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.1.prop1-func-interl.c [2023-11-23 22:41:15,403 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:41:15,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:41:15,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:41:15,525 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;@70c74fe0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:41:15,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:41:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand has 1819 states, 1817 states have (on average 1.6725371491469456) internal successors, (3039), 1818 states have internal predecessors, (3039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:15,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-23 22:41:15,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:15,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:15,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:15,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:15,574 INFO L85 PathProgramCache]: Analyzing trace with hash -229014914, now seen corresponding path program 1 times [2023-11-23 22:41:15,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:15,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80121909] [2023-11-23 22:41:15,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:16,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:16,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:16,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80121909] [2023-11-23 22:41:16,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80121909] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:16,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:16,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:41:16,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098672098] [2023-11-23 22:41:16,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:16,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:41:16,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:16,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:41:16,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:16,722 INFO L87 Difference]: Start difference. First operand has 1819 states, 1817 states have (on average 1.6725371491469456) internal successors, (3039), 1818 states have internal predecessors, (3039), 0 states have call successors, (0), 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 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:17,159 INFO L93 Difference]: Finished difference Result 3723 states and 6224 transitions. [2023-11-23 22:41:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:41:17,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2023-11-23 22:41:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:17,205 INFO L225 Difference]: With dead ends: 3723 [2023-11-23 22:41:17,205 INFO L226 Difference]: Without dead ends: 1962 [2023-11-23 22:41:17,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:17,222 INFO L413 NwaCegarLoop]: 3267 mSDtfsCounter, 5836 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5836 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:17,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5836 Valid, 3602 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:41:17,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2023-11-23 22:41:17,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 1817. [2023-11-23 22:41:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1817 states, 1816 states have (on average 1.670704845814978) internal successors, (3034), 1816 states have internal predecessors, (3034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:17,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 3034 transitions. [2023-11-23 22:41:17,399 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 3034 transitions. Word has length 148 [2023-11-23 22:41:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:17,403 INFO L495 AbstractCegarLoop]: Abstraction has 1817 states and 3034 transitions. [2023-11-23 22:41:17,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 3 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:17,404 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 3034 transitions. [2023-11-23 22:41:17,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-23 22:41:17,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:17,408 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:17,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:41:17,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:17,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:17,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1989779080, now seen corresponding path program 1 times [2023-11-23 22:41:17,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:17,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819129523] [2023-11-23 22:41:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:17,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:18,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:18,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:18,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819129523] [2023-11-23 22:41:18,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819129523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:18,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:18,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:41:18,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993545843] [2023-11-23 22:41:18,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:18,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:41:18,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:41:18,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:18,106 INFO L87 Difference]: Start difference. First operand 1817 states and 3034 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:18,254 INFO L93 Difference]: Finished difference Result 1821 states and 3038 transitions. [2023-11-23 22:41:18,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:41:18,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 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 149 [2023-11-23 22:41:18,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:18,270 INFO L225 Difference]: With dead ends: 1821 [2023-11-23 22:41:18,270 INFO L226 Difference]: Without dead ends: 1819 [2023-11-23 22:41:18,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:18,274 INFO L413 NwaCegarLoop]: 3031 mSDtfsCounter, 1 mSDsluCounter, 6057 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9088 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:18,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9088 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:41:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2023-11-23 22:41:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1819. [2023-11-23 22:41:18,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1819 states, 1818 states have (on average 1.66996699669967) internal successors, (3036), 1818 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1819 states to 1819 states and 3036 transitions. [2023-11-23 22:41:18,341 INFO L78 Accepts]: Start accepts. Automaton has 1819 states and 3036 transitions. Word has length 149 [2023-11-23 22:41:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:18,342 INFO L495 AbstractCegarLoop]: Abstraction has 1819 states and 3036 transitions. [2023-11-23 22:41:18,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1819 states and 3036 transitions. [2023-11-23 22:41:18,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 22:41:18,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:18,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:18,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:41:18,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:18,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:18,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1551883519, now seen corresponding path program 1 times [2023-11-23 22:41:18,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:18,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548613923] [2023-11-23 22:41:18,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:18,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:18,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:18,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548613923] [2023-11-23 22:41:18,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548613923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:18,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:18,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:41:18,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511455176] [2023-11-23 22:41:18,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:18,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:41:18,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:18,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:41:18,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:18,766 INFO L87 Difference]: Start difference. First operand 1819 states and 3036 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:18,914 INFO L93 Difference]: Finished difference Result 3583 states and 5980 transitions. [2023-11-23 22:41:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:41:18,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 150 [2023-11-23 22:41:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:18,927 INFO L225 Difference]: With dead ends: 3583 [2023-11-23 22:41:18,927 INFO L226 Difference]: Without dead ends: 1822 [2023-11-23 22:41:18,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:18,931 INFO L413 NwaCegarLoop]: 3031 mSDtfsCounter, 1 mSDsluCounter, 6055 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9086 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:18,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9086 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:41:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2023-11-23 22:41:18,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1821. [2023-11-23 22:41:18,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1821 states, 1820 states have (on average 1.6692307692307693) internal successors, (3038), 1820 states have internal predecessors, (3038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1821 states to 1821 states and 3038 transitions. [2023-11-23 22:41:18,996 INFO L78 Accepts]: Start accepts. Automaton has 1821 states and 3038 transitions. Word has length 150 [2023-11-23 22:41:18,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:18,996 INFO L495 AbstractCegarLoop]: Abstraction has 1821 states and 3038 transitions. [2023-11-23 22:41:18,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:18,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1821 states and 3038 transitions. [2023-11-23 22:41:19,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-23 22:41:19,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:19,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:19,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:41:19,008 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:19,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash 700826932, now seen corresponding path program 1 times [2023-11-23 22:41:19,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:19,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037280284] [2023-11-23 22:41:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:19,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:19,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:19,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:19,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037280284] [2023-11-23 22:41:19,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037280284] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:19,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:19,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:41:19,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407932365] [2023-11-23 22:41:19,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:19,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:41:19,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:19,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:41:19,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:19,377 INFO L87 Difference]: Start difference. First operand 1821 states and 3038 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:19,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:19,564 INFO L93 Difference]: Finished difference Result 5337 states and 8907 transitions. [2023-11-23 22:41:19,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:41:19,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 151 [2023-11-23 22:41:19,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:19,586 INFO L225 Difference]: With dead ends: 5337 [2023-11-23 22:41:19,586 INFO L226 Difference]: Without dead ends: 3574 [2023-11-23 22:41:19,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:41:19,599 INFO L413 NwaCegarLoop]: 3283 mSDtfsCounter, 2924 mSDsluCounter, 6303 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2924 SdHoareTripleChecker+Valid, 9586 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:19,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2924 Valid, 9586 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:41:19,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2023-11-23 22:41:19,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 1823. [2023-11-23 22:41:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1822 states have (on average 1.668496158068057) internal successors, (3040), 1822 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:19,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 3040 transitions. [2023-11-23 22:41:19,675 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 3040 transitions. Word has length 151 [2023-11-23 22:41:19,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:19,675 INFO L495 AbstractCegarLoop]: Abstraction has 1823 states and 3040 transitions. [2023-11-23 22:41:19,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 3040 transitions. [2023-11-23 22:41:19,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-11-23 22:41:19,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:19,678 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:19,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:41:19,678 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:19,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 140092745, now seen corresponding path program 1 times [2023-11-23 22:41:19,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:19,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028541467] [2023-11-23 22:41:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:19,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:19,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:20,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:20,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:20,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028541467] [2023-11-23 22:41:20,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028541467] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:20,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:20,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:41:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586215134] [2023-11-23 22:41:20,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:20,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:41:20,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:20,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:41:20,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:41:20,455 INFO L87 Difference]: Start difference. First operand 1823 states and 3040 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:23,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 22:41:23,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:23,180 INFO L93 Difference]: Finished difference Result 3737 states and 6231 transitions. [2023-11-23 22:41:23,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:41:23,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2023-11-23 22:41:23,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:23,194 INFO L225 Difference]: With dead ends: 3737 [2023-11-23 22:41:23,195 INFO L226 Difference]: Without dead ends: 1972 [2023-11-23 22:41:23,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:41:23,199 INFO L413 NwaCegarLoop]: 3134 mSDtfsCounter, 3145 mSDsluCounter, 6532 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3145 SdHoareTripleChecker+Valid, 9666 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:23,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3145 Valid, 9666 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 495 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2023-11-23 22:41:23,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-11-23 22:41:23,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1825. [2023-11-23 22:41:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1825 states, 1824 states have (on average 1.667763157894737) internal successors, (3042), 1824 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:23,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1825 states to 1825 states and 3042 transitions. [2023-11-23 22:41:23,258 INFO L78 Accepts]: Start accepts. Automaton has 1825 states and 3042 transitions. Word has length 152 [2023-11-23 22:41:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:23,258 INFO L495 AbstractCegarLoop]: Abstraction has 1825 states and 3042 transitions. [2023-11-23 22:41:23,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 5 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1825 states and 3042 transitions. [2023-11-23 22:41:23,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 22:41:23,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:23,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:23,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:41:23,262 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:23,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash -150894482, now seen corresponding path program 1 times [2023-11-23 22:41:23,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:23,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43393010] [2023-11-23 22:41:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:23,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43393010] [2023-11-23 22:41:23,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43393010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:23,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:23,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:41:23,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296912527] [2023-11-23 22:41:23,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:23,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:41:23,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:41:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:41:23,830 INFO L87 Difference]: Start difference. First operand 1825 states and 3042 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:26,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 22:41:28,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 22:41:30,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-23 22:41:30,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:30,689 INFO L93 Difference]: Finished difference Result 3739 states and 6232 transitions. [2023-11-23 22:41:30,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:41:30,690 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-11-23 22:41:30,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:30,705 INFO L225 Difference]: With dead ends: 3739 [2023-11-23 22:41:30,705 INFO L226 Difference]: Without dead ends: 1972 [2023-11-23 22:41:30,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:41:30,710 INFO L413 NwaCegarLoop]: 3130 mSDtfsCounter, 5844 mSDsluCounter, 6525 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5844 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:30,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5844 Valid, 9655 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 6.7s Time] [2023-11-23 22:41:30,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1972 states. [2023-11-23 22:41:30,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1972 to 1826. [2023-11-23 22:41:30,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1826 states, 1825 states have (on average 1.6673972602739726) internal successors, (3043), 1825 states have internal predecessors, (3043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:30,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1826 states to 1826 states and 3043 transitions. [2023-11-23 22:41:30,766 INFO L78 Accepts]: Start accepts. Automaton has 1826 states and 3043 transitions. Word has length 153 [2023-11-23 22:41:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:30,767 INFO L495 AbstractCegarLoop]: Abstraction has 1826 states and 3043 transitions. [2023-11-23 22:41:30,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1826 states and 3043 transitions. [2023-11-23 22:41:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 22:41:30,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:30,769 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:30,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:41:30,770 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:30,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -737700496, now seen corresponding path program 1 times [2023-11-23 22:41:30,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:30,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424482235] [2023-11-23 22:41:30,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:30,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:31,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:31,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:31,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424482235] [2023-11-23 22:41:31,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424482235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:31,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:31,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:41:31,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637241902] [2023-11-23 22:41:31,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:31,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:41:31,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:41:31,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:41:31,255 INFO L87 Difference]: Start difference. First operand 1826 states and 3043 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:33,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:33,837 INFO L93 Difference]: Finished difference Result 5360 states and 8935 transitions. [2023-11-23 22:41:33,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:41:33,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-11-23 22:41:33,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:33,858 INFO L225 Difference]: With dead ends: 5360 [2023-11-23 22:41:33,858 INFO L226 Difference]: Without dead ends: 3592 [2023-11-23 22:41:33,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:41:33,862 INFO L413 NwaCegarLoop]: 2422 mSDtfsCounter, 8766 mSDsluCounter, 4838 mSDsCounter, 0 mSdLazyCounter, 1841 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8766 SdHoareTripleChecker+Valid, 7260 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1841 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8766 Valid, 7260 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1841 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-23 22:41:33,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3592 states. [2023-11-23 22:41:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3592 to 1983. [2023-11-23 22:41:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 1.6649848637739657) internal successors, (3300), 1982 states have internal predecessors, (3300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:33,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 3300 transitions. [2023-11-23 22:41:33,931 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 3300 transitions. Word has length 153 [2023-11-23 22:41:33,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:33,931 INFO L495 AbstractCegarLoop]: Abstraction has 1983 states and 3300 transitions. [2023-11-23 22:41:33,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 4 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:33,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 3300 transitions. [2023-11-23 22:41:33,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 22:41:33,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:33,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:33,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:41:33,934 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:33,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:33,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1130727506, now seen corresponding path program 1 times [2023-11-23 22:41:33,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:33,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634897792] [2023-11-23 22:41:33,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:33,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:35,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:35,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:35,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634897792] [2023-11-23 22:41:35,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634897792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:35,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:35,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 22:41:35,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331725924] [2023-11-23 22:41:35,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:35,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:41:35,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:41:35,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:41:35,306 INFO L87 Difference]: Start difference. First operand 1983 states and 3300 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:42,359 INFO L93 Difference]: Finished difference Result 5508 states and 9179 transitions. [2023-11-23 22:41:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:41:42,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-11-23 22:41:42,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:42,384 INFO L225 Difference]: With dead ends: 5508 [2023-11-23 22:41:42,384 INFO L226 Difference]: Without dead ends: 3740 [2023-11-23 22:41:42,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:41:42,389 INFO L413 NwaCegarLoop]: 5014 mSDtfsCounter, 8805 mSDsluCounter, 17245 mSDsCounter, 0 mSdLazyCounter, 6203 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8805 SdHoareTripleChecker+Valid, 22259 SdHoareTripleChecker+Invalid, 6205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:42,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8805 Valid, 22259 Invalid, 6205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6203 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-11-23 22:41:42,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3740 states. [2023-11-23 22:41:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3740 to 1986. [2023-11-23 22:41:42,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1986 states, 1985 states have (on average 1.6644836272040302) internal successors, (3304), 1985 states have internal predecessors, (3304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1986 states to 1986 states and 3304 transitions. [2023-11-23 22:41:42,464 INFO L78 Accepts]: Start accepts. Automaton has 1986 states and 3304 transitions. Word has length 153 [2023-11-23 22:41:42,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:42,464 INFO L495 AbstractCegarLoop]: Abstraction has 1986 states and 3304 transitions. [2023-11-23 22:41:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 8 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:42,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1986 states and 3304 transitions. [2023-11-23 22:41:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 22:41:42,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:42,467 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:41:42,468 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:42,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1130667924, now seen corresponding path program 1 times [2023-11-23 22:41:42,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:42,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892238809] [2023-11-23 22:41:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:42,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:43,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:41:43,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:41:43,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892238809] [2023-11-23 22:41:43,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892238809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:41:43,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:41:43,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:41:43,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800786925] [2023-11-23 22:41:43,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:41:43,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:41:43,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:43,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:41:43,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:41:43,445 INFO L87 Difference]: Start difference. First operand 1986 states and 3304 transitions. Second operand has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:46,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:46,820 INFO L93 Difference]: Finished difference Result 3757 states and 6255 transitions. [2023-11-23 22:41:46,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:41:46,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2023-11-23 22:41:46,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:46,833 INFO L225 Difference]: With dead ends: 3757 [2023-11-23 22:41:46,833 INFO L226 Difference]: Without dead ends: 1985 [2023-11-23 22:41:46,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:41:46,838 INFO L413 NwaCegarLoop]: 2480 mSDtfsCounter, 3139 mSDsluCounter, 7584 mSDsCounter, 0 mSdLazyCounter, 3425 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 10064 SdHoareTripleChecker+Invalid, 3429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 3425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:46,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3139 Valid, 10064 Invalid, 3429 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 3425 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-23 22:41:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2023-11-23 22:41:46,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1983. [2023-11-23 22:41:46,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1983 states, 1982 states have (on average 1.6644803229061553) internal successors, (3299), 1982 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:46,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1983 states to 1983 states and 3299 transitions. [2023-11-23 22:41:46,888 INFO L78 Accepts]: Start accepts. Automaton has 1983 states and 3299 transitions. Word has length 153 [2023-11-23 22:41:46,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:46,889 INFO L495 AbstractCegarLoop]: Abstraction has 1983 states and 3299 transitions. [2023-11-23 22:41:46,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.125) internal successors, (153), 7 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:41:46,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1983 states and 3299 transitions. [2023-11-23 22:41:46,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-23 22:41:46,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:46,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:46,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:41:46,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:46,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1389232428, now seen corresponding path program 1 times [2023-11-23 22:41:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:46,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178981679] [2023-11-23 22:41:46,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:46,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms