./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:18:51,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:18:51,308 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-10-31 22:18:51,313 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:18:51,313 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:18:51,337 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:18:51,338 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:18:51,339 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:18:51,340 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:18:51,340 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:18:51,341 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:18:51,341 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:18:51,342 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:18:51,342 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:18:51,343 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:18:51,343 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:18:51,344 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:18:51,344 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:18:51,345 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:18:51,345 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:18:51,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:18:51,355 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:18:51,355 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:18:51,355 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:18:51,356 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:18:51,356 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:18:51,357 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:18:51,357 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:18:51,357 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:18:51,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:51,358 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:18:51,358 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:18:51,359 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:18:51,359 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:18:51,359 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:18:51,360 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:18:51,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:18:51,360 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:18:51,361 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:18:51,361 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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc [2024-10-31 22:18:51,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:18:51,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:18:51,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:18:51,757 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:18:51,758 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:18:51,761 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c Unable to find full path for "g++" [2024-10-31 22:18:53,858 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:18:54,063 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:18:54,064 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c [2024-10-31 22:18:54,071 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data/59dbfb866/825d9c6abb3443e1913e053c9ede9a49/FLAG0be5b82f9 [2024-10-31 22:18:54,086 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data/59dbfb866/825d9c6abb3443e1913e053c9ede9a49 [2024-10-31 22:18:54,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:18:54,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:18:54,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:54,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:18:54,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:18:54,104 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,106 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65251b04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54, skipping insertion in model container [2024-10-31 22:18:54,109 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,136 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:18:54,378 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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-31 22:18:54,439 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:54,468 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:18:54,508 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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c[1256,1269] [2024-10-31 22:18:54,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:18:54,545 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:18:54,545 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54 WrapperNode [2024-10-31 22:18:54,546 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:18:54,547 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:54,547 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:18:54,547 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:18:54,556 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,563 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,590 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 58 [2024-10-31 22:18:54,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:18:54,591 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:18:54,591 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:18:54,592 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:18:54,608 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,608 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,611 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,625 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:18:54,626 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,626 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,640 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,641 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:18:54,647 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:18:54,647 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:18:54,647 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:18:54,652 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (1/1) ... [2024-10-31 22:18:54,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:18:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:54,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:18:54,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:18:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:18:54,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:18:54,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:18:54,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:18:54,829 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:18:54,833 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:18:55,074 INFO L? ?]: Removed 26 outVars from TransFormulas that were not future-live. [2024-10-31 22:18:55,074 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:18:55,088 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:18:55,091 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:18:55,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:55 BoogieIcfgContainer [2024-10-31 22:18:55,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:18:55,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:18:55,097 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:18:55,103 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:18:55,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:18:54" (1/3) ... [2024-10-31 22:18:55,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dd6125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:55, skipping insertion in model container [2024-10-31 22:18:55,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:18:54" (2/3) ... [2024-10-31 22:18:55,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54dd6125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:18:55, skipping insertion in model container [2024-10-31 22:18:55,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:55" (3/3) ... [2024-10-31 22:18:55,108 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.count2.c [2024-10-31 22:18:55,131 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:18:55,131 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:18:55,199 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:18:55,206 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;@236f1334, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:18:55,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:18:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 22:18:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:18:55,218 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:55,218 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:55,222 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:55,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:55,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1805152072, now seen corresponding path program 1 times [2024-10-31 22:18:55,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:55,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498173773] [2024-10-31 22:18:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:55,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:55,883 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 22:18:55,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:55,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498173773] [2024-10-31 22:18:55,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498173773] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:55,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:55,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:18:55,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461975213] [2024-10-31 22:18:55,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:55,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:55,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:55,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:55,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:55,932 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 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 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 22:18:56,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:56,018 INFO L93 Difference]: Finished difference Result 30 states and 41 transitions. [2024-10-31 22:18:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:56,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:18:56,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:56,029 INFO L225 Difference]: With dead ends: 30 [2024-10-31 22:18:56,029 INFO L226 Difference]: Without dead ends: 18 [2024-10-31 22:18:56,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:18:56,036 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:56,037 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:18:56,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-10-31 22:18:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-10-31 22:18:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:56,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2024-10-31 22:18:56,072 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 7 [2024-10-31 22:18:56,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:56,072 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2024-10-31 22:18:56,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 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 22:18:56,073 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2024-10-31 22:18:56,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-31 22:18:56,074 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:56,074 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:56,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:18:56,074 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:56,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash 185570019, now seen corresponding path program 1 times [2024-10-31 22:18:56,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:56,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510762941] [2024-10-31 22:18:56,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:56,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510762941] [2024-10-31 22:18:56,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510762941] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957919851] [2024-10-31 22:18:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:56,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:56,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:56,500 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:56,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:18:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:56,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-10-31 22:18:56,610 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:56,932 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 22:18:56,935 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:57,157 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 22:18:57,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957919851] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:57,157 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:57,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 7] total 13 [2024-10-31 22:18:57,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057705343] [2024-10-31 22:18:57,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:57,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:18:57,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:57,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:18:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:18:57,165 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 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 22:18:57,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:57,303 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2024-10-31 22:18:57,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:18:57,304 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 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 12 [2024-10-31 22:18:57,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:57,304 INFO L225 Difference]: With dead ends: 23 [2024-10-31 22:18:57,304 INFO L226 Difference]: Without dead ends: 21 [2024-10-31 22:18:57,305 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-10-31 22:18:57,306 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 38 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:57,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 98 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:57,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-10-31 22:18:57,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-10-31 22:18:57,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 22:18:57,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2024-10-31 22:18:57,315 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2024-10-31 22:18:57,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:57,316 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2024-10-31 22:18:57,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 13 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 22:18:57,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2024-10-31 22:18:57,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-31 22:18:57,318 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:57,318 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:57,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:18:57,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:57,523 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:57,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1511026262, now seen corresponding path program 1 times [2024-10-31 22:18:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861288369] [2024-10-31 22:18:57,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:18:57,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:57,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861288369] [2024-10-31 22:18:57,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861288369] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:18:57,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:18:57,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:18:57,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622944526] [2024-10-31 22:18:57,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:18:57,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:18:57,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:57,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:18:57,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:57,727 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:18:57,805 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2024-10-31 22:18:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-31 22:18:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-31 22:18:57,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:18:57,808 INFO L225 Difference]: With dead ends: 36 [2024-10-31 22:18:57,808 INFO L226 Difference]: Without dead ends: 24 [2024-10-31 22:18:57,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:18:57,810 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:18:57,812 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 20 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:18:57,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-31 22:18:57,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2024-10-31 22:18:57,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 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 22:18:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2024-10-31 22:18:57,821 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 13 [2024-10-31 22:18:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:18:57,821 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2024-10-31 22:18:57,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:18:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2024-10-31 22:18:57,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-31 22:18:57,823 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:18:57,823 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:18:57,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:18:57,824 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:18:57,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:18:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash -346732602, now seen corresponding path program 1 times [2024-10-31 22:18:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:18:57,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064732847] [2024-10-31 22:18:57,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:57,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:18:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:58,439 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 22:18:58,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:18:58,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064732847] [2024-10-31 22:18:58,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064732847] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:18:58,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155048856] [2024-10-31 22:18:58,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:18:58,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:18:58,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:18:58,445 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:18:58,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:18:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:18:58,522 WARN L253 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-31 22:18:58,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:18:59,019 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 22:18:59,019 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:18:59,699 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 22:18:59,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155048856] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:18:59,700 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:18:59,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 26 [2024-10-31 22:18:59,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117297350] [2024-10-31 22:18:59,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:18:59,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-10-31 22:18:59,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:18:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-10-31 22:18:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-10-31 22:18:59,703 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:00,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:00,002 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2024-10-31 22:19:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:19:00,002 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-10-31 22:19:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:00,003 INFO L225 Difference]: With dead ends: 40 [2024-10-31 22:19:00,003 INFO L226 Difference]: Without dead ends: 28 [2024-10-31 22:19:00,004 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2024-10-31 22:19:00,005 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 12 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:00,006 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 54 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:19:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-31 22:19:00,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 24. [2024-10-31 22:19:00,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 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 22:19:00,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-10-31 22:19:00,010 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2024-10-31 22:19:00,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:00,011 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-10-31 22:19:00,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:00,011 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-10-31 22:19:00,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:19:00,012 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:00,012 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:00,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:19:00,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:00,213 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:00,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:00,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1746694228, now seen corresponding path program 1 times [2024-10-31 22:19:00,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:00,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341112440] [2024-10-31 22:19:00,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:00,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:00,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:00,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341112440] [2024-10-31 22:19:00,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341112440] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:00,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79246806] [2024-10-31 22:19:00,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:00,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:00,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:00,599 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:00,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:19:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:00,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-10-31 22:19:00,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:00,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:00,972 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79246806] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:01,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:01,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 10] total 21 [2024-10-31 22:19:01,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457146719] [2024-10-31 22:19:01,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:01,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-10-31 22:19:01,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:01,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-10-31 22:19:01,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2024-10-31 22:19:01,620 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 22:19:01,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:01,883 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-10-31 22:19:01,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:19:01,883 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-31 22:19:01,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:01,884 INFO L225 Difference]: With dead ends: 51 [2024-10-31 22:19:01,884 INFO L226 Difference]: Without dead ends: 39 [2024-10-31 22:19:01,885 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2024-10-31 22:19:01,886 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:01,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 54 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:19:01,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-31 22:19:01,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2024-10-31 22:19:01,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:01,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2024-10-31 22:19:01,893 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 20 [2024-10-31 22:19:01,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:01,893 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2024-10-31 22:19:01,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.142857142857143) internal successors, (45), 21 states have internal predecessors, (45), 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 22:19:01,894 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2024-10-31 22:19:01,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-31 22:19:01,894 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:01,895 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:01,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:19:02,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:02,096 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:02,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1630960248, now seen corresponding path program 2 times [2024-10-31 22:19:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146315233] [2024-10-31 22:19:02,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:03,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:03,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:03,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146315233] [2024-10-31 22:19:03,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146315233] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:03,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479548845] [2024-10-31 22:19:03,099 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:19:03,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:03,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:03,105 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:03,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:19:03,212 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:19:03,212 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:19:03,214 WARN L253 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-10-31 22:19:03,218 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:04,216 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:04,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:09,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:09,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479548845] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:09,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:09,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 14] total 35 [2024-10-31 22:19:09,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22051733] [2024-10-31 22:19:09,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:09,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-10-31 22:19:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-10-31 22:19:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1065, Unknown=0, NotChecked=0, Total=1190 [2024-10-31 22:19:09,983 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 states have internal predecessors, (58), 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 22:19:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:11,137 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2024-10-31 22:19:11,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-10-31 22:19:11,140 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-31 22:19:11,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:11,141 INFO L225 Difference]: With dead ends: 49 [2024-10-31 22:19:11,141 INFO L226 Difference]: Without dead ends: 37 [2024-10-31 22:19:11,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=341, Invalid=2109, Unknown=0, NotChecked=0, Total=2450 [2024-10-31 22:19:11,143 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:11,143 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 40 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:19:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-10-31 22:19:11,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2024-10-31 22:19:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 36 states have internal predecessors, (40), 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 22:19:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-10-31 22:19:11,162 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 21 [2024-10-31 22:19:11,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:11,162 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-10-31 22:19:11,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.6571428571428573) internal successors, (58), 35 states have internal predecessors, (58), 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 22:19:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-10-31 22:19:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-10-31 22:19:11,163 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:11,163 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:11,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:19:11,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:19:11,370 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:11,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:11,371 INFO L85 PathProgramCache]: Analyzing trace with hash 860979732, now seen corresponding path program 2 times [2024-10-31 22:19:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964062028] [2024-10-31 22:19:11,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:11,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:11,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964062028] [2024-10-31 22:19:12,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964062028] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:12,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453118089] [2024-10-31 22:19:12,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:19:12,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:12,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:12,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:12,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:19:12,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:19:12,884 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:19:12,886 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 75 conjuncts are in the unsatisfiable core [2024-10-31 22:19:12,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 11 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:14,587 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 7 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:15,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453118089] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:15,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:15,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 17] total 44 [2024-10-31 22:19:15,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311650490] [2024-10-31 22:19:15,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:15,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-10-31 22:19:15,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-10-31 22:19:15,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1630, Unknown=0, NotChecked=0, Total=1892 [2024-10-31 22:19:15,847 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 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 22:19:16,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:19:16,936 INFO L93 Difference]: Finished difference Result 70 states and 77 transitions. [2024-10-31 22:19:16,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:19:16,937 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 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 34 [2024-10-31 22:19:16,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:19:16,938 INFO L225 Difference]: With dead ends: 70 [2024-10-31 22:19:16,939 INFO L226 Difference]: Without dead ends: 58 [2024-10-31 22:19:16,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 907 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2024-10-31 22:19:16,942 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:19:16,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 63 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:19:16,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-31 22:19:16,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-10-31 22:19:16,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 57 states have internal predecessors, (61), 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 22:19:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-10-31 22:19:16,952 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 34 [2024-10-31 22:19:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:19:16,953 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-10-31 22:19:16,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1363636363636362) internal successors, (94), 44 states have internal predecessors, (94), 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 22:19:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-10-31 22:19:16,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-10-31 22:19:16,956 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:19:16,958 INFO L215 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:16,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:17,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-31 22:19:17,159 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:19:17,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:17,159 INFO L85 PathProgramCache]: Analyzing trace with hash 550162710, now seen corresponding path program 3 times [2024-10-31 22:19:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137036097] [2024-10-31 22:19:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:17,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:17,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:19:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:19:17,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:19:17,410 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:19:17,411 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:19:17,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:17,418 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1] [2024-10-31 22:19:17,448 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:19:17,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:19:17 BoogieIcfgContainer [2024-10-31 22:19:17,450 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:19:17,451 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:19:17,451 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:19:17,451 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:19:17,452 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:18:55" (3/4) ... [2024-10-31 22:19:17,454 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:19:17,455 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:19:17,456 INFO L158 Benchmark]: Toolchain (without parser) took 23364.72ms. Allocated memory was 123.7MB in the beginning and 362.8MB in the end (delta: 239.1MB). Free memory was 72.8MB in the beginning and 198.5MB in the end (delta: -125.7MB). Peak memory consumption was 114.6MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,456 INFO L158 Benchmark]: CDTParser took 1.86ms. Allocated memory is still 123.7MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:19:17,456 INFO L158 Benchmark]: CACSL2BoogieTranslator took 453.23ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 72.7MB in the beginning and 145.2MB in the end (delta: -72.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,457 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.87ms. Allocated memory is still 174.1MB. Free memory was 145.2MB in the beginning and 142.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,457 INFO L158 Benchmark]: Boogie Preprocessor took 54.75ms. Allocated memory is still 174.1MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,457 INFO L158 Benchmark]: RCFGBuilder took 444.88ms. Allocated memory is still 174.1MB. Free memory was 141.1MB in the beginning and 128.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,457 INFO L158 Benchmark]: TraceAbstraction took 22354.10ms. Allocated memory was 174.1MB in the beginning and 362.8MB in the end (delta: 188.7MB). Free memory was 127.3MB in the beginning and 199.6MB in the end (delta: -72.2MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,458 INFO L158 Benchmark]: Witness Printer took 4.25ms. Allocated memory is still 362.8MB. Free memory was 199.6MB in the beginning and 198.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:19:17,459 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.86ms. Allocated memory is still 123.7MB. Free memory is still 96.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 453.23ms. Allocated memory was 123.7MB in the beginning and 174.1MB in the end (delta: 50.3MB). Free memory was 72.7MB in the beginning and 145.2MB in the end (delta: -72.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.87ms. Allocated memory is still 174.1MB. Free memory was 145.2MB in the beginning and 142.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.75ms. Allocated memory is still 174.1MB. Free memory was 142.7MB in the beginning and 141.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.88ms. Allocated memory is still 174.1MB. Free memory was 141.1MB in the beginning and 128.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22354.10ms. Allocated memory was 174.1MB in the beginning and 362.8MB in the end (delta: 188.7MB). Free memory was 127.3MB in the beginning and 199.6MB in the end (delta: -72.2MB). Peak memory consumption was 118.2MB. Max. memory is 16.1GB. * Witness Printer took 4.25ms. Allocated memory is still 362.8MB. Free memory was 199.6MB in the beginning and 198.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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: 22]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 55. Possible FailurePath: [L27] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 3); [L28] const SORT_1 msb_SORT_1 = (SORT_1)1 << (3 - 1); [L30] const SORT_9 mask_SORT_9 = (SORT_9)-1 >> (sizeof(SORT_9) * 8 - 1); [L31] const SORT_9 msb_SORT_9 = (SORT_9)1 << (1 - 1); [L33] const SORT_1 var_2 = 0; [L34] const SORT_1 var_5 = 1; [L35] const SORT_1 var_8 = mask_SORT_1; [L38] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 VAL [mask_SORT_1=7, var_2=0, var_5=1, var_8=7] [L38] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L40] SORT_1 init_4_arg_1 = var_2; [L41] state_3 = init_4_arg_1 VAL [mask_SORT_1=7, state_3=0, var_5=1, var_8=7] [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=1, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=2, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=3, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=4, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=5, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=6, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(!(bad_11_arg_0)) [L52] SORT_1 var_6_arg_0 = state_3; [L53] SORT_1 var_6_arg_1 = var_5; [L54] SORT_1 var_6 = var_6_arg_0 + var_6_arg_1; VAL [mask_SORT_1=7, var_5=1, var_6=7, var_8=7] [L55] EXPR var_6 & mask_SORT_1 VAL [mask_SORT_1=7, var_5=1, var_8=7] [L55] var_6 = var_6 & mask_SORT_1 [L56] SORT_1 next_7_arg_1 = var_6; [L58] state_3 = next_7_arg_1 [L46] SORT_1 var_10_arg_0 = state_3; [L47] SORT_1 var_10_arg_1 = var_8; [L48] SORT_9 var_10 = var_10_arg_0 == var_10_arg_1; [L49] SORT_9 bad_11_arg_0 = var_10; [L50] CALL __VERIFIER_assert(!(bad_11_arg_0)) [L22] COND TRUE !(cond) [L22] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.2s, OverallIterations: 8, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 381 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 325 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1108 IncrementalHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 56 mSDtfsCounter, 1108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 122 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1681 ImplicationChecksByTransitivity, 6.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=7, InterpolantAutomatonStates: 82, 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, 7 MinimizatonAttempts, 11 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 16.5s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 306 ConstructedInterpolants, 15 QuantifiedInterpolants, 6510 SizeOfPredicates, 16 NumberOfNonLiveVariables, 559 ConjunctsInSsa, 250 ConjunctsInUnsatCore, 17 InterpolantComputations, 2 PerfectInterpolantSequences, 50/218 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 22:19:17,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:19,978 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:20,070 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2024-10-31 22:19:20,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:20,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:20,115 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:20,116 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:20,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:20,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:20,118 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:20,119 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:20,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:20,120 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:20,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:20,125 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:20,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:20,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:19:20,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:20,127 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:19:20,127 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:20,127 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:19:20,129 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:19:20,130 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:19:20,130 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:20,131 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:19:20,131 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:19:20,131 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:20,132 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:20,132 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:20,132 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:20,133 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:20,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:20,134 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:20,134 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:20,135 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:19:20,135 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:19:20,136 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:19:20,137 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:20,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:20,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:20,138 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:20,138 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:19:20,147 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_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02da88a4f4d1ccaffb329e5ada42e451b6381aa731e6c7a9ccc4142d0ea1fbdc [2024-10-31 22:19:20,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:20,596 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:20,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:20,603 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:20,603 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:20,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3ca4f35-248e-40cc-8afc-cd1af31ac40c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.count2.c