./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0642f258b99d0be7a55bf1ef77240ba2f36dd3da56337cf262b8aebc4e0cc323 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:19:29,313 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:19:29,434 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:19:29,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:19:29,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:19:29,485 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:19:29,485 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:19:29,486 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:19:29,487 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:19:29,492 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:19:29,492 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:19:29,493 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:19:29,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:19:29,496 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:19:29,496 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:19:29,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:19:29,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:19:29,497 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:19:29,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:19:29,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:19:29,499 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:19:29,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:19:29,500 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:19:29,500 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:19:29,500 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:19:29,501 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:19:29,501 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:19:29,502 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:19:29,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:19:29,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:19:29,504 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:19:29,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:19:29,505 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:19:29,505 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:19:29,505 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:19:29,505 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:19:29,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:19:29,506 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:19:29,506 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:19:29,506 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:19:29,506 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:19:29,507 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:19:29,507 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_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0642f258b99d0be7a55bf1ef77240ba2f36dd3da56337cf262b8aebc4e0cc323 [2023-11-21 22:19:29,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:19:29,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:19:29,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:19:29,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:19:29,884 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:19:29,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2023-11-21 22:19:33,110 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:19:33,338 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:19:33,340 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c [2023-11-21 22:19:33,354 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/data/b2d5ed1bf/8cd829c6a08e4ae6b5a0c313d3a80dc6/FLAG683f77948 [2023-11-21 22:19:33,376 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/data/b2d5ed1bf/8cd829c6a08e4ae6b5a0c313d3a80dc6 [2023-11-21 22:19:33,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:19:33,385 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:19:33,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:19:33,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:19:33,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:19:33,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86ec73c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33, skipping insertion in model container [2023-11-21 22:19:33,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,423 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:19:33,657 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c[951,964] [2023-11-21 22:19:33,662 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:19:33,679 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:19:33,695 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/sv-benchmarks/c/recursive-simple/fibo_2calls_20-1.c[951,964] [2023-11-21 22:19:33,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:19:33,712 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:19:33,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33 WrapperNode [2023-11-21 22:19:33,713 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:19:33,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:19:33,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:19:33,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:19:33,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,730 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,777 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2023-11-21 22:19:33,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:19:33,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:19:33,780 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:19:33,780 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:19:33,791 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,793 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,812 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:19:33,812 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,812 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,815 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,818 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,820 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:19:33,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:19:33,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:19:33,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:19:33,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (1/1) ... [2023-11-21 22:19:33,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:19:33,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:33,895 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:19:33,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:19:33,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:19:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:19:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-21 22:19:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-21 22:19:33,929 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-21 22:19:33,929 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-21 22:19:33,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:19:33,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:19:33,993 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:19:33,996 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:19:34,141 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:19:34,166 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:19:34,167 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:19:34,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:34 BoogieIcfgContainer [2023-11-21 22:19:34,169 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:19:34,171 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:19:34,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:19:34,175 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:19:34,175 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:19:33" (1/3) ... [2023-11-21 22:19:34,176 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d4ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:34, skipping insertion in model container [2023-11-21 22:19:34,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:33" (2/3) ... [2023-11-21 22:19:34,177 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@733d4ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:34, skipping insertion in model container [2023-11-21 22:19:34,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:34" (3/3) ... [2023-11-21 22:19:34,179 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2023-11-21 22:19:34,196 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:19:34,197 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:19:34,247 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:19:34,254 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@112319f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:19:34,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:19:34,259 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 22:19:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:19:34,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:34,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:34,269 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:34,275 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash -389521846, now seen corresponding path program 1 times [2023-11-21 22:19:34,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:34,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478132015] [2023-11-21 22:19:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:34,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:34,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:34,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:34,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478132015] [2023-11-21 22:19:34,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478132015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:34,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:34,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:19:34,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015580504] [2023-11-21 22:19:34,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:34,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:19:34,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:34,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:19:34,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:19:34,751 INFO L87 Difference]: Start difference. First operand has 26 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:34,841 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-11-21 22:19:34,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:19:34,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-21 22:19:34,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:34,854 INFO L225 Difference]: With dead ends: 35 [2023-11-21 22:19:34,854 INFO L226 Difference]: Without dead ends: 26 [2023-11-21 22:19:34,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:19:34,861 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:34,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 108 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:19:34,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-21 22:19:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-21 22:19:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-21 22:19:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-11-21 22:19:34,901 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-11-21 22:19:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:34,902 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-11-21 22:19:34,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-11-21 22:19:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 22:19:34,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:34,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:34,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:19:34,905 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:34,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1524884472, now seen corresponding path program 1 times [2023-11-21 22:19:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:34,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946699647] [2023-11-21 22:19:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:35,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:35,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946699647] [2023-11-21 22:19:35,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946699647] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:35,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:35,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:19:35,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133739334] [2023-11-21 22:19:35,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:35,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:19:35,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:35,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:19:35,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:19:35,008 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:35,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:35,031 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2023-11-21 22:19:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:19:35,032 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-11-21 22:19:35,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:35,034 INFO L225 Difference]: With dead ends: 32 [2023-11-21 22:19:35,034 INFO L226 Difference]: Without dead ends: 28 [2023-11-21 22:19:35,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:19:35,036 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:35,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:19:35,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-21 22:19:35,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2023-11-21 22:19:35,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2023-11-21 22:19:35,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-11-21 22:19:35,047 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 10 [2023-11-21 22:19:35,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:35,048 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-11-21 22:19:35,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:35,048 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-11-21 22:19:35,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 22:19:35,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:35,050 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:35,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:19:35,051 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:35,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:35,053 INFO L85 PathProgramCache]: Analyzing trace with hash 741502751, now seen corresponding path program 1 times [2023-11-21 22:19:35,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:35,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564338503] [2023-11-21 22:19:35,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:35,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:19:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:35,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:35,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564338503] [2023-11-21 22:19:35,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564338503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:35,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684901741] [2023-11-21 22:19:35,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:35,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:35,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:35,398 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:35,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:19:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:35,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:19:35,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:35,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:35,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:35,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684901741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:35,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:35,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 13 [2023-11-21 22:19:35,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576540722] [2023-11-21 22:19:35,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:35,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:19:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:35,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:19:35,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:19:35,980 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:19:36,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:36,217 INFO L93 Difference]: Finished difference Result 54 states and 74 transitions. [2023-11-21 22:19:36,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:19:36,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) Word has length 22 [2023-11-21 22:19:36,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:36,222 INFO L225 Difference]: With dead ends: 54 [2023-11-21 22:19:36,222 INFO L226 Difference]: Without dead ends: 30 [2023-11-21 22:19:36,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:19:36,230 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 36 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:36,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 101 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:19:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-11-21 22:19:36,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2023-11-21 22:19:36,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 20 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 4 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:19:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2023-11-21 22:19:36,252 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 22 [2023-11-21 22:19:36,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:36,253 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2023-11-21 22:19:36,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 3.1) internal successors, (31), 13 states have internal predecessors, (31), 8 states have call successors, (8), 1 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 22:19:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2023-11-21 22:19:36,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 22:19:36,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:36,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:36,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:36,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:36,473 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:36,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1785876995, now seen corresponding path program 1 times [2023-11-21 22:19:36,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866155193] [2023-11-21 22:19:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:36,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:36,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:36,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866155193] [2023-11-21 22:19:36,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866155193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:36,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946177055] [2023-11-21 22:19:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:36,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:36,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:36,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:36,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:19:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:19:36,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:36,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:37,057 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946177055] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:37,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:37,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-11-21 22:19:37,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957111014] [2023-11-21 22:19:37,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:37,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:19:37,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:37,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:19:37,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:19:37,069 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:19:37,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:37,221 INFO L93 Difference]: Finished difference Result 50 states and 70 transitions. [2023-11-21 22:19:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:19:37,222 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) Word has length 23 [2023-11-21 22:19:37,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:37,230 INFO L225 Difference]: With dead ends: 50 [2023-11-21 22:19:37,231 INFO L226 Difference]: Without dead ends: 46 [2023-11-21 22:19:37,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:19:37,234 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:37,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 81 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:19:37,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-21 22:19:37,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2023-11-21 22:19:37,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 30 states have internal predecessors, (37), 9 states have call successors, (9), 4 states have call predecessors, (9), 5 states have return successors, (15), 9 states have call predecessors, (15), 9 states have call successors, (15) [2023-11-21 22:19:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 61 transitions. [2023-11-21 22:19:37,256 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 61 transitions. Word has length 23 [2023-11-21 22:19:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:37,262 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 61 transitions. [2023-11-21 22:19:37,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 13 states have internal predecessors, (31), 7 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:19:37,262 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 61 transitions. [2023-11-21 22:19:37,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-21 22:19:37,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:37,265 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:37,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:37,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:37,474 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:37,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:37,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1754399412, now seen corresponding path program 1 times [2023-11-21 22:19:37,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:37,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447962426] [2023-11-21 22:19:37,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:37,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:37,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:19:37,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 22:19:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:19:37,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:37,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447962426] [2023-11-21 22:19:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447962426] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110258292] [2023-11-21 22:19:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:37,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:37,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:37,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:37,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:19:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:19:37,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:37,887 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:19:37,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:38,283 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:19:38,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110258292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:38,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:38,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 15 [2023-11-21 22:19:38,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842202749] [2023-11-21 22:19:38,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:38,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 22:19:38,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:38,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 22:19:38,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:19:38,289 INFO L87 Difference]: Start difference. First operand 44 states and 61 transitions. Second operand has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-21 22:19:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:38,557 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2023-11-21 22:19:38,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:19:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) Word has length 35 [2023-11-21 22:19:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:38,563 INFO L225 Difference]: With dead ends: 104 [2023-11-21 22:19:38,563 INFO L226 Difference]: Without dead ends: 62 [2023-11-21 22:19:38,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-21 22:19:38,569 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 53 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:38,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 125 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:19:38,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-21 22:19:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2023-11-21 22:19:38,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 40 states have (on average 1.25) internal successors, (50), 43 states have internal predecessors, (50), 12 states have call successors, (12), 5 states have call predecessors, (12), 9 states have return successors, (29), 13 states have call predecessors, (29), 12 states have call successors, (29) [2023-11-21 22:19:38,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2023-11-21 22:19:38,587 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 35 [2023-11-21 22:19:38,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:38,587 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2023-11-21 22:19:38,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 15 states have internal predecessors, (46), 11 states have call successors, (13), 1 states have call predecessors, (13), 5 states have return successors, (13), 3 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-21 22:19:38,588 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2023-11-21 22:19:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:19:38,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:38,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:38,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:38,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:38,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:38,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash 2101254926, now seen corresponding path program 1 times [2023-11-21 22:19:38,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:38,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12709474] [2023-11-21 22:19:38,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:38,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:38,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:38,998 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:19:38,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12709474] [2023-11-21 22:19:38,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12709474] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:38,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632365994] [2023-11-21 22:19:38,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:38,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:38,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:39,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:39,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:19:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:39,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:19:39,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:39,182 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:19:39,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:19:39,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632365994] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:39,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:39,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 18 [2023-11-21 22:19:39,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539312991] [2023-11-21 22:19:39,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:39,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 22:19:39,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:39,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 22:19:39,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:19:39,559 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-21 22:19:39,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:39,979 INFO L93 Difference]: Finished difference Result 176 states and 320 transitions. [2023-11-21 22:19:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:19:39,980 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) Word has length 36 [2023-11-21 22:19:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:39,987 INFO L225 Difference]: With dead ends: 176 [2023-11-21 22:19:39,987 INFO L226 Difference]: Without dead ends: 116 [2023-11-21 22:19:39,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 76 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=530, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:19:39,991 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:39,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 282 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:19:39,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-21 22:19:40,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 102. [2023-11-21 22:19:40,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 68 states have internal predecessors, (79), 21 states have call successors, (21), 7 states have call predecessors, (21), 15 states have return successors, (65), 26 states have call predecessors, (65), 21 states have call successors, (65) [2023-11-21 22:19:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 165 transitions. [2023-11-21 22:19:40,042 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 165 transitions. Word has length 36 [2023-11-21 22:19:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:40,043 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 165 transitions. [2023-11-21 22:19:40,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.0625) internal successors, (49), 18 states have internal predecessors, (49), 11 states have call successors, (13), 1 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 11 states have call successors, (13) [2023-11-21 22:19:40,045 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 165 transitions. [2023-11-21 22:19:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-21 22:19:40,055 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:40,056 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:40,082 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:40,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-21 22:19:40,270 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:40,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:40,271 INFO L85 PathProgramCache]: Analyzing trace with hash 644290867, now seen corresponding path program 1 times [2023-11-21 22:19:40,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:40,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089617368] [2023-11-21 22:19:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:40,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:19:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-21 22:19:40,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089617368] [2023-11-21 22:19:40,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089617368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:40,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375623298] [2023-11-21 22:19:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:40,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:40,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:40,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:40,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:19:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:40,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:19:40,584 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:40,701 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-21 22:19:40,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 4 proven. 28 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:19:41,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375623298] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:41,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:41,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 20 [2023-11-21 22:19:41,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629019768] [2023-11-21 22:19:41,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:41,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:19:41,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:41,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:19:41,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:19:41,379 INFO L87 Difference]: Start difference. First operand 102 states and 165 transitions. Second operand has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-21 22:19:41,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:41,805 INFO L93 Difference]: Finished difference Result 254 states and 494 transitions. [2023-11-21 22:19:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:19:41,806 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) Word has length 50 [2023-11-21 22:19:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:41,810 INFO L225 Difference]: With dead ends: 254 [2023-11-21 22:19:41,810 INFO L226 Difference]: Without dead ends: 154 [2023-11-21 22:19:41,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=662, Unknown=0, NotChecked=0, Total=812 [2023-11-21 22:19:41,813 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 45 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:41,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 254 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:19:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-21 22:19:41,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 108. [2023-11-21 22:19:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 71 states have internal predecessors, (86), 24 states have call successors, (24), 9 states have call predecessors, (24), 13 states have return successors, (66), 27 states have call predecessors, (66), 24 states have call successors, (66) [2023-11-21 22:19:41,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 176 transitions. [2023-11-21 22:19:41,836 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 176 transitions. Word has length 50 [2023-11-21 22:19:41,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:41,836 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 176 transitions. [2023-11-21 22:19:41,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 20 states have internal predecessors, (59), 14 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (18), 7 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-21 22:19:41,837 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 176 transitions. [2023-11-21 22:19:41,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-21 22:19:41,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:41,840 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:41,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:42,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 22:19:42,061 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:42,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash 18580375, now seen corresponding path program 1 times [2023-11-21 22:19:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:42,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043317099] [2023-11-21 22:19:42,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:42,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:19:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,521 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 39 proven. 38 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-21 22:19:42,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:42,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043317099] [2023-11-21 22:19:42,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043317099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:42,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928128892] [2023-11-21 22:19:42,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:42,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:42,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:42,523 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:42,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:19:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:42,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:19:42,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 68 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-21 22:19:42,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 12 proven. 78 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-21 22:19:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928128892] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:43,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 13] total 24 [2023-11-21 22:19:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741968844] [2023-11-21 22:19:43,824 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:43,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-21 22:19:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:43,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-21 22:19:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:19:43,827 INFO L87 Difference]: Start difference. First operand 108 states and 176 transitions. Second operand has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 18 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (25), 11 states have call predecessors, (25), 18 states have call successors, (25) [2023-11-21 22:19:44,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:44,446 INFO L93 Difference]: Finished difference Result 239 states and 461 transitions. [2023-11-21 22:19:44,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-21 22:19:44,447 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 18 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (25), 11 states have call predecessors, (25), 18 states have call successors, (25) Word has length 78 [2023-11-21 22:19:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:44,449 INFO L225 Difference]: With dead ends: 239 [2023-11-21 22:19:44,449 INFO L226 Difference]: Without dead ends: 106 [2023-11-21 22:19:44,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 164 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=221, Invalid=1039, Unknown=0, NotChecked=0, Total=1260 [2023-11-21 22:19:44,453 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 78 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:44,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 260 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:19:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-21 22:19:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 83. [2023-11-21 22:19:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 57 states have internal predecessors, (66), 14 states have call successors, (14), 8 states have call predecessors, (14), 12 states have return successors, (35), 17 states have call predecessors, (35), 14 states have call successors, (35) [2023-11-21 22:19:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 115 transitions. [2023-11-21 22:19:44,468 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 115 transitions. Word has length 78 [2023-11-21 22:19:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:44,469 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 115 transitions. [2023-11-21 22:19:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.3181818181818183) internal successors, (73), 24 states have internal predecessors, (73), 18 states have call successors, (22), 1 states have call predecessors, (22), 9 states have return successors, (25), 11 states have call predecessors, (25), 18 states have call successors, (25) [2023-11-21 22:19:44,470 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 115 transitions. [2023-11-21 22:19:44,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2023-11-21 22:19:44,473 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:44,473 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 14, 13, 13, 13, 9, 9, 9, 9, 9, 9, 9, 8, 6, 6, 6, 6, 6, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:44,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:44,686 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:44,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash 370437973, now seen corresponding path program 1 times [2023-11-21 22:19:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:44,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806634702] [2023-11-21 22:19:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:44,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:45,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:45,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:19:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2023-11-21 22:19:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:45,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 22:19:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:45,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 84 proven. 258 refuted. 0 times theorem prover too weak. 955 trivial. 0 not checked. [2023-11-21 22:19:45,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806634702] [2023-11-21 22:19:45,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806634702] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:45,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621679172] [2023-11-21 22:19:45,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:45,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:45,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:45,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:45,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:19:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:45,741 INFO L262 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:19:45,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:45,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 47 proven. 369 refuted. 0 times theorem prover too weak. 881 trivial. 0 not checked. [2023-11-21 22:19:45,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:47,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1297 backedges. 47 proven. 385 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2023-11-21 22:19:47,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621679172] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:47,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:47,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 15] total 26 [2023-11-21 22:19:47,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702934675] [2023-11-21 22:19:47,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:47,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:19:47,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:47,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:19:47,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:19:47,808 INFO L87 Difference]: Start difference. First operand 83 states and 115 transitions. Second operand has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 26 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (32), 12 states have call predecessors, (32), 20 states have call successors, (32) [2023-11-21 22:19:48,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:48,458 INFO L93 Difference]: Finished difference Result 213 states and 371 transitions. [2023-11-21 22:19:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-21 22:19:48,459 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 26 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (32), 12 states have call predecessors, (32), 20 states have call successors, (32) Word has length 216 [2023-11-21 22:19:48,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:48,461 INFO L225 Difference]: With dead ends: 213 [2023-11-21 22:19:48,462 INFO L226 Difference]: Without dead ends: 133 [2023-11-21 22:19:48,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 475 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:19:48,464 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 84 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:48,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 314 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:19:48,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-21 22:19:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 113. [2023-11-21 22:19:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 77 states have internal predecessors, (92), 20 states have call successors, (20), 11 states have call predecessors, (20), 16 states have return successors, (56), 24 states have call predecessors, (56), 20 states have call successors, (56) [2023-11-21 22:19:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 168 transitions. [2023-11-21 22:19:48,479 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 168 transitions. Word has length 216 [2023-11-21 22:19:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:48,480 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 168 transitions. [2023-11-21 22:19:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 3.4166666666666665) internal successors, (82), 26 states have internal predecessors, (82), 20 states have call successors, (26), 1 states have call predecessors, (26), 10 states have return successors, (32), 12 states have call predecessors, (32), 20 states have call successors, (32) [2023-11-21 22:19:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 168 transitions. [2023-11-21 22:19:48,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-21 22:19:48,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:48,484 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 13, 13, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 4, 3, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:48,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-21 22:19:48,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-21 22:19:48,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:48,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:48,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1656224918, now seen corresponding path program 1 times [2023-11-21 22:19:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:48,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737732057] [2023-11-21 22:19:48,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:48,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:19:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:19:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:49,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-21 22:19:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 167 proven. 260 refuted. 0 times theorem prover too weak. 977 trivial. 0 not checked. [2023-11-21 22:19:49,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:49,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737732057] [2023-11-21 22:19:49,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737732057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:49,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095245995] [2023-11-21 22:19:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:49,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:49,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:49,847 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:49,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 22:19:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:50,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-21 22:19:50,021 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 418 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2023-11-21 22:19:50,211 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:52,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 77 proven. 442 refuted. 0 times theorem prover too weak. 885 trivial. 0 not checked. [2023-11-21 22:19:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095245995] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:52,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 17] total 28 [2023-11-21 22:19:52,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398261843] [2023-11-21 22:19:52,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:52,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-21 22:19:52,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-21 22:19:52,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:19:52,666 INFO L87 Difference]: Start difference. First operand 113 states and 168 transitions. Second operand has 28 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 28 states have internal predecessors, (90), 22 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (37), 14 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-21 22:19:53,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:53,611 INFO L93 Difference]: Finished difference Result 259 states and 446 transitions. [2023-11-21 22:19:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-21 22:19:53,612 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 28 states have internal predecessors, (90), 22 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (37), 14 states have call predecessors, (37), 22 states have call successors, (37) Word has length 227 [2023-11-21 22:19:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:53,620 INFO L225 Difference]: With dead ends: 259 [2023-11-21 22:19:53,620 INFO L226 Difference]: Without dead ends: 154 [2023-11-21 22:19:53,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 498 SyntacticMatches, 7 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=342, Invalid=1638, Unknown=0, NotChecked=0, Total=1980 [2023-11-21 22:19:53,625 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 88 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:53,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 339 Invalid, 722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:19:53,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-21 22:19:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 144. [2023-11-21 22:19:53,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 100 states have (on average 1.24) internal successors, (124), 98 states have internal predecessors, (124), 26 states have call successors, (26), 18 states have call predecessors, (26), 17 states have return successors, (73), 27 states have call predecessors, (73), 26 states have call successors, (73) [2023-11-21 22:19:53,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 223 transitions. [2023-11-21 22:19:53,652 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 223 transitions. Word has length 227 [2023-11-21 22:19:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:53,653 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 223 transitions. [2023-11-21 22:19:53,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 28 states have internal predecessors, (90), 22 states have call successors, (28), 1 states have call predecessors, (28), 11 states have return successors, (37), 14 states have call predecessors, (37), 22 states have call successors, (37) [2023-11-21 22:19:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 223 transitions. [2023-11-21 22:19:53,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 487 [2023-11-21 22:19:53,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:53,669 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 33, 33, 29, 28, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 16, 16, 16, 16, 12, 10, 10, 4, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:53,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:53,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:19:53,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:53,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:53,886 INFO L85 PathProgramCache]: Analyzing trace with hash -14112611, now seen corresponding path program 2 times [2023-11-21 22:19:53,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:53,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990497441] [2023-11-21 22:19:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:53,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:19:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:19:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:19:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:55,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-21 22:19:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:19:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-21 22:19:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:19:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-21 22:19:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-21 22:19:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:19:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:19:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:56,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:19:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6872 backedges. 265 proven. 869 refuted. 0 times theorem prover too weak. 5738 trivial. 0 not checked. [2023-11-21 22:19:56,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:56,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990497441] [2023-11-21 22:19:56,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990497441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:56,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816660876] [2023-11-21 22:19:56,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:19:56,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:56,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:56,448 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:56,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 22:19:56,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:19:56,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:19:56,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-21 22:19:56,808 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 6872 backedges. 159 proven. 1240 refuted. 0 times theorem prover too weak. 5473 trivial. 0 not checked. [2023-11-21 22:19:57,053 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:20:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6872 backedges. 159 proven. 1273 refuted. 0 times theorem prover too weak. 5440 trivial. 0 not checked. [2023-11-21 22:20:01,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816660876] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:20:01,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:20:01,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 30 [2023-11-21 22:20:01,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214040277] [2023-11-21 22:20:01,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:20:01,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-21 22:20:01,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:20:01,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-21 22:20:01,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2023-11-21 22:20:01,126 INFO L87 Difference]: Start difference. First operand 144 states and 223 transitions. Second operand has 30 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 30 states have internal predecessors, (96), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (40), 15 states have call predecessors, (40), 24 states have call successors, (40) [2023-11-21 22:20:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:20:02,049 INFO L93 Difference]: Finished difference Result 333 states and 593 transitions. [2023-11-21 22:20:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-21 22:20:02,050 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 30 states have internal predecessors, (96), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (40), 15 states have call predecessors, (40), 24 states have call successors, (40) Word has length 486 [2023-11-21 22:20:02,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:20:02,056 INFO L225 Difference]: With dead ends: 333 [2023-11-21 22:20:02,056 INFO L226 Difference]: Without dead ends: 196 [2023-11-21 22:20:02,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1090 SyntacticMatches, 8 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=406, Invalid=2044, Unknown=0, NotChecked=0, Total=2450 [2023-11-21 22:20:02,066 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 104 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:20:02,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 326 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:20:02,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-21 22:20:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 172. [2023-11-21 22:20:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 121 states have (on average 1.2148760330578512) internal successors, (147), 117 states have internal predecessors, (147), 32 states have call successors, (32), 24 states have call predecessors, (32), 18 states have return successors, (92), 30 states have call predecessors, (92), 32 states have call successors, (92) [2023-11-21 22:20:02,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 271 transitions. [2023-11-21 22:20:02,098 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 271 transitions. Word has length 486 [2023-11-21 22:20:02,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:20:02,100 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 271 transitions. [2023-11-21 22:20:02,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 3.4285714285714284) internal successors, (96), 30 states have internal predecessors, (96), 24 states have call successors, (30), 1 states have call predecessors, (30), 12 states have return successors, (40), 15 states have call predecessors, (40), 24 states have call successors, (40) [2023-11-21 22:20:02,101 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 271 transitions. [2023-11-21 22:20:02,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2023-11-21 22:20:02,116 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:20:02,116 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 37, 37, 31, 30, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 18, 18, 18, 18, 13, 11, 7, 7, 1, 1, 1, 1, 1, 1] [2023-11-21 22:20:02,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:20:02,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:20:02,342 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:20:02,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:20:02,343 INFO L85 PathProgramCache]: Analyzing trace with hash 786787621, now seen corresponding path program 3 times [2023-11-21 22:20:02,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:20:02,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483152972] [2023-11-21 22:20:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:20:02,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:20:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:03,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:20:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:04,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:04,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:04,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:04,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:04,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:20:05,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2023-11-21 22:20:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-21 22:20:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:20:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2023-11-21 22:20:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:05,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:06,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:20:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 1371 proven. 967 refuted. 0 times theorem prover too weak. 5334 trivial. 0 not checked. [2023-11-21 22:20:06,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:20:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483152972] [2023-11-21 22:20:06,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483152972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:20:06,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104204604] [2023-11-21 22:20:06,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:20:06,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:20:06,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:20:06,256 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:20:06,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 22:20:06,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-21 22:20:06,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:20:06,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:20:06,513 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:20:06,672 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 812 proven. 127 refuted. 0 times theorem prover too weak. 6733 trivial. 0 not checked. [2023-11-21 22:20:06,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:20:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 7672 backedges. 816 proven. 133 refuted. 0 times theorem prover too weak. 6723 trivial. 0 not checked. [2023-11-21 22:20:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104204604] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:20:08,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:20:08,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 10, 13] total 38 [2023-11-21 22:20:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816438103] [2023-11-21 22:20:08,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:20:08,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-21 22:20:08,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:20:08,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-21 22:20:08,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1211, Unknown=0, NotChecked=0, Total=1406 [2023-11-21 22:20:08,826 INFO L87 Difference]: Start difference. First operand 172 states and 271 transitions. Second operand has 38 states, 36 states have (on average 2.888888888888889) internal successors, (104), 38 states have internal predecessors, (104), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 32 states have call predecessors, (47), 24 states have call successors, (47) [2023-11-21 22:20:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:20:10,062 INFO L93 Difference]: Finished difference Result 421 states and 755 transitions. [2023-11-21 22:20:10,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-21 22:20:10,063 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.888888888888889) internal successors, (104), 38 states have internal predecessors, (104), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 32 states have call predecessors, (47), 24 states have call successors, (47) Word has length 514 [2023-11-21 22:20:10,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:20:10,069 INFO L225 Difference]: With dead ends: 421 [2023-11-21 22:20:10,069 INFO L226 Difference]: Without dead ends: 250 [2023-11-21 22:20:10,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1163 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1282 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=521, Invalid=3261, Unknown=0, NotChecked=0, Total=3782 [2023-11-21 22:20:10,076 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 155 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 1019 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1019 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:20:10,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 565 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1019 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:20:10,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-21 22:20:10,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 228. [2023-11-21 22:20:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 164 states have (on average 1.103658536585366) internal successors, (181), 156 states have internal predecessors, (181), 45 states have call successors, (45), 39 states have call predecessors, (45), 18 states have return successors, (103), 32 states have call predecessors, (103), 45 states have call successors, (103) [2023-11-21 22:20:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 329 transitions. [2023-11-21 22:20:10,114 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 329 transitions. Word has length 514 [2023-11-21 22:20:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:20:10,115 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 329 transitions. [2023-11-21 22:20:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.888888888888889) internal successors, (104), 38 states have internal predecessors, (104), 24 states have call successors, (36), 1 states have call predecessors, (36), 16 states have return successors, (47), 32 states have call predecessors, (47), 24 states have call successors, (47) [2023-11-21 22:20:10,116 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 329 transitions. [2023-11-21 22:20:10,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 705 [2023-11-21 22:20:10,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:20:10,127 INFO L195 NwaCegarLoop]: trace histogram [54, 54, 49, 49, 42, 41, 27, 27, 27, 27, 27, 27, 27, 24, 24, 24, 24, 24, 24, 24, 18, 14, 12, 8, 1, 1, 1, 1, 1, 1] [2023-11-21 22:20:10,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:20:10,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:20:10,354 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:20:10,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:20:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash 2144756501, now seen corresponding path program 4 times [2023-11-21 22:20:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:20:10,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020683314] [2023-11-21 22:20:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:20:10,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:20:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:20:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:12,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:20:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:20:14,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-21 22:20:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2023-11-21 22:20:14,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:14,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-21 22:20:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-21 22:20:14,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2023-11-21 22:20:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:20:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 22:20:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:20:14,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:20:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-21 22:20:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:20:14,741 INFO L134 CoverageAnalysis]: Checked inductivity of 14617 backedges. 606 proven. 1959 refuted. 0 times theorem prover too weak. 12052 trivial. 0 not checked. [2023-11-21 22:20:14,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:20:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020683314] [2023-11-21 22:20:14,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020683314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:20:14,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202612676] [2023-11-21 22:20:14,742 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:20:14,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:20:14,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:20:14,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:20:14,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2947ea83-fecf-4204-9226-1e42ae55e961/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 22:20:15,117 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:20:15,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:20:15,123 INFO L262 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-21 22:20:15,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:20:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 14617 backedges. 7066 proven. 427 refuted. 0 times theorem prover too weak. 7124 trivial. 0 not checked. [2023-11-21 22:20:15,374 INFO L327 TraceCheckSpWp]: Computing backward predicates...