./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_15-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_15-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx --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 32bit --witnessprinter.graph.data.programhash 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:06:30,668 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:06:30,791 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:06:30,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:06:30,796 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:06:30,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:06:30,836 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:06:30,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:06:30,838 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:06:30,843 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:06:30,844 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:06:30,844 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:06:30,845 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:06:30,847 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:06:30,847 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:06:30,848 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:06:30,848 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:06:30,849 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:06:30,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:06:30,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:06:30,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:06:30,851 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:06:30,851 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:06:30,851 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:06:30,852 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:06:30,852 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:06:30,853 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:06:30,854 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:06:30,854 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:06:30,855 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:06:30,856 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:06:30,856 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:30,857 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:06:30,857 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:06:30,857 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:06:30,857 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:06:30,858 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:06:30,858 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:06:30,858 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:06:30,858 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:06:30,859 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:06:30,859 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:06:30,860 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_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79b24a1d7d86eb80482889a13c0517d1f5f9d33286d66b099b5dbfdfe805f8a9 [2023-11-21 22:06:31,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:06:31,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:06:31,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:06:31,242 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:06:31,243 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:06:31,244 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursive-simple/fibo_15-2.c [2023-11-21 22:06:34,391 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:06:34,619 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:06:34,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/sv-benchmarks/c/recursive-simple/fibo_15-2.c [2023-11-21 22:06:34,632 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/data/6fa8c1d74/c7771be8120842f0927d2c72356b9993/FLAG34e38b234 [2023-11-21 22:06:34,653 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/data/6fa8c1d74/c7771be8120842f0927d2c72356b9993 [2023-11-21 22:06:34,659 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:06:34,662 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:06:34,665 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:34,666 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:06:34,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:06:34,673 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,675 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ff7a855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34, skipping insertion in model container [2023-11-21 22:06:34,675 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,700 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:06:34,899 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/sv-benchmarks/c/recursive-simple/fibo_15-2.c[744,757] [2023-11-21 22:06:34,903 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:34,919 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:06:34,934 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/sv-benchmarks/c/recursive-simple/fibo_15-2.c[744,757] [2023-11-21 22:06:34,935 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:06:34,949 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:06:34,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34 WrapperNode [2023-11-21 22:06:34,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:06:34,951 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:34,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:06:34,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:06:34,960 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,966 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,983 INFO L138 Inliner]: procedures = 13, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-21 22:06:34,984 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:06:34,985 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:06:34,985 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:06:34,985 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:06:34,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:34,998 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,007 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:06:35,007 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,008 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,010 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,013 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,014 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:06:35,020 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:06:35,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:06:35,021 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:06:35,022 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (1/1) ... [2023-11-21 22:06:35,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:06:35,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:35,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:06:35,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:06:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:06:35,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:06:35,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:06:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:06:35,100 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2023-11-21 22:06:35,100 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2023-11-21 22:06:35,165 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:06:35,168 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:06:35,311 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:06:35,354 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:06:35,358 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:06:35,361 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:35 BoogieIcfgContainer [2023-11-21 22:06:35,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:06:35,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:06:35,368 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:06:35,372 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:06:35,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:06:34" (1/3) ... [2023-11-21 22:06:35,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45d15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:35, skipping insertion in model container [2023-11-21 22:06:35,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:06:34" (2/3) ... [2023-11-21 22:06:35,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e45d15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:06:35, skipping insertion in model container [2023-11-21 22:06:35,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:06:35" (3/3) ... [2023-11-21 22:06:35,379 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_15-2.c [2023-11-21 22:06:35,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:06:35,403 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:06:35,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:06:35,484 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4983cd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:06:35,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:06:35,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 22:06:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:06:35,503 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:35,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:35,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:35,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:35,519 INFO L85 PathProgramCache]: Analyzing trace with hash -798924922, now seen corresponding path program 1 times [2023-11-21 22:06:35,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:35,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446905557] [2023-11-21 22:06:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:35,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:35,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:35,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446905557] [2023-11-21 22:06:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446905557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:35,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:35,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:35,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248960618] [2023-11-21 22:06:35,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:35,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:35,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:35,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:35,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:35,896 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:06:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:35,949 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2023-11-21 22:06:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:06:35,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 22:06:35,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:35,966 INFO L225 Difference]: With dead ends: 26 [2023-11-21 22:06:35,967 INFO L226 Difference]: Without dead ends: 17 [2023-11-21 22:06:35,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:35,974 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 1 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:35,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 60 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:06:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-21 22:06:36,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-21 22:06:36,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:06:36,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-21 22:06:36,022 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 9 [2023-11-21 22:06:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:36,023 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-21 22:06:36,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:06:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-21 22:06:36,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:06:36,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:36,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:36,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:06:36,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:36,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:36,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1717873930, now seen corresponding path program 1 times [2023-11-21 22:06:36,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:36,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684721167] [2023-11-21 22:06:36,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:36,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:06:36,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:36,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684721167] [2023-11-21 22:06:36,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684721167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:06:36,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:06:36,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:06:36,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044641656] [2023-11-21 22:06:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:06:36,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:06:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:06:36,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:36,186 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:06:36,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:36,210 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2023-11-21 22:06:36,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:06:36,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-21 22:06:36,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:36,212 INFO L225 Difference]: With dead ends: 23 [2023-11-21 22:06:36,213 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 22:06:36,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:06:36,215 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:36,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:06:36,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 22:06:36,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2023-11-21 22:06:36,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 12 states have internal predecessors, (13), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-21 22:06:36,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2023-11-21 22:06:36,224 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2023-11-21 22:06:36,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:36,224 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2023-11-21 22:06:36,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:06:36,225 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2023-11-21 22:06:36,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 22:06:36,226 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:36,227 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:36,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:06:36,227 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:36,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:36,228 INFO L85 PathProgramCache]: Analyzing trace with hash 913644549, now seen corresponding path program 1 times [2023-11-21 22:06:36,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:36,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988066392] [2023-11-21 22:06:36,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:36,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:36,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:36,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:06:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:06:36,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:36,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988066392] [2023-11-21 22:06:36,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988066392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:36,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266847235] [2023-11-21 22:06:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:36,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:36,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:36,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:36,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:06:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:36,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:06:36,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:36,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:06:36,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:37,136 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 22:06:37,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266847235] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:37,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:37,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2023-11-21 22:06:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928850783] [2023-11-21 22:06:37,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:37,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:06:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:06:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:06:37,144 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:06:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:37,272 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-11-21 22:06:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:06:37,273 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 22 [2023-11-21 22:06:37,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:37,276 INFO L225 Difference]: With dead ends: 34 [2023-11-21 22:06:37,276 INFO L226 Difference]: Without dead ends: 19 [2023-11-21 22:06:37,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:06:37,284 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:37,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 38 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-21 22:06:37,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-21 22:06:37,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 3 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:06:37,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-11-21 22:06:37,307 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 22 [2023-11-21 22:06:37,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:37,307 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-11-21 22:06:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 12 states have internal predecessors, (29), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:06:37,308 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-11-21 22:06:37,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 22:06:37,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:37,310 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:37,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:37,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:37,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:37,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:37,512 INFO L85 PathProgramCache]: Analyzing trace with hash -252103063, now seen corresponding path program 1 times [2023-11-21 22:06:37,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:37,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218007457] [2023-11-21 22:06:37,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:37,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:06:37,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218007457] [2023-11-21 22:06:37,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218007457] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412392042] [2023-11-21 22:06:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:37,756 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:37,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:06:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:37,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:06:37,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:37,901 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:06:37,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-21 22:06:38,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412392042] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:38,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:38,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 11 [2023-11-21 22:06:38,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864861257] [2023-11-21 22:06:38,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:38,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:06:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:06:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:06:38,103 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 11 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:06:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:38,181 INFO L93 Difference]: Finished difference Result 37 states and 51 transitions. [2023-11-21 22:06:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:06:38,182 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 23 [2023-11-21 22:06:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:38,184 INFO L225 Difference]: With dead ends: 37 [2023-11-21 22:06:38,184 INFO L226 Difference]: Without dead ends: 33 [2023-11-21 22:06:38,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:06:38,186 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 42 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:38,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-21 22:06:38,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-11-21 22:06:38,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2023-11-21 22:06:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 47 transitions. [2023-11-21 22:06:38,200 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 47 transitions. Word has length 23 [2023-11-21 22:06:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:38,200 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 47 transitions. [2023-11-21 22:06:38,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.0) internal successors, (27), 11 states have internal predecessors, (27), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:06:38,202 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 47 transitions. [2023-11-21 22:06:38,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:06:38,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:38,206 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:38,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:38,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:38,427 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:38,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash 659330, now seen corresponding path program 2 times [2023-11-21 22:06:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:38,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125630287] [2023-11-21 22:06:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:38,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:38,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:38,699 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-21 22:06:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125630287] [2023-11-21 22:06:38,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125630287] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:38,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47082073] [2023-11-21 22:06:38,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:06:38,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:38,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:38,708 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:38,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:06:38,760 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:06:38,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:06:38,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:06:38,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 22:06:38,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:39,274 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 6 proven. 28 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 22:06:39,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47082073] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:39,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:39,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 17 [2023-11-21 22:06:39,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906815003] [2023-11-21 22:06:39,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:39,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-21 22:06:39,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-21 22:06:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:06:39,278 INFO L87 Difference]: Start difference. First operand 33 states and 47 transitions. Second operand has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-21 22:06:39,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:39,441 INFO L93 Difference]: Finished difference Result 68 states and 105 transitions. [2023-11-21 22:06:39,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:06:39,442 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) Word has length 36 [2023-11-21 22:06:39,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:39,444 INFO L225 Difference]: With dead ends: 68 [2023-11-21 22:06:39,444 INFO L226 Difference]: Without dead ends: 37 [2023-11-21 22:06:39,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2023-11-21 22:06:39,446 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:39,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 67 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:39,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-21 22:06:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-21 22:06:39,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 25 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (11), 7 states have call predecessors, (11), 5 states have call successors, (11) [2023-11-21 22:06:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-11-21 22:06:39,455 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 36 [2023-11-21 22:06:39,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:39,455 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-11-21 22:06:39,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 17 states have internal predecessors, (43), 10 states have call successors, (12), 1 states have call predecessors, (12), 7 states have return successors, (13), 6 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-21 22:06:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-11-21 22:06:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-21 22:06:39,459 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:39,459 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 5, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:39,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:39,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:39,675 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:39,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:39,676 INFO L85 PathProgramCache]: Analyzing trace with hash -867130448, now seen corresponding path program 3 times [2023-11-21 22:06:39,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:39,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511827135] [2023-11-21 22:06:39,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:39,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:39,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:39,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:40,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:40,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:40,164 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 27 proven. 166 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-21 22:06:40,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:40,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511827135] [2023-11-21 22:06:40,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511827135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:40,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887305800] [2023-11-21 22:06:40,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:06:40,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:40,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:40,166 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:40,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:06:40,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-11-21 22:06:40,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:06:40,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:06:40,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:40,327 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 17 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-21 22:06:40,327 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 174 proven. 18 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-21 22:06:40,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887305800] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:40,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:40,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 19 [2023-11-21 22:06:40,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945657906] [2023-11-21 22:06:40,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:40,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-21 22:06:40,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:40,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 22:06:40,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:06:40,793 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-21 22:06:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:41,088 INFO L93 Difference]: Finished difference Result 88 states and 132 transitions. [2023-11-21 22:06:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:06:41,089 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) Word has length 92 [2023-11-21 22:06:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:41,098 INFO L225 Difference]: With dead ends: 88 [2023-11-21 22:06:41,099 INFO L226 Difference]: Without dead ends: 52 [2023-11-21 22:06:41,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 196 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2023-11-21 22:06:41,106 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:41,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 89 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:06:41,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-21 22:06:41,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2023-11-21 22:06:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (16), 9 states have call predecessors, (16), 8 states have call successors, (16) [2023-11-21 22:06:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2023-11-21 22:06:41,127 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 92 [2023-11-21 22:06:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:41,130 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2023-11-21 22:06:41,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.8333333333333335) internal successors, (51), 19 states have internal predecessors, (51), 9 states have call successors, (13), 1 states have call predecessors, (13), 8 states have return successors, (17), 12 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-21 22:06:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2023-11-21 22:06:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 22:06:41,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:41,139 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:41,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:41,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:41,342 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:41,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:41,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1696376591, now seen corresponding path program 4 times [2023-11-21 22:06:41,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:41,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620162150] [2023-11-21 22:06:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:41,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:41,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:41,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:41,966 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-21 22:06:41,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620162150] [2023-11-21 22:06:41,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620162150] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:41,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991628118] [2023-11-21 22:06:41,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:06:41,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:41,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:41,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:06:42,061 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:06:42,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:06:42,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:06:42,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:42,158 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 229 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-21 22:06:42,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:43,069 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 42 proven. 255 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2023-11-21 22:06:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991628118] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:43,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:43,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 13] total 20 [2023-11-21 22:06:43,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476832658] [2023-11-21 22:06:43,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:43,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:06:43,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:43,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:06:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:06:43,074 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 20 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 20 states have internal predecessors, (53), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-21 22:06:43,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:43,251 INFO L93 Difference]: Finished difference Result 121 states and 171 transitions. [2023-11-21 22:06:43,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:06:43,252 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 20 states have internal predecessors, (53), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) Word has length 105 [2023-11-21 22:06:43,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:43,259 INFO L225 Difference]: With dead ends: 121 [2023-11-21 22:06:43,259 INFO L226 Difference]: Without dead ends: 117 [2023-11-21 22:06:43,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 226 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:06:43,261 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 34 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:43,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 74 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:06:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-21 22:06:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 108. [2023-11-21 22:06:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.1388888888888888) internal successors, (82), 70 states have internal predecessors, (82), 22 states have call successors, (22), 11 states have call predecessors, (22), 13 states have return successors, (49), 26 states have call predecessors, (49), 22 states have call successors, (49) [2023-11-21 22:06:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2023-11-21 22:06:43,311 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 105 [2023-11-21 22:06:43,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:43,312 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2023-11-21 22:06:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 20 states have internal predecessors, (53), 17 states have call successors, (18), 1 states have call predecessors, (18), 6 states have return successors, (24), 10 states have call predecessors, (24), 17 states have call successors, (24) [2023-11-21 22:06:43,313 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2023-11-21 22:06:43,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-11-21 22:06:43,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:43,322 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 8, 5, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:43,347 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-21 22:06:43,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:43,535 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:43,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:43,536 INFO L85 PathProgramCache]: Analyzing trace with hash -2122090202, now seen corresponding path program 5 times [2023-11-21 22:06:43,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:43,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401753060] [2023-11-21 22:06:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:43,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:43,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:43,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:43,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:06:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:44,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:44,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 93 proven. 533 refuted. 0 times theorem prover too weak. 1028 trivial. 0 not checked. [2023-11-21 22:06:44,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:44,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401753060] [2023-11-21 22:06:44,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401753060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:44,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636204698] [2023-11-21 22:06:44,360 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-21 22:06:44,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:44,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:44,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:44,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:06:44,491 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2023-11-21 22:06:44,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:06:44,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:06:44,498 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:44,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 328 proven. 115 refuted. 0 times theorem prover too weak. 1211 trivial. 0 not checked. [2023-11-21 22:06:44,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1654 backedges. 330 proven. 130 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2023-11-21 22:06:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636204698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:45,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:45,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 11] total 21 [2023-11-21 22:06:45,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57326127] [2023-11-21 22:06:45,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:45,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-21 22:06:45,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:45,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-21 22:06:45,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:06:45,328 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (24), 15 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-21 22:06:45,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:45,559 INFO L93 Difference]: Finished difference Result 249 states and 383 transitions. [2023-11-21 22:06:45,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:06:45,560 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (24), 15 states have call predecessors, (24), 14 states have call successors, (24) Word has length 173 [2023-11-21 22:06:45,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:45,565 INFO L225 Difference]: With dead ends: 249 [2023-11-21 22:06:45,565 INFO L226 Difference]: Without dead ends: 245 [2023-11-21 22:06:45,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 384 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=310, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:06:45,567 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 51 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:45,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 70 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:06:45,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2023-11-21 22:06:45,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 233. [2023-11-21 22:06:45,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 152 states have (on average 1.144736842105263) internal successors, (174), 148 states have internal predecessors, (174), 52 states have call successors, (52), 21 states have call predecessors, (52), 28 states have return successors, (135), 63 states have call predecessors, (135), 52 states have call successors, (135) [2023-11-21 22:06:45,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 361 transitions. [2023-11-21 22:06:45,604 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 361 transitions. Word has length 173 [2023-11-21 22:06:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:45,604 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 361 transitions. [2023-11-21 22:06:45,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.789473684210526) internal successors, (53), 21 states have internal predecessors, (53), 14 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (24), 15 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-21 22:06:45,605 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 361 transitions. [2023-11-21 22:06:45,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2023-11-21 22:06:45,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:45,611 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 33, 20, 20, 20, 20, 20, 20, 20, 13, 8, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:45,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:45,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:06:45,827 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:45,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:45,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1893730074, now seen corresponding path program 6 times [2023-11-21 22:06:45,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:45,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500665406] [2023-11-21 22:06:45,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:45,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:46,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:46,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:46,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:46,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:46,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:46,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:06:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:06:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:47,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:47,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 189 proven. 1130 refuted. 0 times theorem prover too weak. 3249 trivial. 0 not checked. [2023-11-21 22:06:47,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:47,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500665406] [2023-11-21 22:06:47,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500665406] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:47,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192863390] [2023-11-21 22:06:47,279 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-21 22:06:47,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:47,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:47,281 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:47,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:06:47,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2023-11-21 22:06:47,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:06:47,454 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:06:47,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 331 proven. 821 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2023-11-21 22:06:47,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4568 backedges. 335 proven. 857 refuted. 0 times theorem prover too weak. 3376 trivial. 0 not checked. [2023-11-21 22:06:49,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192863390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:49,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:49,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 15] total 25 [2023-11-21 22:06:49,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449883445] [2023-11-21 22:06:49,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:49,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-21 22:06:49,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:49,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-21 22:06:49,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2023-11-21 22:06:49,231 INFO L87 Difference]: Start difference. First operand 233 states and 361 transitions. Second operand has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 25 states have internal predecessors, (64), 20 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (32), 16 states have call predecessors, (32), 20 states have call successors, (32) [2023-11-21 22:06:49,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:49,478 INFO L93 Difference]: Finished difference Result 509 states and 847 transitions. [2023-11-21 22:06:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:06:49,479 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 25 states have internal predecessors, (64), 20 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (32), 16 states have call predecessors, (32), 20 states have call successors, (32) Word has length 282 [2023-11-21 22:06:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:49,488 INFO L225 Difference]: With dead ends: 509 [2023-11-21 22:06:49,488 INFO L226 Difference]: Without dead ends: 505 [2023-11-21 22:06:49,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 660 GetRequests, 630 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=437, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:06:49,491 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 120 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:49,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 76 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:06:49,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2023-11-21 22:06:49,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 490. [2023-11-21 22:06:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 316 states have (on average 1.1455696202531647) internal successors, (362), 308 states have internal predecessors, (362), 114 states have call successors, (114), 41 states have call predecessors, (114), 59 states have return successors, (345), 140 states have call predecessors, (345), 114 states have call successors, (345) [2023-11-21 22:06:49,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 821 transitions. [2023-11-21 22:06:49,554 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 821 transitions. Word has length 282 [2023-11-21 22:06:49,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:49,555 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 821 transitions. [2023-11-21 22:06:49,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.782608695652174) internal successors, (64), 25 states have internal predecessors, (64), 20 states have call successors, (23), 1 states have call predecessors, (23), 8 states have return successors, (32), 16 states have call predecessors, (32), 20 states have call successors, (32) [2023-11-21 22:06:49,555 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 821 transitions. [2023-11-21 22:06:49,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-11-21 22:06:49,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:49,567 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 54, 33, 33, 33, 33, 33, 33, 33, 21, 13, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:49,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:49,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-21 22:06:49,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:49,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:49,792 INFO L85 PathProgramCache]: Analyzing trace with hash -7406279, now seen corresponding path program 7 times [2023-11-21 22:06:49,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:49,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427516604] [2023-11-21 22:06:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:49,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:50,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:51,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:52,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:06:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:52,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:06:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-21 22:06:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:06:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:06:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:06:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:06:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:06:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:06:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2023-11-21 22:06:52,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:06:52,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427516604] [2023-11-21 22:06:52,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427516604] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:06:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307394758] [2023-11-21 22:06:52,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-21 22:06:52,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:06:52,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:06:52,623 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:06:52,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:06:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:52,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:06:52,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:06:52,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2270 refuted. 0 times theorem prover too weak. 9756 trivial. 0 not checked. [2023-11-21 22:06:52,996 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:06:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12387 backedges. 361 proven. 2347 refuted. 0 times theorem prover too weak. 9679 trivial. 0 not checked. [2023-11-21 22:06:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307394758] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:06:56,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:06:56,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 12, 19] total 29 [2023-11-21 22:06:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729596406] [2023-11-21 22:06:56,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:06:56,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-21 22:06:56,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:06:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-21 22:06:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=556, Unknown=0, NotChecked=0, Total=812 [2023-11-21 22:06:56,663 INFO L87 Difference]: Start difference. First operand 490 states and 821 transitions. Second operand has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 29 states have internal predecessors, (74), 26 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (39), 16 states have call predecessors, (39), 26 states have call successors, (39) [2023-11-21 22:06:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:06:56,982 INFO L93 Difference]: Finished difference Result 1033 states and 1850 transitions. [2023-11-21 22:06:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 22:06:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 29 states have internal predecessors, (74), 26 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (39), 16 states have call predecessors, (39), 26 states have call successors, (39) Word has length 459 [2023-11-21 22:06:56,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:06:57,003 INFO L225 Difference]: With dead ends: 1033 [2023-11-21 22:06:57,003 INFO L226 Difference]: Without dead ends: 1029 [2023-11-21 22:06:57,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1032 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2023-11-21 22:06:57,007 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 79 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:06:57,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 107 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:06:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2023-11-21 22:06:57,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1011. [2023-11-21 22:06:57,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 648 states have (on average 1.1450617283950617) internal successors, (742), 632 states have internal predecessors, (742), 240 states have call successors, (240), 81 states have call predecessors, (240), 122 states have return successors, (838), 297 states have call predecessors, (838), 240 states have call successors, (838) [2023-11-21 22:06:57,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1820 transitions. [2023-11-21 22:06:57,157 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1820 transitions. Word has length 459 [2023-11-21 22:06:57,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:06:57,158 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1820 transitions. [2023-11-21 22:06:57,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.740740740740741) internal successors, (74), 29 states have internal predecessors, (74), 26 states have call successors, (27), 1 states have call predecessors, (27), 9 states have return successors, (39), 16 states have call predecessors, (39), 26 states have call successors, (39) [2023-11-21 22:06:57,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1820 transitions. [2023-11-21 22:06:57,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 746 [2023-11-21 22:06:57,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:06:57,182 INFO L195 NwaCegarLoop]: trace histogram [109, 109, 88, 54, 54, 54, 54, 54, 54, 54, 34, 21, 1, 1, 1, 1, 1, 1] [2023-11-21 22:06:57,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:06:57,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:06:57,407 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:06:57,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:06:57,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1994288690, now seen corresponding path program 8 times [2023-11-21 22:06:57,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:06:57,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572719555] [2023-11-21 22:06:57,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:06:57,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:06:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:06:59,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:06:59,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:00,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:07:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:07:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:01,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-21 22:07:01,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:01,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:07:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2023-11-21 22:07:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:07:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:07:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:02,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:02,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 659 proven. 4380 refuted. 0 times theorem prover too weak. 28057 trivial. 0 not checked. [2023-11-21 22:07:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:07:02,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572719555] [2023-11-21 22:07:02,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572719555] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:07:02,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693680682] [2023-11-21 22:07:02,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:07:02,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:07:02,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:07:02,380 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:07:02,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:07:02,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:07:02,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:07:02,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:07:02,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:07:02,940 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 659 proven. 4380 refuted. 0 times theorem prover too weak. 28057 trivial. 0 not checked. [2023-11-21 22:07:02,940 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:07:07,925 INFO L134 CoverageAnalysis]: Checked inductivity of 33096 backedges. 659 proven. 4480 refuted. 0 times theorem prover too weak. 27957 trivial. 0 not checked. [2023-11-21 22:07:07,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693680682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:07:07,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:07:07,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 21] total 32 [2023-11-21 22:07:07,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787033917] [2023-11-21 22:07:07,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:07:07,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-21 22:07:07,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:07:07,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-21 22:07:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=314, Invalid=678, Unknown=0, NotChecked=0, Total=992 [2023-11-21 22:07:07,931 INFO L87 Difference]: Start difference. First operand 1011 states and 1820 transitions. Second operand has 32 states, 30 states have (on average 2.7) internal successors, (81), 32 states have internal predecessors, (81), 29 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (44), 18 states have call predecessors, (44), 29 states have call successors, (44) [2023-11-21 22:07:08,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:07:08,377 INFO L93 Difference]: Finished difference Result 2085 states and 3999 transitions. [2023-11-21 22:07:08,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-21 22:07:08,377 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 2.7) internal successors, (81), 32 states have internal predecessors, (81), 29 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (44), 18 states have call predecessors, (44), 29 states have call successors, (44) Word has length 745 [2023-11-21 22:07:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:07:08,443 INFO L225 Difference]: With dead ends: 2085 [2023-11-21 22:07:08,443 INFO L226 Difference]: Without dead ends: 2081 [2023-11-21 22:07:08,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1726 GetRequests, 1686 SyntacticMatches, 9 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=344, Invalid=712, Unknown=0, NotChecked=0, Total=1056 [2023-11-21 22:07:08,451 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 131 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:07:08,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 101 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:07:08,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2023-11-21 22:07:08,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 2060. [2023-11-21 22:07:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1316 states have (on average 1.1443768996960486) internal successors, (1506), 1284 states have internal predecessors, (1506), 494 states have call successors, (494), 161 states have call predecessors, (494), 249 states have return successors, (1965), 614 states have call predecessors, (1965), 494 states have call successors, (1965) [2023-11-21 22:07:08,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3965 transitions. [2023-11-21 22:07:08,737 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3965 transitions. Word has length 745 [2023-11-21 22:07:08,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:07:08,739 INFO L495 AbstractCegarLoop]: Abstraction has 2060 states and 3965 transitions. [2023-11-21 22:07:08,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 2.7) internal successors, (81), 32 states have internal predecessors, (81), 29 states have call successors, (30), 1 states have call predecessors, (30), 10 states have return successors, (44), 18 states have call predecessors, (44), 29 states have call successors, (44) [2023-11-21 22:07:08,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3965 transitions. [2023-11-21 22:07:08,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1209 [2023-11-21 22:07:08,813 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:07:08,814 INFO L195 NwaCegarLoop]: trace histogram [177, 177, 143, 88, 88, 88, 88, 88, 88, 88, 55, 34, 1, 1, 1, 1, 1, 1] [2023-11-21 22:07:08,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:07:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d77e06d6-c7cd-45dd-bd53-eaae7b192f50/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-21 22:07:09,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:07:09,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:07:09,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1347613546, now seen corresponding path program 9 times [2023-11-21 22:07:09,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:07:09,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409163027] [2023-11-21 22:07:09,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:07:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:07:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:11,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:07:12,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:07:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:15,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:07:15,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:07:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:07:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:07:16,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:07:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:07:16,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:07:16,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-21 22:07:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat