./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme --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 965536a1eccbb3950fb02708c11ed62fda8db430ae4f769dc023e63105c711ca --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:17,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:18,067 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-26 11:50:18,080 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:18,081 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:18,121 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:18,122 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:18,123 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:18,125 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:18,130 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:18,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:18,131 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:18,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:18,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:18,134 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:18,134 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:18,135 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:18,135 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:18,136 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:18,136 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:18,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:18,137 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:18,138 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:18,138 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:18,139 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:18,139 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:18,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:18,140 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:18,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:18,141 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:18,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:18,143 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:18,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:18,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:18,144 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:18,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:18,144 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:18,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:18,145 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:18,145 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_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965536a1eccbb3950fb02708c11ed62fda8db430ae4f769dc023e63105c711ca [2023-11-26 11:50:18,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:18,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:18,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:18,505 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:18,505 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:18,507 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2023-11-26 11:50:21,647 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:21,971 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:21,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2023-11-26 11:50:21,992 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/data/739443075/177450f7ce0a4596ae3275085568770b/FLAGa0f20f72b [2023-11-26 11:50:22,008 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/data/739443075/177450f7ce0a4596ae3275085568770b [2023-11-26 11:50:22,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:22,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:22,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:22,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:22,023 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:22,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66486f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:22, skipping insertion in model container [2023-11-26 11:50:22,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:22" (1/1) ... [2023-11-26 11:50:22,106 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:22,319 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_e604c5a7-8acf-4d2b-814e-7e230dee97dc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1244,1257] [2023-11-26 11:50:22,867 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:22,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:22,895 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_e604c5a7-8acf-4d2b-814e-7e230dee97dc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1244,1257] [2023-11-26 11:50:23,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:23,066 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:23,067 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23 WrapperNode [2023-11-26 11:50:23,067 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:23,068 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:23,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:23,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:23,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,540 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4254 [2023-11-26 11:50:23,541 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:23,542 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:23,543 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:23,544 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:23,556 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,839 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,963 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-11-26 11:50:23,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:23,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,156 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,255 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,361 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:24,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:24,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:24,376 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:24,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (1/1) ... [2023-11-26 11:50:24,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:24,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:24,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:24,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e604c5a7-8acf-4d2b-814e-7e230dee97dc/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:50:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:25,040 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:25,043 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:28,758 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:28,911 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:28,912 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:50:28,913 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:28 BoogieIcfgContainer [2023-11-26 11:50:28,914 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:28,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:28,919 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:28,922 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:28,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:22" (1/3) ... [2023-11-26 11:50:28,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723f92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:28, skipping insertion in model container [2023-11-26 11:50:28,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:23" (2/3) ... [2023-11-26 11:50:28,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1723f92a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:28, skipping insertion in model container [2023-11-26 11:50:28,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:28" (3/3) ... [2023-11-26 11:50:28,928 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal6.c [2023-11-26 11:50:28,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:28,950 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:50:29,047 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:29,056 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;@42f248a6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:29,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:50:29,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 833 states, 831 states have (on average 1.667870036101083) internal successors, (1386), 832 states have internal predecessors, (1386), 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) [2023-11-26 11:50:29,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2023-11-26 11:50:29,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:29,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:29,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:29,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:29,128 INFO L85 PathProgramCache]: Analyzing trace with hash 187594072, now seen corresponding path program 1 times [2023-11-26 11:50:29,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:29,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457184555] [2023-11-26 11:50:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:29,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:32,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:32,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457184555] [2023-11-26 11:50:32,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457184555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:32,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:32,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:32,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7890393] [2023-11-26 11:50:32,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:32,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:32,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:32,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:32,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:32,766 INFO L87 Difference]: Start difference. First operand has 833 states, 831 states have (on average 1.667870036101083) internal successors, (1386), 832 states have internal predecessors, (1386), 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 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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) [2023-11-26 11:50:32,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:32,932 INFO L93 Difference]: Finished difference Result 1644 states and 2738 transitions. [2023-11-26 11:50:32,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:32,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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 362 [2023-11-26 11:50:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:32,966 INFO L225 Difference]: With dead ends: 1644 [2023-11-26 11:50:32,967 INFO L226 Difference]: Without dead ends: 833 [2023-11-26 11:50:32,977 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 [2023-11-26 11:50:32,981 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4132 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4132 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-26 11:50:33,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-26 11:50:33,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 832 states have (on average 1.6634615384615385) internal successors, (1384), 832 states have internal predecessors, (1384), 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) [2023-11-26 11:50:33,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1384 transitions. [2023-11-26 11:50:33,093 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1384 transitions. Word has length 362 [2023-11-26 11:50:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:33,095 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1384 transitions. [2023-11-26 11:50:33,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.5) internal successors, (362), 4 states have internal predecessors, (362), 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) [2023-11-26 11:50:33,096 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1384 transitions. [2023-11-26 11:50:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2023-11-26 11:50:33,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:33,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:33,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:33,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:33,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:33,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1522176047, now seen corresponding path program 1 times [2023-11-26 11:50:33,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:33,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238573201] [2023-11-26 11:50:33,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:33,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:34,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:34,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:34,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238573201] [2023-11-26 11:50:34,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238573201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:34,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:34,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:34,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246521371] [2023-11-26 11:50:34,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:34,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:50:34,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:34,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:50:34,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:50:34,939 INFO L87 Difference]: Start difference. First operand 833 states and 1384 transitions. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2023-11-26 11:50:35,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:35,038 INFO L93 Difference]: Finished difference Result 1647 states and 2736 transitions. [2023-11-26 11:50:35,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:50:35,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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 363 [2023-11-26 11:50:35,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:35,047 INFO L225 Difference]: With dead ends: 1647 [2023-11-26 11:50:35,047 INFO L226 Difference]: Without dead ends: 836 [2023-11-26 11:50:35,049 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 [2023-11-26 11:50:35,051 INFO L413 NwaCegarLoop]: 1379 mSDtfsCounter, 1 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4130 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 [2023-11-26 11:50:35,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4130 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:35,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2023-11-26 11:50:35,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 835. [2023-11-26 11:50:35,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.6618705035971224) internal successors, (1386), 834 states have internal predecessors, (1386), 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) [2023-11-26 11:50:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1386 transitions. [2023-11-26 11:50:35,091 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1386 transitions. Word has length 363 [2023-11-26 11:50:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:35,094 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 1386 transitions. [2023-11-26 11:50:35,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 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) [2023-11-26 11:50:35,094 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1386 transitions. [2023-11-26 11:50:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-26 11:50:35,103 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:35,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:35,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:50:35,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:35,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash -267613102, now seen corresponding path program 1 times [2023-11-26 11:50:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:35,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717947746] [2023-11-26 11:50:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:35,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:41,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:41,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:41,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717947746] [2023-11-26 11:50:41,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717947746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:41,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:41,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277442955] [2023-11-26 11:50:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:41,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:41,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:41,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:41,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:41,179 INFO L87 Difference]: Start difference. First operand 835 states and 1386 transitions. Second operand has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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) [2023-11-26 11:50:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:41,445 INFO L93 Difference]: Finished difference Result 2926 states and 4860 transitions. [2023-11-26 11:50:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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 364 [2023-11-26 11:50:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:41,459 INFO L225 Difference]: With dead ends: 2926 [2023-11-26 11:50:41,459 INFO L226 Difference]: Without dead ends: 2113 [2023-11-26 11:50:41,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:41,468 INFO L413 NwaCegarLoop]: 2164 mSDtfsCounter, 4012 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4012 SdHoareTripleChecker+Valid, 6468 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:41,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4012 Valid, 6468 Invalid, 24 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:41,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2023-11-26 11:50:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 838. [2023-11-26 11:50:41,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 837 states have (on average 1.6594982078853047) internal successors, (1389), 837 states have internal predecessors, (1389), 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) [2023-11-26 11:50:41,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1389 transitions. [2023-11-26 11:50:41,515 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1389 transitions. Word has length 364 [2023-11-26 11:50:41,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:41,516 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1389 transitions. [2023-11-26 11:50:41,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 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) [2023-11-26 11:50:41,518 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1389 transitions. [2023-11-26 11:50:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-26 11:50:41,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:41,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:41,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:41,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:41,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -117945565, now seen corresponding path program 1 times [2023-11-26 11:50:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:41,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659366430] [2023-11-26 11:50:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:47,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:47,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:47,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659366430] [2023-11-26 11:50:47,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659366430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:47,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:47,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:50:47,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106610912] [2023-11-26 11:50:47,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:47,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:47,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:47,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:47,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:47,760 INFO L87 Difference]: Start difference. First operand 838 states and 1389 transitions. Second operand has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 6 states have internal predecessors, (365), 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) [2023-11-26 11:50:49,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:49,494 INFO L93 Difference]: Finished difference Result 2131 states and 3536 transitions. [2023-11-26 11:50:49,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:49,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 6 states have internal predecessors, (365), 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 365 [2023-11-26 11:50:49,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:49,503 INFO L225 Difference]: With dead ends: 2131 [2023-11-26 11:50:49,504 INFO L226 Difference]: Without dead ends: 1315 [2023-11-26 11:50:49,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:50:49,513 INFO L413 NwaCegarLoop]: 1794 mSDtfsCounter, 3183 mSDsluCounter, 4960 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3183 SdHoareTripleChecker+Valid, 6754 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:49,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3183 Valid, 6754 Invalid, 1381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-26 11:50:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2023-11-26 11:50:49,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 840. [2023-11-26 11:50:49,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.6579261025029797) internal successors, (1391), 839 states have internal predecessors, (1391), 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) [2023-11-26 11:50:49,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1391 transitions. [2023-11-26 11:50:49,545 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1391 transitions. Word has length 365 [2023-11-26 11:50:49,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:49,546 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1391 transitions. [2023-11-26 11:50:49,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 52.142857142857146) internal successors, (365), 6 states have internal predecessors, (365), 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) [2023-11-26 11:50:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1391 transitions. [2023-11-26 11:50:49,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-26 11:50:49,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:49,554 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:49,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:50:49,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:49,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:49,556 INFO L85 PathProgramCache]: Analyzing trace with hash -351521716, now seen corresponding path program 1 times [2023-11-26 11:50:49,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:49,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358260834] [2023-11-26 11:50:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:49,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:53,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:53,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:53,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358260834] [2023-11-26 11:50:53,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358260834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:53,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:53,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731884064] [2023-11-26 11:50:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:53,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:53,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:53,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:53,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:53,934 INFO L87 Difference]: Start difference. First operand 840 states and 1391 transitions. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-11-26 11:50:54,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:54,001 INFO L93 Difference]: Finished difference Result 2162 states and 3583 transitions. [2023-11-26 11:50:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:54,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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 366 [2023-11-26 11:50:54,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:54,012 INFO L225 Difference]: With dead ends: 2162 [2023-11-26 11:50:54,012 INFO L226 Difference]: Without dead ends: 1344 [2023-11-26 11:50:54,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:54,014 INFO L413 NwaCegarLoop]: 2209 mSDtfsCounter, 1344 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1344 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:54,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1344 Valid, 3075 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:54,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1344 states. [2023-11-26 11:50:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1344 to 840. [2023-11-26 11:50:54,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.6567342073897497) internal successors, (1390), 839 states have internal predecessors, (1390), 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) [2023-11-26 11:50:54,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1390 transitions. [2023-11-26 11:50:54,048 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1390 transitions. Word has length 366 [2023-11-26 11:50:54,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:54,050 INFO L495 AbstractCegarLoop]: Abstraction has 840 states and 1390 transitions. [2023-11-26 11:50:54,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-11-26 11:50:54,051 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1390 transitions. [2023-11-26 11:50:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 11:50:54,060 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:54,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:50:54,061 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:50:54,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1044846317, now seen corresponding path program 1 times [2023-11-26 11:50:54,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233181887] [2023-11-26 11:50:54,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:59,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:59,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233181887] [2023-11-26 11:50:59,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233181887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:59,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:59,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:50:59,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430765203] [2023-11-26 11:50:59,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:50:59,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:59,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:50:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:50:59,496 INFO L87 Difference]: Start difference. First operand 840 states and 1390 transitions. Second operand has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 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) [2023-11-26 11:51:01,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:01,541 INFO L93 Difference]: Finished difference Result 2482 states and 4106 transitions. [2023-11-26 11:51:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:51:01,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 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 367 [2023-11-26 11:51:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:01,553 INFO L225 Difference]: With dead ends: 2482 [2023-11-26 11:51:01,554 INFO L226 Difference]: Without dead ends: 1664 [2023-11-26 11:51:01,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:01,563 INFO L413 NwaCegarLoop]: 1830 mSDtfsCounter, 3232 mSDsluCounter, 6611 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3232 SdHoareTripleChecker+Valid, 8441 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:01,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3232 Valid, 8441 Invalid, 1796 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-26 11:51:01,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2023-11-26 11:51:01,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 845. [2023-11-26 11:51:01,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 844 states have (on average 1.6540284360189574) internal successors, (1396), 844 states have internal predecessors, (1396), 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) [2023-11-26 11:51:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1396 transitions. [2023-11-26 11:51:01,594 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1396 transitions. Word has length 367 [2023-11-26 11:51:01,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:01,596 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1396 transitions. [2023-11-26 11:51:01,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 45.875) internal successors, (367), 7 states have internal predecessors, (367), 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) [2023-11-26 11:51:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1396 transitions. [2023-11-26 11:51:01,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-26 11:51:01,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:01,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:01,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:51:01,605 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:51:01,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:01,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1255976273, now seen corresponding path program 1 times [2023-11-26 11:51:01,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:01,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998731508] [2023-11-26 11:51:01,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:01,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms