./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU --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 716547a7fbdfceb31d193aabba3879422257a24dd737c70a32b939b695035c3c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:02,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:02,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-31 22:19:02,426 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:02,427 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:02,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:02,460 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:02,460 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:02,461 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:02,461 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:02,462 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:02,462 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:02,464 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:02,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:02,468 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:02,468 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:02,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:02,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:02,470 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:02,470 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:02,474 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:02,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:02,475 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:02,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:02,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:02,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:02,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:02,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:02,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:02,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:02,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:02,478 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:02,480 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:02,480 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:02,481 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:02,481 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:02,482 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:02,482 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:02,483 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:02,483 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 716547a7fbdfceb31d193aabba3879422257a24dd737c70a32b939b695035c3c [2024-10-31 22:19:02,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:02,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:02,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:02,848 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:02,849 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:02,850 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c Unable to find full path for "g++" [2024-10-31 22:19:04,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:05,192 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:05,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c [2024-10-31 22:19:05,201 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/fd70711b9/8a9a93b887c54a80b06cd106def6214f/FLAG57c1775d2 [2024-10-31 22:19:05,215 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/fd70711b9/8a9a93b887c54a80b06cd106def6214f [2024-10-31 22:19:05,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:05,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:05,223 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:05,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:05,232 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:05,233 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,236 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fc282f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05, skipping insertion in model container [2024-10-31 22:19:05,236 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,274 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:05,488 WARN L251 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c[1245,1258] [2024-10-31 22:19:05,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:05,571 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:05,582 WARN L251 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c[1245,1258] [2024-10-31 22:19:05,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:05,643 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:05,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05 WrapperNode [2024-10-31 22:19:05,644 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:05,645 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:05,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:05,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:05,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,665 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,728 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 296 [2024-10-31 22:19:05,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:05,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:05,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:05,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:05,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,751 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,777 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-31 22:19:05,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,803 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,808 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,813 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,816 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,824 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:05,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:05,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:05,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:05,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (1/1) ... [2024-10-31 22:19:05,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:05,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:05,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:05,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:19:05,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:05,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:06,030 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:06,034 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:06,782 INFO L? ?]: Removed 128 outVars from TransFormulas that were not future-live. [2024-10-31 22:19:06,783 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:06,812 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:06,812 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:19:06,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:06 BoogieIcfgContainer [2024-10-31 22:19:06,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:06,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:06,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:06,828 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:06,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:05" (1/3) ... [2024-10-31 22:19:06,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b338bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:06, skipping insertion in model container [2024-10-31 22:19:06,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:05" (2/3) ... [2024-10-31 22:19:06,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b338bae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:06, skipping insertion in model container [2024-10-31 22:19:06,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:06" (3/3) ... [2024-10-31 22:19:06,832 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal58.c [2024-10-31 22:19:06,854 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:06,854 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:19:06,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:06,937 INFO L333 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, 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;@67b924f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:06,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:19:06,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 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) [2024-10-31 22:19:06,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-31 22:19:06,950 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:06,950 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:06,951 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:06,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:06,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2017394231, now seen corresponding path program 1 times [2024-10-31 22:19:06,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:06,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239428757] [2024-10-31 22:19:06,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:06,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:07,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:07,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:07,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239428757] [2024-10-31 22:19:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239428757] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:07,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:07,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:07,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661451742] [2024-10-31 22:19:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:07,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:07,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:07,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:07,757 INFO L87 Difference]: Start difference. First operand has 66 states, 64 states have (on average 1.484375) internal successors, (95), 65 states have internal predecessors, (95), 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 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-10-31 22:19:07,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:07,808 INFO L93 Difference]: Finished difference Result 113 states and 165 transitions. [2024-10-31 22:19:07,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:07,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-10-31 22:19:07,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:07,819 INFO L225 Difference]: With dead ends: 113 [2024-10-31 22:19:07,819 INFO L226 Difference]: Without dead ends: 65 [2024-10-31 22:19:07,823 INFO L431 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 [2024-10-31 22:19:07,826 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 261 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 [2024-10-31 22:19:07,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:07,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-10-31 22:19:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-10-31 22:19:07,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.453125) internal successors, (93), 64 states have internal predecessors, (93), 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) [2024-10-31 22:19:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2024-10-31 22:19:07,876 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2024-10-31 22:19:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:07,877 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2024-10-31 22:19:07,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-10-31 22:19:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2024-10-31 22:19:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-31 22:19:07,881 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:07,881 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:07,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:19:07,881 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:07,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1883592983, now seen corresponding path program 1 times [2024-10-31 22:19:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:07,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867968877] [2024-10-31 22:19:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:08,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:08,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867968877] [2024-10-31 22:19:08,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867968877] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:08,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:08,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:08,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362215111] [2024-10-31 22:19:08,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:08,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:08,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:08,190 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-10-31 22:19:08,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:08,246 INFO L93 Difference]: Finished difference Result 114 states and 163 transitions. [2024-10-31 22:19:08,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:08,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 28 [2024-10-31 22:19:08,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:08,248 INFO L225 Difference]: With dead ends: 114 [2024-10-31 22:19:08,248 INFO L226 Difference]: Without dead ends: 67 [2024-10-31 22:19:08,248 INFO L431 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 [2024-10-31 22:19:08,250 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 0 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 257 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 [2024-10-31 22:19:08,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 257 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-10-31 22:19:08,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2024-10-31 22:19:08,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4393939393939394) internal successors, (95), 66 states have internal predecessors, (95), 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) [2024-10-31 22:19:08,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 95 transitions. [2024-10-31 22:19:08,266 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 95 transitions. Word has length 28 [2024-10-31 22:19:08,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:08,267 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 95 transitions. [2024-10-31 22:19:08,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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) [2024-10-31 22:19:08,267 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 95 transitions. [2024-10-31 22:19:08,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-10-31 22:19:08,268 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:08,270 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:08,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:19:08,271 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:08,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash 640193872, now seen corresponding path program 1 times [2024-10-31 22:19:08,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:08,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543554374] [2024-10-31 22:19:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:08,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:08,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:08,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:08,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543554374] [2024-10-31 22:19:08,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543554374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:08,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:08,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:19:08,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196338974] [2024-10-31 22:19:08,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:08,672 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:08,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:08,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:08,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:19:08,674 INFO L87 Difference]: Start difference. First operand 67 states and 95 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2024-10-31 22:19:08,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:08,802 INFO L93 Difference]: Finished difference Result 153 states and 215 transitions. [2024-10-31 22:19:08,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:19:08,803 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 29 [2024-10-31 22:19:08,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:08,804 INFO L225 Difference]: With dead ends: 153 [2024-10-31 22:19:08,805 INFO L226 Difference]: Without dead ends: 104 [2024-10-31 22:19:08,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:08,810 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 179 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:08,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 326 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-10-31 22:19:08,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 85. [2024-10-31 22:19:08,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 84 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:08,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2024-10-31 22:19:08,831 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 29 [2024-10-31 22:19:08,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:08,831 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2024-10-31 22:19:08,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2024-10-31 22:19:08,832 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2024-10-31 22:19:08,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:19:08,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:08,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:08,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:19:08,836 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:08,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash -719939504, now seen corresponding path program 1 times [2024-10-31 22:19:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791888152] [2024-10-31 22:19:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:08,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:09,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:09,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791888152] [2024-10-31 22:19:09,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791888152] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:09,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:09,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-31 22:19:09,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054994970] [2024-10-31 22:19:09,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:09,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:19:09,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:09,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:19:09,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:09,183 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2024-10-31 22:19:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:09,400 INFO L93 Difference]: Finished difference Result 155 states and 217 transitions. [2024-10-31 22:19:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:19:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) Word has length 30 [2024-10-31 22:19:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:09,402 INFO L225 Difference]: With dead ends: 155 [2024-10-31 22:19:09,402 INFO L226 Difference]: Without dead ends: 106 [2024-10-31 22:19:09,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:19:09,404 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 182 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:09,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 476 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-31 22:19:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2024-10-31 22:19:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.4367816091954022) internal successors, (125), 87 states have internal predecessors, (125), 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) [2024-10-31 22:19:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 125 transitions. [2024-10-31 22:19:09,412 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 125 transitions. Word has length 30 [2024-10-31 22:19:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:09,412 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 125 transitions. [2024-10-31 22:19:09,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 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) [2024-10-31 22:19:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 125 transitions. [2024-10-31 22:19:09,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 22:19:09,413 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:09,413 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:09,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:19:09,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:09,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:09,414 INFO L85 PathProgramCache]: Analyzing trace with hash -523941715, now seen corresponding path program 1 times [2024-10-31 22:19:09,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:09,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850238828] [2024-10-31 22:19:09,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:09,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:10,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850238828] [2024-10-31 22:19:10,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850238828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:10,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:10,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-10-31 22:19:10,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599694990] [2024-10-31 22:19:10,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:10,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-31 22:19:10,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:10,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-31 22:19:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:19:10,042 INFO L87 Difference]: Start difference. First operand 88 states and 125 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2024-10-31 22:19:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:10,324 INFO L93 Difference]: Finished difference Result 155 states and 216 transitions. [2024-10-31 22:19:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:19:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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 31 [2024-10-31 22:19:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:10,326 INFO L225 Difference]: With dead ends: 155 [2024-10-31 22:19:10,327 INFO L226 Difference]: Without dead ends: 106 [2024-10-31 22:19:10,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:19:10,328 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 177 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:10,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 458 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-31 22:19:10,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 92. [2024-10-31 22:19:10,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4285714285714286) internal successors, (130), 91 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:10,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 130 transitions. [2024-10-31 22:19:10,337 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 130 transitions. Word has length 31 [2024-10-31 22:19:10,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:10,337 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 130 transitions. [2024-10-31 22:19:10,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 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) [2024-10-31 22:19:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 130 transitions. [2024-10-31 22:19:10,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-31 22:19:10,339 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:10,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:10,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:19:10,340 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:10,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:10,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1792746033, now seen corresponding path program 1 times [2024-10-31 22:19:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:10,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14188866] [2024-10-31 22:19:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:10,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:10,406 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:19:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:10,480 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:19:10,480 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:19:10,483 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:19:10,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:19:10,490 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2024-10-31 22:19:10,542 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:19:10,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:19:10 BoogieIcfgContainer [2024-10-31 22:19:10,548 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:19:10,549 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:19:10,551 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:19:10,551 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:19:10,551 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:06" (3/4) ... [2024-10-31 22:19:10,554 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:19:10,556 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:19:10,557 INFO L158 Benchmark]: Toolchain (without parser) took 5335.98ms. Allocated memory was 146.8MB in the beginning and 213.9MB in the end (delta: 67.1MB). Free memory was 103.5MB in the beginning and 108.9MB in the end (delta: -5.4MB). Peak memory consumption was 62.9MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,557 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:19:10,558 INFO L158 Benchmark]: CACSL2BoogieTranslator took 421.80ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 86.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.51ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 80.4MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,560 INFO L158 Benchmark]: Boogie Preprocessor took 94.81ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 75.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,561 INFO L158 Benchmark]: RCFGBuilder took 991.45ms. Allocated memory was 146.8MB in the beginning and 213.9MB in the end (delta: 67.1MB). Free memory was 75.7MB in the beginning and 169.1MB in the end (delta: -93.4MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,561 INFO L158 Benchmark]: TraceAbstraction took 3728.52ms. Allocated memory is still 213.9MB. Free memory was 168.0MB in the beginning and 108.9MB in the end (delta: 59.1MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:10,562 INFO L158 Benchmark]: Witness Printer took 7.52ms. Allocated memory is still 213.9MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:19:10,564 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 146.8MB. Free memory is still 118.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 421.80ms. Allocated memory is still 146.8MB. Free memory was 103.5MB in the beginning and 86.7MB in the end (delta: 16.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.51ms. Allocated memory is still 146.8MB. Free memory was 86.7MB in the beginning and 80.4MB in the end (delta: 6.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.81ms. Allocated memory is still 146.8MB. Free memory was 80.4MB in the beginning and 75.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 991.45ms. Allocated memory was 146.8MB in the beginning and 213.9MB in the end (delta: 67.1MB). Free memory was 75.7MB in the beginning and 169.1MB in the end (delta: -93.4MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3728.52ms. Allocated memory is still 213.9MB. Free memory was 168.0MB in the beginning and 108.9MB in the end (delta: 59.1MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. * Witness Printer took 7.52ms. Allocated memory is still 213.9MB. Free memory is still 108.9MB. There was no memory consumed. Max. memory is 16.1GB. * 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 bitwiseOr at line 96, overapproximation of bitwiseAnd at line 101. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 3); [L30] const SORT_5 msb_SORT_5 = (SORT_5)1 << (3 - 1); [L32] const SORT_1 var_11 = 0; [L33] const SORT_5 var_15 = 0; [L34] const SORT_5 var_21 = 4; [L35] const SORT_1 var_31 = 1; [L37] SORT_1 input_2; [L38] SORT_1 input_3; [L39] SORT_1 input_4; [L40] SORT_5 input_6; [L41] SORT_5 input_7; [L42] SORT_1 input_8; [L43] SORT_5 input_9; [L44] SORT_5 input_10; [L46] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=7, var_11=0, var_15=0, var_21=4, var_31=1] [L46] SORT_1 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=7, var_11=0, var_15=0, var_21=4, var_31=1] [L47] SORT_5 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L48] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=7, var_11=0, var_15=0, var_21=4, var_31=1] [L48] SORT_1 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L49] EXPR __VERIFIER_nondet_uchar() & mask_SORT_5 VAL [mask_SORT_1=1, mask_SORT_5=7, var_11=0, var_15=0, var_21=4, var_31=1] [L49] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L51] SORT_1 init_13_arg_1 = var_11; [L52] state_12 = init_13_arg_1 [L53] SORT_5 init_17_arg_1 = var_15; [L54] state_16 = init_17_arg_1 [L55] SORT_1 init_19_arg_1 = var_11; [L56] state_18 = init_19_arg_1 [L57] SORT_5 init_24_arg_1 = var_15; [L58] state_23 = init_24_arg_1 VAL [mask_SORT_1=1, mask_SORT_5=7, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=4, var_31=1] [L61] input_2 = __VERIFIER_nondet_uchar() [L62] EXPR input_2 & mask_SORT_1 VAL [mask_SORT_1=1, mask_SORT_5=7, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=4, var_31=1] [L62] input_2 = input_2 & mask_SORT_1 [L63] input_3 = __VERIFIER_nondet_uchar() [L64] EXPR input_3 & mask_SORT_1 VAL [input_2=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, state_16=0, state_18=0, state_23=0, var_11=0, var_15=0, var_21=4, var_31=1] [L64] input_3 = input_3 & mask_SORT_1 [L65] input_4 = __VERIFIER_nondet_uchar() [L66] input_6 = __VERIFIER_nondet_uchar() [L67] input_7 = __VERIFIER_nondet_uchar() [L68] input_8 = __VERIFIER_nondet_uchar() [L69] input_9 = __VERIFIER_nondet_uchar() [L70] input_10 = __VERIFIER_nondet_uchar() [L73] SORT_1 var_14_arg_0 = state_12; [L74] SORT_1 var_14 = ~var_14_arg_0; [L75] SORT_1 var_20_arg_0 = state_18; [L76] SORT_5 var_20_arg_1 = state_16; [L77] SORT_5 var_20_arg_2 = input_7; [L78] SORT_5 var_20 = var_20_arg_0 ? var_20_arg_1 : var_20_arg_2; VAL [input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, state_18=0, state_23=0, var_11=0, var_14=-1, var_15=0, var_20=0, var_21=4, var_31=1] [L79] EXPR var_20 & mask_SORT_5 VAL [input_2=0, input_3=0, input_7=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, state_18=0, state_23=0, var_11=0, var_14=-1, var_15=0, var_21=4, var_31=1] [L79] var_20 = var_20 & mask_SORT_5 [L80] SORT_5 var_22_arg_0 = var_20; [L81] SORT_5 var_22_arg_1 = var_21; [L82] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L83] SORT_1 var_25_arg_0 = state_18; [L84] SORT_5 var_25_arg_1 = state_23; [L85] SORT_5 var_25_arg_2 = input_7; [L86] SORT_5 var_25 = var_25_arg_0 ? var_25_arg_1 : var_25_arg_2; VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_14=-1, var_15=0, var_20=0, var_21=4, var_22=0, var_25=0, var_31=1] [L87] EXPR var_25 & mask_SORT_5 VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_14=-1, var_15=0, var_20=0, var_21=4, var_22=0, var_31=1] [L87] var_25 = var_25 & mask_SORT_5 [L88] SORT_5 var_26_arg_0 = var_25; [L89] SORT_5 var_26_arg_1 = var_21; [L90] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L91] SORT_1 var_27_arg_0 = var_22; [L92] SORT_1 var_27_arg_1 = var_26; [L93] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L94] SORT_1 var_28_arg_0 = var_14; [L95] SORT_1 var_28_arg_1 = var_27; VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_15=0, var_20=0, var_21=4, var_25=0, var_28_arg_0=-1, var_28_arg_1=1, var_31=1] [L96] EXPR var_28_arg_0 | var_28_arg_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_15=0, var_20=0, var_21=4, var_25=0, var_31=1] [L96] SORT_1 var_28 = var_28_arg_0 | var_28_arg_1; [L97] SORT_1 var_32_arg_0 = var_28; [L98] SORT_1 var_32 = ~var_32_arg_0; [L99] SORT_1 var_33_arg_0 = var_31; [L100] SORT_1 var_33_arg_1 = var_32; VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_15=0, var_20=0, var_21=4, var_25=0, var_31=1, var_33_arg_0=1, var_33_arg_1=-1] [L101] EXPR var_33_arg_0 & var_33_arg_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_15=0, var_20=0, var_21=4, var_25=0, var_31=1] [L101] SORT_1 var_33 = var_33_arg_0 & var_33_arg_1; [L102] EXPR var_33 & mask_SORT_1 VAL [input_2=0, input_3=0, mask_SORT_1=1, mask_SORT_5=7, state_12=0, var_11=0, var_15=0, var_20=0, var_21=4, var_25=0, var_31=1] [L102] var_33 = var_33 & mask_SORT_1 [L103] SORT_1 bad_34_arg_0 = var_33; [L104] CALL __VERIFIER_assert(!(bad_34_arg_0)) [L21] COND TRUE !(cond) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 538 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 538 mSDsluCounter, 1778 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1363 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 223 IncrementalHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 415 mSDtfsCounter, 223 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=5, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 51 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 486 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2024-10-31 22:19:10,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU --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 716547a7fbdfceb31d193aabba3879422257a24dd737c70a32b939b695035c3c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:13,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:13,239 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-31 22:19:13,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:13,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:13,286 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:13,287 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:13,287 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:13,288 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:13,288 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:13,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:13,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:13,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:13,295 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:13,295 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:13,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:13,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:13,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:13,297 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:13,297 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:13,297 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:13,299 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:19:13,300 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:19:13,300 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:13,301 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:19:13,301 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:13,301 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:13,302 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:13,302 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:13,302 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:13,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:13,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:13,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:13,304 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:13,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:13,305 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:19:13,306 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:19:13,307 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:13,307 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:13,308 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:13,308 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:13,309 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:19:13,309 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 716547a7fbdfceb31d193aabba3879422257a24dd737c70a32b939b695035c3c [2024-10-31 22:19:13,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:13,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:13,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:13,744 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:13,744 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:13,746 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c Unable to find full path for "g++" [2024-10-31 22:19:15,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:16,237 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:16,238 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c [2024-10-31 22:19:16,253 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/bb9c91c8f/72b9b4c9c42f44a1aa689a9221a5fb72/FLAG0c12e38ef [2024-10-31 22:19:16,273 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/data/bb9c91c8f/72b9b4c9c42f44a1aa689a9221a5fb72 [2024-10-31 22:19:16,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:16,280 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:16,283 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:16,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:16,291 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:16,291 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,293 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30e07ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16, skipping insertion in model container [2024-10-31 22:19:16,295 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:16,569 WARN L251 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c[1245,1258] [2024-10-31 22:19:16,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:16,688 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:16,707 WARN L251 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_a35ed8f4-e357-4d11-acc8-22656a28cb68/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal58.c[1245,1258] [2024-10-31 22:19:16,770 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:16,791 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:16,791 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16 WrapperNode [2024-10-31 22:19:16,791 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:16,792 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:16,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:16,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:16,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,840 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 184 [2024-10-31 22:19:16,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:16,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:16,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:16,842 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:16,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,863 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,913 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-10-31 22:19:16,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,914 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,929 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:16,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:16,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:16,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:16,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:16,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:17,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:17,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:19:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-31 22:19:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:17,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:17,189 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:17,192 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:17,562 INFO L? ?]: Removed 47 outVars from TransFormulas that were not future-live. [2024-10-31 22:19:17,562 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:17,577 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:17,578 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:19:17,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17 BoogieIcfgContainer [2024-10-31 22:19:17,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:17,580 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:17,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:17,584 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:17,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:16" (1/3) ... [2024-10-31 22:19:17,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec203cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (2/3) ... [2024-10-31 22:19:17,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ec203cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17" (3/3) ... [2024-10-31 22:19:17,590 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal58.c [2024-10-31 22:19:17,611 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:17,612 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:19:17,742 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:17,758 INFO L333 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, 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;@30c4240f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:17,759 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:19:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) [2024-10-31 22:19:17,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-31 22:19:17,779 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:17,780 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-31 22:19:17,781 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:17,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times [2024-10-31 22:19:17,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:19:17,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121938277] [2024-10-31 22:19:17,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:17,813 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 [2024-10-31 22:19:17,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:19:17,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:19:17,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:18,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,047 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-31 22:19:18,057 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:18,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:18,308 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:19:18,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121938277] [2024-10-31 22:19:18,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121938277] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:18,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:18,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:18,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173822779] [2024-10-31 22:19:18,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:18,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:18,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:19:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:18,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:18,351 INFO L87 Difference]: Start difference. First operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:19:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:18,433 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2024-10-31 22:19:18,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:18,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2024-10-31 22:19:18,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:18,444 INFO L225 Difference]: With dead ends: 18 [2024-10-31 22:19:18,445 INFO L226 Difference]: Without dead ends: 10 [2024-10-31 22:19:18,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:19:18,460 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:18,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:19:18,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-10-31 22:19:18,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2024-10-31 22:19:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2024-10-31 22:19:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2024-10-31 22:19:18,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2024-10-31 22:19:18,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:18,496 INFO L471 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2024-10-31 22:19:18,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2024-10-31 22:19:18,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2024-10-31 22:19:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:19:18,497 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:18,497 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:18,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:18,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:18,701 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:18,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:18,702 INFO L85 PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times [2024-10-31 22:19:18,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:19:18,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143392028] [2024-10-31 22:19:18,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:18,704 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 [2024-10-31 22:19:18,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:19:18,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:19:18,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-31 22:19:18,913 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:19,415 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:21,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:21,480 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:19:21,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143392028] [2024-10-31 22:19:21,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143392028] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:21,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:19:21,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-10-31 22:19:21,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655760520] [2024-10-31 22:19:21,481 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:21,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:19:21,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:19:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:19:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:19:21,486 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-10-31 22:19:21,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:21,657 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2024-10-31 22:19:21,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:19:21,659 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) Word has length 8 [2024-10-31 22:19:21,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:21,659 INFO L225 Difference]: With dead ends: 14 [2024-10-31 22:19:21,659 INFO L226 Difference]: Without dead ends: 12 [2024-10-31 22:19:21,660 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-10-31 22:19:21,661 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:21,661 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:19:21,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-10-31 22:19:21,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-10-31 22:19:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-10-31 22:19:21,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-10-31 22:19:21,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2024-10-31 22:19:21,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:21,670 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-10-31 22:19:21,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2024-10-31 22:19:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-10-31 22:19:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-31 22:19:21,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:21,672 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2024-10-31 22:19:21,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:21,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:21,873 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:21,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115653, now seen corresponding path program 2 times [2024-10-31 22:19:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:19:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737771321] [2024-10-31 22:19:21,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:19:21,876 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 [2024-10-31 22:19:21,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:19:21,879 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:19:21,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a35ed8f4-e357-4d11-acc8-22656a28cb68/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:19:22,096 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:19:22,096 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:19:22,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-31 22:19:22,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:23,779 INFO L311 TraceCheckSpWp]: Computing backward predicates...