./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_exit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_exit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:09:25,575 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:09:25,665 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:09:25,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:09:25,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:09:25,692 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:09:25,692 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:09:25,693 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:09:25,694 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:09:25,694 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:09:25,695 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:09:25,695 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:09:25,696 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:09:25,696 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:09:25,697 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:09:25,698 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:09:25,698 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:09:25,698 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:09:25,699 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:09:25,699 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:09:25,700 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:09:25,701 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:09:25,701 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:09:25,702 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:09:25,706 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:09:25,706 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:09:25,707 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:09:25,707 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:09:25,708 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:09:25,708 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:09:25,709 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:09:25,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:09:25,710 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:25,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:09:25,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:09:25,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:09:25,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:09:25,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:09:25,713 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:09:25,713 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:09:25,713 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:09:25,714 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:09:25,714 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_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d77357c243d95f35d00bc89e7fc23b91d82935f320cfab6cb2f6a7d192f5b03f [2024-10-31 22:09:26,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:09:26,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:09:26,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:09:26,046 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:09:26,047 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:09:26,048 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/float-benchs/rlim_exit.c Unable to find full path for "g++" [2024-10-31 22:09:28,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:09:28,576 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:09:28,577 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/sv-benchmarks/c/float-benchs/rlim_exit.c [2024-10-31 22:09:28,584 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/data/514eaa111/0ef95fb9dadf43268df4380fdb0ebc20/FLAG4315793d7 [2024-10-31 22:09:28,598 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/data/514eaa111/0ef95fb9dadf43268df4380fdb0ebc20 [2024-10-31 22:09:28,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:09:28,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:09:28,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:28,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:09:28,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:09:28,614 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@da8a3fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:28, skipping insertion in model container [2024-10-31 22:09:28,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:09:28" (1/1) ... [2024-10-31 22:09:28,646 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:09:28,891 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/sv-benchmarks/c/float-benchs/rlim_exit.c[446,459] [2024-10-31 22:09:28,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:28,944 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:09:28,979 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/sv-benchmarks/c/float-benchs/rlim_exit.c[446,459] [2024-10-31 22:09:28,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:09:29,031 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:09:29,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29 WrapperNode [2024-10-31 22:09:29,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:09:29,033 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:29,034 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:09:29,034 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:09:29,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,051 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,077 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2024-10-31 22:09:29,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:09:29,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:09:29,079 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:09:29,079 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:09:29,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,093 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,106 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:09:29,106 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,106 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:09:29,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:09:29,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:09:29,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:09:29,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (1/1) ... [2024-10-31 22:09:29,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:09:29,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:29,155 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:09:29,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-31 22:09:29,187 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-31 22:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:09:29,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:09:29,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:09:29,251 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:09:29,254 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:09:29,385 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-10-31 22:09:29,385 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:09:29,405 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:09:29,405 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:09:29,405 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:29 BoogieIcfgContainer [2024-10-31 22:09:29,405 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:09:29,408 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:09:29,408 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:09:29,412 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:09:29,412 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:09:28" (1/3) ... [2024-10-31 22:09:29,413 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401d470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:29, skipping insertion in model container [2024-10-31 22:09:29,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:09:29" (2/3) ... [2024-10-31 22:09:29,414 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401d470d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:09:29, skipping insertion in model container [2024-10-31 22:09:29,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:09:29" (3/3) ... [2024-10-31 22:09:29,416 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_exit.c [2024-10-31 22:09:29,436 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:09:29,436 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:09:29,538 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:09:29,550 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@481aa9d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:09:29,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:09:29,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:09:29,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:09:29,566 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:29,567 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:09:29,569 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:29,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:29,576 INFO L85 PathProgramCache]: Analyzing trace with hash 889617946, now seen corresponding path program 1 times [2024-10-31 22:09:29,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:29,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884195653] [2024-10-31 22:09:29,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:29,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:29,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:09:29,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:29,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884195653] [2024-10-31 22:09:29,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884195653] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:09:29,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:09:29,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:09:29,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52283625] [2024-10-31 22:09:29,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:09:29,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:09:29,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:09:29,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:29,942 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.4375) internal successors, (23), 17 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:29,985 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2024-10-31 22:09:29,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:09:29,991 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-31 22:09:29,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:29,999 INFO L225 Difference]: With dead ends: 47 [2024-10-31 22:09:29,999 INFO L226 Difference]: Without dead ends: 24 [2024-10-31 22:09:30,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:09:30,007 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:30,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-31 22:09:30,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2024-10-31 22:09:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-31 22:09:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-10-31 22:09:30,066 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 6 [2024-10-31 22:09:30,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:30,067 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-10-31 22:09:30,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:09:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-10-31 22:09:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-31 22:09:30,069 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:30,069 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:30,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:09:30,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:30,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1329688190, now seen corresponding path program 1 times [2024-10-31 22:09:30,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661514388] [2024-10-31 22:09:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:30,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,225 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:09:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:09:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:30,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:30,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661514388] [2024-10-31 22:09:30,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661514388] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:30,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952823598] [2024-10-31 22:09:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:30,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:30,252 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:30,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:09:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:30,332 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-31 22:09:30,338 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:30,436 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:30,440 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:30,513 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:09:30,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952823598] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:30,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:30,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-10-31 22:09:30,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310448625] [2024-10-31 22:09:30,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:30,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:09:30,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:30,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:09:30,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:30,519 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:09:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:30,577 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2024-10-31 22:09:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:09:30,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 20 [2024-10-31 22:09:30,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:30,579 INFO L225 Difference]: With dead ends: 43 [2024-10-31 22:09:30,579 INFO L226 Difference]: Without dead ends: 39 [2024-10-31 22:09:30,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:09:30,581 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 21 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:30,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 65 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:09:30,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-10-31 22:09:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-10-31 22:09:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 29 states have internal predecessors, (38), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-31 22:09:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 54 transitions. [2024-10-31 22:09:30,601 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 54 transitions. Word has length 20 [2024-10-31 22:09:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:30,601 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 54 transitions. [2024-10-31 22:09:30,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-10-31 22:09:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 54 transitions. [2024-10-31 22:09:30,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-31 22:09:30,606 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:30,606 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:30,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:09:30,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-10-31 22:09:30,811 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:30,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:30,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1445218234, now seen corresponding path program 2 times [2024-10-31 22:09:30,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:30,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095105709] [2024-10-31 22:09:30,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:30,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,090 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:09:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,102 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:09:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,110 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,119 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 22:09:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,127 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,134 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:09:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:09:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 22:09:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-31 22:09:31,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095105709] [2024-10-31 22:09:31,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095105709] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:31,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942904674] [2024-10-31 22:09:31,183 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:09:31,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:31,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:31,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:31,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:09:31,306 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:09:31,306 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:31,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-31 22:09:31,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-31 22:09:31,464 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2024-10-31 22:09:31,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942904674] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:31,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:31,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-10-31 22:09:31,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878654914] [2024-10-31 22:09:31,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:31,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:09:31,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:09:31,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:09:31,710 INFO L87 Difference]: Start difference. First operand 39 states and 54 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-10-31 22:09:31,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:31,866 INFO L93 Difference]: Finished difference Result 85 states and 129 transitions. [2024-10-31 22:09:31,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:09:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 62 [2024-10-31 22:09:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:31,871 INFO L225 Difference]: With dead ends: 85 [2024-10-31 22:09:31,871 INFO L226 Difference]: Without dead ends: 81 [2024-10-31 22:09:31,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:09:31,877 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:31,878 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 99 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:09:31,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-10-31 22:09:31,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-10-31 22:09:31,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 59 states have (on average 1.3559322033898304) internal successors, (80), 59 states have internal predecessors, (80), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-10-31 22:09:31,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 120 transitions. [2024-10-31 22:09:31,911 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 120 transitions. Word has length 62 [2024-10-31 22:09:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:31,912 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 120 transitions. [2024-10-31 22:09:31,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 13 states have internal predecessors, (48), 9 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2024-10-31 22:09:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 120 transitions. [2024-10-31 22:09:31,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-10-31 22:09:31,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:31,917 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:31,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:09:32,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:32,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:32,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:32,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1026727382, now seen corresponding path program 3 times [2024-10-31 22:09:32,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:32,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046589742] [2024-10-31 22:09:32,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:32,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,708 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:09:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,714 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:09:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 22:09:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:32,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:09:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:09:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 22:09:32,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,783 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:09:32,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:09:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:09:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,805 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:09:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,811 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:09:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,818 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:09:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:09:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:09:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,838 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:09:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,845 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-31 22:09:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,853 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-31 22:09:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-31 22:09:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:32,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-31 22:09:32,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:32,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046589742] [2024-10-31 22:09:32,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046589742] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:32,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109779135] [2024-10-31 22:09:32,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:09:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:32,880 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:32,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:09:33,024 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2024-10-31 22:09:33,024 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:33,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-10-31 22:09:33,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:33,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-31 22:09:33,234 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:33,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1040 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-10-31 22:09:33,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109779135] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:33,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:33,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-10-31 22:09:33,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581688605] [2024-10-31 22:09:33,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:33,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-31 22:09:33,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-31 22:09:33,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 22:09:33,738 INFO L87 Difference]: Start difference. First operand 81 states and 120 transitions. Second operand has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2024-10-31 22:09:34,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:34,002 INFO L93 Difference]: Finished difference Result 169 states and 267 transitions. [2024-10-31 22:09:34,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-10-31 22:09:34,003 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) Word has length 146 [2024-10-31 22:09:34,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:34,005 INFO L225 Difference]: With dead ends: 169 [2024-10-31 22:09:34,006 INFO L226 Difference]: Without dead ends: 165 [2024-10-31 22:09:34,006 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-10-31 22:09:34,010 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 201 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:34,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 164 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:09:34,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-10-31 22:09:34,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-10-31 22:09:34,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 44 states have call successors, (44), 1 states have call predecessors, (44), 1 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-10-31 22:09:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 252 transitions. [2024-10-31 22:09:34,051 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 252 transitions. Word has length 146 [2024-10-31 22:09:34,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:34,055 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 252 transitions. [2024-10-31 22:09:34,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.84) internal successors, (96), 25 states have internal predecessors, (96), 21 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 21 states have call predecessors, (42), 21 states have call successors, (42) [2024-10-31 22:09:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 252 transitions. [2024-10-31 22:09:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-10-31 22:09:34,068 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:34,068 INFO L215 NwaCegarLoop]: trace histogram [44, 44, 44, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:34,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:09:34,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:34,269 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:34,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash 680021770, now seen corresponding path program 4 times [2024-10-31 22:09:34,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:34,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209845464] [2024-10-31 22:09:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:34,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:09:35,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:09:35,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 22:09:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:09:35,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:09:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 22:09:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,659 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:09:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:09:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:09:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:09:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,678 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:09:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,683 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:09:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:09:35,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:09:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:09:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-31 22:09:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,709 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-31 22:09:35,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-31 22:09:35,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,721 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-31 22:09:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,725 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-31 22:09:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-31 22:09:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-31 22:09:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-31 22:09:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-31 22:09:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,749 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-31 22:09:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-31 22:09:35,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-31 22:09:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-31 22:09:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-31 22:09:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,773 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-31 22:09:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,785 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-31 22:09:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-31 22:09:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-31 22:09:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-31 22:09:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-31 22:09:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-31 22:09:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,815 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-31 22:09:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-31 22:09:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-31 22:09:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-31 22:09:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-31 22:09:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,841 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-31 22:09:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:35,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-31 22:09:35,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209845464] [2024-10-31 22:09:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209845464] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704007119] [2024-10-31 22:09:35,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-31 22:09:35,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:35,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:35,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:35,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:09:36,108 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-31 22:09:36,108 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:36,111 INFO L255 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:09:36,129 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:36,435 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-31 22:09:36,435 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:37,904 INFO L134 CoverageAnalysis]: Checked inductivity of 5192 backedges. 0 proven. 1408 refuted. 0 times theorem prover too weak. 3784 trivial. 0 not checked. [2024-10-31 22:09:37,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704007119] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:37,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:37,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-10-31 22:09:37,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585001696] [2024-10-31 22:09:37,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:37,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-10-31 22:09:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:37,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-10-31 22:09:37,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:09:37,910 INFO L87 Difference]: Start difference. First operand 165 states and 252 transitions. Second operand has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 45 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 45 states have call predecessors, (90), 45 states have call successors, (90) [2024-10-31 22:09:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:38,564 INFO L93 Difference]: Finished difference Result 337 states and 543 transitions. [2024-10-31 22:09:38,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-10-31 22:09:38,565 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 45 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 45 states have call predecessors, (90), 45 states have call successors, (90) Word has length 314 [2024-10-31 22:09:38,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:38,571 INFO L225 Difference]: With dead ends: 337 [2024-10-31 22:09:38,574 INFO L226 Difference]: Without dead ends: 333 [2024-10-31 22:09:38,576 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-10-31 22:09:38,577 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 423 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:38,577 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 302 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-31 22:09:38,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-10-31 22:09:38,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 333. [2024-10-31 22:09:38,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 239 states have (on average 1.389121338912134) internal successors, (332), 239 states have internal predecessors, (332), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-10-31 22:09:38,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 516 transitions. [2024-10-31 22:09:38,645 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 516 transitions. Word has length 314 [2024-10-31 22:09:38,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:38,646 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 516 transitions. [2024-10-31 22:09:38,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.9183673469387754) internal successors, (192), 49 states have internal predecessors, (192), 45 states have call successors, (90), 1 states have call predecessors, (90), 1 states have return successors, (90), 45 states have call predecessors, (90), 45 states have call successors, (90) [2024-10-31 22:09:38,647 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 516 transitions. [2024-10-31 22:09:38,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-10-31 22:09:38,671 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:38,671 INFO L215 NwaCegarLoop]: trace histogram [92, 92, 92, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:38,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-31 22:09:38,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:38,872 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:38,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1781598410, now seen corresponding path program 5 times [2024-10-31 22:09:38,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:38,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745968914] [2024-10-31 22:09:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:38,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,326 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:09:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-31 22:09:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-31 22:09:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2024-10-31 22:09:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-31 22:09:42,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-10-31 22:09:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,351 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-10-31 22:09:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-10-31 22:09:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,357 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-10-31 22:09:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-10-31 22:09:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-10-31 22:09:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-10-31 22:09:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-10-31 22:09:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2024-10-31 22:09:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-10-31 22:09:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2024-10-31 22:09:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,381 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-10-31 22:09:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,384 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2024-10-31 22:09:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2024-10-31 22:09:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,390 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2024-10-31 22:09:42,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,393 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2024-10-31 22:09:42,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,396 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2024-10-31 22:09:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-10-31 22:09:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-10-31 22:09:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,405 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2024-10-31 22:09:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2024-10-31 22:09:42,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2024-10-31 22:09:42,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2024-10-31 22:09:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2024-10-31 22:09:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2024-10-31 22:09:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2024-10-31 22:09:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,426 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2024-10-31 22:09:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,429 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2024-10-31 22:09:42,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,432 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2024-10-31 22:09:42,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2024-10-31 22:09:42,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,438 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2024-10-31 22:09:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2024-10-31 22:09:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2024-10-31 22:09:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2024-10-31 22:09:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2024-10-31 22:09:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,454 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2024-10-31 22:09:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2024-10-31 22:09:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2024-10-31 22:09:42,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-10-31 22:09:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2024-10-31 22:09:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,479 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2024-10-31 22:09:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,483 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2024-10-31 22:09:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,487 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2024-10-31 22:09:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2024-10-31 22:09:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2024-10-31 22:09:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2024-10-31 22:09:42,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2024-10-31 22:09:42,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2024-10-31 22:09:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 372 [2024-10-31 22:09:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-10-31 22:09:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2024-10-31 22:09:42,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,521 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 395 [2024-10-31 22:09:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 400 [2024-10-31 22:09:42,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2024-10-31 22:09:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 414 [2024-10-31 22:09:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,534 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 423 [2024-10-31 22:09:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 428 [2024-10-31 22:09:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2024-10-31 22:09:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,543 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2024-10-31 22:09:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2024-10-31 22:09:42,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,549 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 456 [2024-10-31 22:09:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2024-10-31 22:09:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,555 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2024-10-31 22:09:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 479 [2024-10-31 22:09:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2024-10-31 22:09:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2024-10-31 22:09:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,568 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2024-10-31 22:09:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,572 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2024-10-31 22:09:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2024-10-31 22:09:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2024-10-31 22:09:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2024-10-31 22:09:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2024-10-31 22:09:42,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2024-10-31 22:09:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 549 [2024-10-31 22:09:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2024-10-31 22:09:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,599 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 563 [2024-10-31 22:09:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2024-10-31 22:09:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 577 [2024-10-31 22:09:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,636 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2024-10-31 22:09:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,639 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 591 [2024-10-31 22:09:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 596 [2024-10-31 22:09:42,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 605 [2024-10-31 22:09:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 610 [2024-10-31 22:09:42,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,652 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2024-10-31 22:09:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 624 [2024-10-31 22:09:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2024-10-31 22:09:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 638 [2024-10-31 22:09:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:09:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-10-31 22:09:42,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:09:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745968914] [2024-10-31 22:09:42,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745968914] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:09:42,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581599237] [2024-10-31 22:09:42,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-31 22:09:42,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:42,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:09:42,677 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:09:42,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:09:43,312 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 67 check-sat command(s) [2024-10-31 22:09:43,313 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:09:43,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 1227 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-10-31 22:09:43,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:09:43,877 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-10-31 22:09:43,877 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:09:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 23000 backedges. 0 proven. 6256 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2024-10-31 22:09:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581599237] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:09:47,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:09:47,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-10-31 22:09:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047662977] [2024-10-31 22:09:47,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:09:47,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-10-31 22:09:47,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:09:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-10-31 22:09:47,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-31 22:09:47,964 INFO L87 Difference]: Start difference. First operand 333 states and 516 transitions. Second operand has 97 states, 97 states have (on average 3.9587628865979383) internal successors, (384), 97 states have internal predecessors, (384), 93 states have call successors, (186), 1 states have call predecessors, (186), 1 states have return successors, (186), 93 states have call predecessors, (186), 93 states have call successors, (186) [2024-10-31 22:09:50,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:09:50,446 INFO L93 Difference]: Finished difference Result 673 states and 1095 transitions. [2024-10-31 22:09:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-10-31 22:09:50,449 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.9587628865979383) internal successors, (384), 97 states have internal predecessors, (384), 93 states have call successors, (186), 1 states have call predecessors, (186), 1 states have return successors, (186), 93 states have call predecessors, (186), 93 states have call successors, (186) Word has length 650 [2024-10-31 22:09:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:09:50,455 INFO L225 Difference]: With dead ends: 673 [2024-10-31 22:09:50,455 INFO L226 Difference]: Without dead ends: 669 [2024-10-31 22:09:50,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1531 GetRequests, 1436 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-10-31 22:09:50,462 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 1365 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-31 22:09:50,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1369 Valid, 515 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-31 22:09:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2024-10-31 22:09:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2024-10-31 22:09:50,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 479 states have (on average 1.394572025052192) internal successors, (668), 479 states have internal predecessors, (668), 188 states have call successors, (188), 1 states have call predecessors, (188), 1 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-10-31 22:09:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 1044 transitions. [2024-10-31 22:09:50,521 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 1044 transitions. Word has length 650 [2024-10-31 22:09:50,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:09:50,526 INFO L471 AbstractCegarLoop]: Abstraction has 669 states and 1044 transitions. [2024-10-31 22:09:50,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.9587628865979383) internal successors, (384), 97 states have internal predecessors, (384), 93 states have call successors, (186), 1 states have call predecessors, (186), 1 states have return successors, (186), 93 states have call predecessors, (186), 93 states have call successors, (186) [2024-10-31 22:09:50,527 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 1044 transitions. [2024-10-31 22:09:50,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1323 [2024-10-31 22:09:50,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:09:50,594 INFO L215 NwaCegarLoop]: trace histogram [188, 188, 188, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1] [2024-10-31 22:09:50,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:09:50,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d30a6d21-c72c-4c6d-abab-71c478a80255/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:09:50,798 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:09:50,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:09:50,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1160905654, now seen corresponding path program 6 times [2024-10-31 22:09:50,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:09:50,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701568175] [2024-10-31 22:09:50,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:09:50,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:09:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat