./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya --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 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:14:37,813 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:14:37,875 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-29 00:14:37,881 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:14:37,881 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:14:37,903 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:14:37,904 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:14:37,905 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:14:37,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:14:37,906 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:14:37,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:14:37,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:14:37,908 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:14:37,909 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:14:37,909 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:14:37,910 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:14:37,910 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:14:37,911 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:14:37,911 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:14:37,912 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:14:37,912 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:14:37,914 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:14:37,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:14:37,915 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:14:37,915 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:14:37,916 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:14:37,916 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:14:37,916 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:14:37,917 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:37,917 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:14:37,917 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:14:37,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:14:37,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:14:37,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:14:37,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:14:37,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:14:37,919 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:14:37,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:14:37,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:14:37,919 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 [2023-11-29 00:14:38,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:14:38,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:14:38,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:14:38,176 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:14:38,177 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:14:38,178 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2023-11-29 00:14:40,915 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:14:41,087 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:14:41,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2023-11-29 00:14:41,096 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/913ab6d5a/75d702f1cfc64975a957743138843027/FLAG4fbfcc906 [2023-11-29 00:14:41,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/913ab6d5a/75d702f1cfc64975a957743138843027 [2023-11-29 00:14:41,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:14:41,112 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:14:41,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:41,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:14:41,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:14:41,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,118 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d124b1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41, skipping insertion in model container [2023-11-29 00:14:41,119 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,144 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:14:41,268 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2023-11-29 00:14:41,317 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:41,327 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:14:41,337 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2023-11-29 00:14:41,366 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:41,378 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:14:41,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41 WrapperNode [2023-11-29 00:14:41,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:41,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:41,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:14:41,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:14:41,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,441 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 245 [2023-11-29 00:14:41,441 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:41,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:14:41,442 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:14:41,442 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:14:41,454 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,460 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,480 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:14:41,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,499 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,504 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,508 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,515 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:14:41,516 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:14:41,516 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:14:41,516 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:14:41,517 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (1/1) ... [2023-11-29 00:14:41,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:41,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:41,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:14:41,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:14:41,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:14:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:14:41,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:14:41,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:14:41,678 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:14:41,681 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:14:42,056 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:14:42,083 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:14:42,083 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:14:42,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:42 BoogieIcfgContainer [2023-11-29 00:14:42,084 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:14:42,087 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:14:42,087 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:14:42,091 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:14:42,091 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:14:41" (1/3) ... [2023-11-29 00:14:42,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2050b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:42, skipping insertion in model container [2023-11-29 00:14:42,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:41" (2/3) ... [2023-11-29 00:14:42,092 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2050b3f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:42, skipping insertion in model container [2023-11-29 00:14:42,092 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:42" (3/3) ... [2023-11-29 00:14:42,094 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2023-11-29 00:14:42,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:14:42,116 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:14:42,165 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:14:42,173 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;@2be2f7dc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:14:42,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:14:42,177 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 43 states have internal predecessors, (70), 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) [2023-11-29 00:14:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:14:42,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:42,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:42,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:42,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:42,191 INFO L85 PathProgramCache]: Analyzing trace with hash 122773413, now seen corresponding path program 1 times [2023-11-29 00:14:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235361966] [2023-11-29 00:14:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:42,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:42,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:42,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235361966] [2023-11-29 00:14:42,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235361966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:42,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:42,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:42,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435430103] [2023-11-29 00:14:42,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:42,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:42,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:42,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:42,744 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 43 states have internal predecessors, (70), 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 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-29 00:14:42,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:42,833 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2023-11-29 00:14:42,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:42,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2023-11-29 00:14:42,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:42,844 INFO L225 Difference]: With dead ends: 73 [2023-11-29 00:14:42,844 INFO L226 Difference]: Without dead ends: 42 [2023-11-29 00:14:42,847 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 [2023-11-29 00:14:42,851 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 57 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:42,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 85 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:42,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-29 00:14:42,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-29 00:14:42,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.5609756097560976) internal successors, (64), 41 states have internal predecessors, (64), 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) [2023-11-29 00:14:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 64 transitions. [2023-11-29 00:14:42,885 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 64 transitions. Word has length 18 [2023-11-29 00:14:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:42,885 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 64 transitions. [2023-11-29 00:14:42,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-29 00:14:42,886 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 64 transitions. [2023-11-29 00:14:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 00:14:42,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:42,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:42,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:14:42,887 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:42,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:42,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1922801427, now seen corresponding path program 1 times [2023-11-29 00:14:42,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:42,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981586366] [2023-11-29 00:14:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:43,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:43,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981586366] [2023-11-29 00:14:43,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981586366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:43,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:43,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:14:43,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929382690] [2023-11-29 00:14:43,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:43,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:43,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:43,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:43,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:43,063 INFO L87 Difference]: Start difference. First operand 42 states and 64 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:14:43,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:43,086 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2023-11-29 00:14:43,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:43,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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 19 [2023-11-29 00:14:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:43,088 INFO L225 Difference]: With dead ends: 46 [2023-11-29 00:14:43,088 INFO L226 Difference]: Without dead ends: 44 [2023-11-29 00:14:43,089 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 [2023-11-29 00:14:43,090 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 178 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 [2023-11-29 00:14:43,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 178 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-29 00:14:43,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-29 00:14:43,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.5348837209302326) internal successors, (66), 43 states have internal predecessors, (66), 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) [2023-11-29 00:14:43,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 66 transitions. [2023-11-29 00:14:43,098 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 66 transitions. Word has length 19 [2023-11-29 00:14:43,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:43,098 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 66 transitions. [2023-11-29 00:14:43,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 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) [2023-11-29 00:14:43,099 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 66 transitions. [2023-11-29 00:14:43,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-29 00:14:43,100 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:43,100 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] [2023-11-29 00:14:43,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:14:43,100 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:43,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:43,101 INFO L85 PathProgramCache]: Analyzing trace with hash 524422939, now seen corresponding path program 1 times [2023-11-29 00:14:43,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:43,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343005133] [2023-11-29 00:14:43,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:43,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:43,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:43,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:43,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343005133] [2023-11-29 00:14:43,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343005133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:43,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:43,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:14:43,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403843608] [2023-11-29 00:14:43,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:43,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:43,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:43,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:43,202 INFO L87 Difference]: Start difference. First operand 44 states and 66 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-29 00:14:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:43,229 INFO L93 Difference]: Finished difference Result 78 states and 115 transitions. [2023-11-29 00:14:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:43,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2023-11-29 00:14:43,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:43,231 INFO L225 Difference]: With dead ends: 78 [2023-11-29 00:14:43,231 INFO L226 Difference]: Without dead ends: 47 [2023-11-29 00:14:43,232 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 [2023-11-29 00:14:43,233 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 176 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 [2023-11-29 00:14:43,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 176 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:43,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-29 00:14:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-11-29 00:14:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.511111111111111) internal successors, (68), 45 states have internal predecessors, (68), 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) [2023-11-29 00:14:43,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 68 transitions. [2023-11-29 00:14:43,241 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 68 transitions. Word has length 20 [2023-11-29 00:14:43,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:43,241 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 68 transitions. [2023-11-29 00:14:43,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2023-11-29 00:14:43,242 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 68 transitions. [2023-11-29 00:14:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:14:43,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:43,243 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] [2023-11-29 00:14:43,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:14:43,243 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:43,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash 641816905, now seen corresponding path program 1 times [2023-11-29 00:14:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:43,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375563156] [2023-11-29 00:14:43,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:43,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:43,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:43,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:43,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375563156] [2023-11-29 00:14:43,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375563156] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:43,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:43,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:14:43,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031491897] [2023-11-29 00:14:43,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:43,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:14:43,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:43,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:14:43,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:14:43,505 INFO L87 Difference]: Start difference. First operand 46 states and 68 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-29 00:14:43,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:43,552 INFO L93 Difference]: Finished difference Result 105 states and 151 transitions. [2023-11-29 00:14:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:14:43,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2023-11-29 00:14:43,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:43,554 INFO L225 Difference]: With dead ends: 105 [2023-11-29 00:14:43,554 INFO L226 Difference]: Without dead ends: 72 [2023-11-29 00:14:43,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:43,556 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 124 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:43,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 173 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:43,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-29 00:14:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 46. [2023-11-29 00:14:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.488888888888889) internal successors, (67), 45 states have internal predecessors, (67), 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) [2023-11-29 00:14:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2023-11-29 00:14:43,563 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 67 transitions. Word has length 21 [2023-11-29 00:14:43,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:43,563 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 67 transitions. [2023-11-29 00:14:43,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2023-11-29 00:14:43,564 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 67 transitions. [2023-11-29 00:14:43,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:14:43,565 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:43,565 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] [2023-11-29 00:14:43,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:14:43,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:43,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:43,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1133190457, now seen corresponding path program 1 times [2023-11-29 00:14:43,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:43,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728965911] [2023-11-29 00:14:43,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:43,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:14:43,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 00:14:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 00:14:43,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 00:14:43,634 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 00:14:43,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-29 00:14:43,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:14:43,640 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-29 00:14:43,644 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:14:43,667 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated [2023-11-29 00:14:43,668 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 00:14:43,668 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated [2023-11-29 00:14:43,668 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 00:14:43,669 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-29 00:14:43,669 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated [2023-11-29 00:14:43,670 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-29 00:14:43,670 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated [2023-11-29 00:14:43,672 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated [2023-11-29 00:14:43,674 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated [2023-11-29 00:14:43,675 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated [2023-11-29 00:14:43,676 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-29 00:14:43,685 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:14:43 BoogieIcfgContainer [2023-11-29 00:14:43,685 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:14:43,686 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:14:43,686 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:14:43,686 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:14:43,687 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:42" (3/4) ... [2023-11-29 00:14:43,689 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 00:14:43,690 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:14:43,691 INFO L158 Benchmark]: Toolchain (without parser) took 2578.70ms. Allocated memory is still 176.2MB. Free memory was 140.0MB in the beginning and 85.9MB in the end (delta: 54.1MB). Peak memory consumption was 55.3MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,691 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:14:43,691 INFO L158 Benchmark]: CACSL2BoogieTranslator took 266.41ms. Allocated memory is still 176.2MB. Free memory was 140.0MB in the beginning and 126.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,691 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.79ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 121.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,692 INFO L158 Benchmark]: Boogie Preprocessor took 73.37ms. Allocated memory is still 176.2MB. Free memory was 121.1MB in the beginning and 117.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,692 INFO L158 Benchmark]: RCFGBuilder took 568.04ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 88.8MB in the end (delta: 28.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,693 INFO L158 Benchmark]: TraceAbstraction took 1598.66ms. Allocated memory is still 176.2MB. Free memory was 88.1MB in the beginning and 85.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2023-11-29 00:14:43,693 INFO L158 Benchmark]: Witness Printer took 3.91ms. Allocated memory is still 176.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:14:43,695 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 176.2MB. Free memory is still 149.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 266.41ms. Allocated memory is still 176.2MB. Free memory was 140.0MB in the beginning and 126.8MB in the end (delta: 13.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.79ms. Allocated memory is still 176.2MB. Free memory was 126.8MB in the beginning and 121.1MB in the end (delta: 5.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.37ms. Allocated memory is still 176.2MB. Free memory was 121.1MB in the beginning and 117.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 568.04ms. Allocated memory is still 176.2MB. Free memory was 117.5MB in the beginning and 88.8MB in the end (delta: 28.7MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1598.66ms. Allocated memory is still 176.2MB. Free memory was 88.1MB in the beginning and 85.9MB in the end (delta: 2.3MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * Witness Printer took 3.91ms. Allocated memory is still 176.2MB. Free memory is still 85.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet4 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet6 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet9 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet15 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet16 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 5); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (5 - 1); [L32] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 4); [L33] const SORT_8 msb_SORT_8 = (SORT_8)1 << (4 - 1); [L35] const SORT_4 var_5 = 1; [L36] const SORT_8 var_9 = 2; [L37] const SORT_1 var_15 = 1; [L38] const SORT_4 var_19 = 5; [L39] const SORT_4 var_22 = 7; [L40] const SORT_4 var_26 = 11; [L41] const SORT_4 var_29 = 3; [L42] const SORT_8 var_30 = 1; [L43] const SORT_8 var_37 = 5; [L45] SORT_1 input_2; [L46] SORT_1 input_3; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L48] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_6=0, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L49] SORT_4 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L50] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=0, state_6=0, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L50] SORT_4 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L51] EXPR __VERIFIER_nondet_uchar() & mask_SORT_4 VAL [mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=0, state_23=0, state_6=0, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L51] SORT_4 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L53] SORT_4 init_7_arg_1 = var_5; [L54] state_6 = init_7_arg_1 [L55] SORT_4 init_21_arg_1 = var_19; [L56] state_20 = init_21_arg_1 [L57] SORT_4 init_24_arg_1 = var_22; [L58] state_23 = init_24_arg_1 [L59] SORT_4 init_28_arg_1 = var_26; [L60] state_27 = init_28_arg_1 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L63] input_2 = __VERIFIER_nondet_uchar() [L64] input_3 = __VERIFIER_nondet_uchar() [L67] SORT_8 var_10_arg_0 = var_9; VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_10_arg_0=2, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L68] EXPR var_10_arg_0 & mask_SORT_8 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_10_arg_0=2, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L68] var_10_arg_0 = var_10_arg_0 & mask_SORT_8 [L69] SORT_4 var_10 = var_10_arg_0; [L70] SORT_4 var_11_arg_0 = state_6; [L71] SORT_4 var_11_arg_1 = var_10; [L72] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L73] SORT_1 var_12_arg_0 = var_11; [L74] SORT_1 var_12 = ~var_12_arg_0; [L75] SORT_1 var_16_arg_0 = var_12; [L76] SORT_1 var_16 = ~var_16_arg_0; [L77] SORT_1 var_17_arg_0 = var_15; [L78] SORT_1 var_17_arg_1 = var_16; VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_10=1, var_10_arg_0=1, var_11=1, var_11_arg_0=1, var_11_arg_1=1, var_12=254, var_12_arg_0=1, var_15=1, var_16=1, var_16_arg_0=254, var_17_arg_0=1, var_17_arg_1=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L79] EXPR var_17_arg_0 & var_17_arg_1 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_10=1, var_10_arg_0=1, var_11=1, var_11_arg_0=1, var_11_arg_1=1, var_12=254, var_12_arg_0=1, var_15=1, var_16=1, var_16_arg_0=254, var_17_arg_0=1, var_17_arg_1=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L79] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L80] EXPR var_17 & mask_SORT_1 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_10=1, var_10_arg_0=1, var_11=1, var_11_arg_0=1, var_11_arg_1=1, var_12=254, var_12_arg_0=1, var_15=1, var_16=1, var_16_arg_0=254, var_17=1, var_17_arg_0=1, var_17_arg_1=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L80] var_17 = var_17 & mask_SORT_1 [L81] SORT_1 bad_18_arg_0 = var_17; [L82] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 183 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 183 mSDsluCounter, 612 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 353 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 80 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 259 mSDtfsCounter, 80 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=3, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 27 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 99 NumberOfCodeBlocks, 99 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 00:14:43,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya --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 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:14:45,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:14:45,696 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2023-11-29 00:14:45,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:14:45,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:14:45,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:14:45,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:14:45,748 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:14:45,749 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:14:45,750 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:14:45,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:14:45,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:14:45,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:14:45,752 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:14:45,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:14:45,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:14:45,754 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:14:45,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:14:45,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:14:45,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:14:45,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:14:45,757 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:14:45,757 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:14:45,758 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:14:45,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:14:45,759 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:14:45,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:14:45,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:14:45,760 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:14:45,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:14:45,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:45,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:14:45,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:14:45,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:14:45,763 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:14:45,763 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:14:45,764 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:14:45,764 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:14:45,764 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:14:45,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:14:45,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:14:45,765 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:14:45,766 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d158962260c30d804a065123fd6610d4547bfb1f0024709f9d294e632350d48 [2023-11-29 00:14:46,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:14:46,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:14:46,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:14:46,075 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:14:46,075 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:14:46,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2023-11-29 00:14:48,855 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:14:49,044 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:14:49,045 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2023-11-29 00:14:49,054 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/b8bd25841/4000156d82b9488ebd470f8ede3de0f0/FLAG0ce8cd16f [2023-11-29 00:14:49,067 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/data/b8bd25841/4000156d82b9488ebd470f8ede3de0f0 [2023-11-29 00:14:49,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:14:49,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:14:49,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:49,073 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:14:49,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:14:49,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b4d644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49, skipping insertion in model container [2023-11-29 00:14:49,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,102 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:14:49,226 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2023-11-29 00:14:49,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:49,283 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:14:49,293 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_9f9f379a-9275-4acb-9122-fa82cf06f35d/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1246,1259] [2023-11-29 00:14:49,319 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:14:49,331 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:14:49,332 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49 WrapperNode [2023-11-29 00:14:49,332 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:14:49,333 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:49,333 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:14:49,333 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:14:49,339 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,371 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 125 [2023-11-29 00:14:49,371 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:14:49,372 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:14:49,372 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:14:49,373 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:14:49,381 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,386 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,400 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 00:14:49,401 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,411 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,413 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,418 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:14:49,419 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:14:49,419 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:14:49,419 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:14:49,420 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (1/1) ... [2023-11-29 00:14:49,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:14:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:49,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:14:49,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:14:49,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:14:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:14:49,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:14:49,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:14:49,583 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:14:49,586 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:14:49,768 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:14:49,803 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:14:49,804 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 00:14:49,804 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:49 BoogieIcfgContainer [2023-11-29 00:14:49,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:14:49,807 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:14:49,807 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:14:49,810 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:14:49,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:14:49" (1/3) ... [2023-11-29 00:14:49,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a146f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:49, skipping insertion in model container [2023-11-29 00:14:49,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:14:49" (2/3) ... [2023-11-29 00:14:49,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a146f2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:14:49, skipping insertion in model container [2023-11-29 00:14:49,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:14:49" (3/3) ... [2023-11-29 00:14:49,812 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2023-11-29 00:14:49,826 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:14:49,827 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 00:14:49,864 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:14:49,870 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;@2808f8d6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:14:49,870 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 00:14:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-29 00:14:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:14:49,878 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:49,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:14:49,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:49,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:49,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-29 00:14:49,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:49,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710629863] [2023-11-29 00:14:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:49,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:49,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:49,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:49,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 00:14:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:50,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:14:50,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:50,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:14:50,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:50,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710629863] [2023-11-29 00:14:50,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710629863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:50,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:50,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314580921] [2023-11-29 00:14:50,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:50,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:50,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:50,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:50,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:50,279 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-29 00:14:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:50,337 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-29 00:14:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-29 00:14:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:50,347 INFO L225 Difference]: With dead ends: 16 [2023-11-29 00:14:50,347 INFO L226 Difference]: Without dead ends: 9 [2023-11-29 00:14:50,350 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 [2023-11-29 00:14:50,354 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:50,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:14:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-29 00:14:50,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-29 00:14:50,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-11-29 00:14:50,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-29 00:14:50,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-29 00:14:50,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:50,384 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-29 00:14:50,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2023-11-29 00:14:50,384 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-29 00:14:50,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:14:50,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:50,385 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-29 00:14:50,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:50,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:50,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:50,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:50,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-29 00:14:50,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:50,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229437330] [2023-11-29 00:14:50,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:50,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:50,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:50,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:50,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 00:14:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:50,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 00:14:50,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:50,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:50,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:51,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:51,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229437330] [2023-11-29 00:14:51,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229437330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:51,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:51,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 00:14:51,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441351383] [2023-11-29 00:14:51,280 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:51,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:14:51,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:51,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:14:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:14:51,283 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-29 00:14:51,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:51,450 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-11-29 00:14:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:14:51,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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 7 [2023-11-29 00:14:51,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:51,451 INFO L225 Difference]: With dead ends: 14 [2023-11-29 00:14:51,451 INFO L226 Difference]: Without dead ends: 12 [2023-11-29 00:14:51,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:14:51,453 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 8 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:51,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:51,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-11-29 00:14:51,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-11-29 00:14:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-11-29 00:14:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-11-29 00:14:51,459 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-11-29 00:14:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:51,459 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-11-29 00:14:51,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.625) internal successors, (13), 7 states have internal predecessors, (13), 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) [2023-11-29 00:14:51,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-11-29 00:14:51,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-29 00:14:51,460 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:51,460 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-11-29 00:14:51,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 00:14:51,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:51,661 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:51,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:51,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-11-29 00:14:51,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:51,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672394469] [2023-11-29 00:14:51,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:14:51,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:51,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:51,664 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:51,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 00:14:51,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:14:51,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:51,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-29 00:14:51,769 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:52,478 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:52,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:53,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:53,449 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:53,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672394469] [2023-11-29 00:14:53,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672394469] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:53,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:53,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:14:53,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626486018] [2023-11-29 00:14:53,450 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:53,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:14:53,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:53,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:14:53,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:14:53,452 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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) [2023-11-29 00:14:53,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:53,928 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2023-11-29 00:14:53,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:14:53,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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 10 [2023-11-29 00:14:53,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:53,930 INFO L225 Difference]: With dead ends: 17 [2023-11-29 00:14:53,930 INFO L226 Difference]: Without dead ends: 15 [2023-11-29 00:14:53,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:14:53,932 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:53,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 15 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:14:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-29 00:14:53,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2023-11-29 00:14:53,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2023-11-29 00:14:53,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2023-11-29 00:14:53,941 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2023-11-29 00:14:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:53,941 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2023-11-29 00:14:53,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 9 states have internal predecessors, (19), 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) [2023-11-29 00:14:53,942 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2023-11-29 00:14:53,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 00:14:53,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:53,943 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1] [2023-11-29 00:14:53,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 00:14:54,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:54,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:54,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:54,144 INFO L85 PathProgramCache]: Analyzing trace with hash -57678563, now seen corresponding path program 3 times [2023-11-29 00:14:54,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:54,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726966394] [2023-11-29 00:14:54,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:14:54,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:54,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:54,147 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:54,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 00:14:54,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-29 00:14:54,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:54,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 00:14:54,280 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:54,926 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:54,926 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:55,784 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:55,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726966394] [2023-11-29 00:14:55,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726966394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:55,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:55,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2023-11-29 00:14:55,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687477358] [2023-11-29 00:14:55,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:55,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:14:55,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:55,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:14:55,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:14:55,788 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-11-29 00:14:56,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:56,049 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2023-11-29 00:14:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:14:56,050 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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 13 [2023-11-29 00:14:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:56,050 INFO L225 Difference]: With dead ends: 20 [2023-11-29 00:14:56,050 INFO L226 Difference]: Without dead ends: 18 [2023-11-29 00:14:56,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:14:56,052 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 11 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:56,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 19 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:56,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-29 00:14:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2023-11-29 00:14:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 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) [2023-11-29 00:14:56,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2023-11-29 00:14:56,058 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2023-11-29 00:14:56,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:56,058 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2023-11-29 00:14:56,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 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) [2023-11-29 00:14:56,058 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2023-11-29 00:14:56,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:14:56,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:56,059 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1] [2023-11-29 00:14:56,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 00:14:56,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:56,260 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:56,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:56,260 INFO L85 PathProgramCache]: Analyzing trace with hash -310375345, now seen corresponding path program 4 times [2023-11-29 00:14:56,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:56,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711496283] [2023-11-29 00:14:56,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:14:56,261 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:56,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:56,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:56,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 00:14:56,403 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:14:56,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:56,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-29 00:14:56,413 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:14:56,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:57,431 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:14:57,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711496283] [2023-11-29 00:14:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711496283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:57,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2023-11-29 00:14:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159643137] [2023-11-29 00:14:57,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 00:14:57,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:14:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 00:14:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:14:57,437 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 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) [2023-11-29 00:14:57,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:57,696 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-11-29 00:14:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:14:57,697 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 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 16 [2023-11-29 00:14:57,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:57,697 INFO L225 Difference]: With dead ends: 27 [2023-11-29 00:14:57,698 INFO L226 Difference]: Without dead ends: 25 [2023-11-29 00:14:57,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:14:57,699 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:57,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 29 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:57,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-29 00:14:57,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2023-11-29 00:14:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 22 states have internal predecessors, (24), 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) [2023-11-29 00:14:57,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-29 00:14:57,704 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2023-11-29 00:14:57,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:57,704 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-29 00:14:57,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 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) [2023-11-29 00:14:57,705 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-29 00:14:57,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 00:14:57,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:57,705 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1] [2023-11-29 00:14:57,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 00:14:57,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:57,906 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:14:57,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash 677461981, now seen corresponding path program 5 times [2023-11-29 00:14:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:14:57,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557889283] [2023-11-29 00:14:57,907 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:14:57,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:14:57,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:14:57,908 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:14:57,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 00:14:58,040 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:14:58,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:14:58,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 162 conjunts are in the unsatisfiable core [2023-11-29 00:14:58,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:59,110 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:59,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:27,293 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:27,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557889283] [2023-11-29 00:15:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557889283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:27,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-29 00:15:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131334904] [2023-11-29 00:15:27,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:27,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 00:15:27,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:27,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 00:15:27,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:15:27,295 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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) [2023-11-29 00:15:28,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:28,128 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2023-11-29 00:15:28,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:15:28,129 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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 19 [2023-11-29 00:15:28,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:28,129 INFO L225 Difference]: With dead ends: 32 [2023-11-29 00:15:28,130 INFO L226 Difference]: Without dead ends: 30 [2023-11-29 00:15:28,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:15:28,131 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:28,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 33 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:15:28,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-29 00:15:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2023-11-29 00:15:28,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 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) [2023-11-29 00:15:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-11-29 00:15:28,137 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 19 [2023-11-29 00:15:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:28,137 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-11-29 00:15:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 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) [2023-11-29 00:15:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-11-29 00:15:28,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:15:28,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:28,138 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1] [2023-11-29 00:15:28,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 00:15:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:15:28,339 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:28,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 223328655, now seen corresponding path program 6 times [2023-11-29 00:15:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79720987] [2023-11-29 00:15:28,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:15:28,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:15:28,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:28,342 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:15:28,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:15:28,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-29 00:15:28,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:15:28,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 00:15:28,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:29,247 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:29,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:15:30,667 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:30,668 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:15:30,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [79720987] [2023-11-29 00:15:30,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [79720987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:15:30,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:15:30,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-11-29 00:15:30,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379739250] [2023-11-29 00:15:30,669 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:15:30,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 00:15:30,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:15:30,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 00:15:30,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:15:30,670 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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) [2023-11-29 00:15:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:15:34,335 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-11-29 00:15:34,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 00:15:34,336 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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 22 [2023-11-29 00:15:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:15:34,337 INFO L225 Difference]: With dead ends: 53 [2023-11-29 00:15:34,337 INFO L226 Difference]: Without dead ends: 51 [2023-11-29 00:15:34,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=460, Invalid=1346, Unknown=0, NotChecked=0, Total=1806 [2023-11-29 00:15:34,339 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 39 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:15:34,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 19 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:15:34,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-29 00:15:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-11-29 00:15:34,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 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) [2023-11-29 00:15:34,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2023-11-29 00:15:34,353 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 22 [2023-11-29 00:15:34,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:15:34,353 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2023-11-29 00:15:34,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 17 states have internal predecessors, (43), 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) [2023-11-29 00:15:34,353 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2023-11-29 00:15:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:15:34,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:15:34,354 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1] [2023-11-29 00:15:34,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:15:34,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:15:34,555 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 00:15:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:15:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1097789809, now seen corresponding path program 7 times [2023-11-29 00:15:34,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:15:34,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942319275] [2023-11-29 00:15:34,556 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:15:34,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:15:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:15:34,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 00:15:34,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f9f379a-9275-4acb-9122-fa82cf06f35d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:15:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:15:35,477 WARN L260 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 419 conjunts are in the unsatisfiable core [2023-11-29 00:15:35,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:15:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:15:38,841 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:16:49,977 WARN L293 SmtUtils]: Spent 10.17s on a formula simplification that was a NOOP. DAG size: 671 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:19:53,244 WARN L293 SmtUtils]: Spent 34.67s on a formula simplification that was a NOOP. DAG size: 933 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 00:27:31,479 WARN L293 SmtUtils]: Spent 57.84s on a formula simplification that was a NOOP. DAG size: 1103 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)