./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6ae2ee47 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:43:44,933 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:43:44,997 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-22 18:43:45,019 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:43:45,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:43:45,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:43:45,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:43:45,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:43:45,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:43:45,057 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:43:45,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:43:45,057 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:43:45,058 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:43:45,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:43:45,059 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:43:45,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:43:45,060 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:43:45,060 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-22 18:43:45,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:43:45,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-22 18:43:45,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:43:45,062 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:43:45,062 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:43:45,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:43:45,062 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-22 18:43:45,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:43:45,063 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:43:45,063 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:43:45,063 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:43:45,064 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:43:45,064 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:43:45,064 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:43:45,065 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:43:45,065 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:43:45,065 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:43:45,065 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:43:45,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:43:45,066 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:43:45,066 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:43:45,066 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:43:45,066 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:43:45,067 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:43:45,067 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee7ff83d9ca4f9baaadd009c98a7dd30697b6140296199117a6b05757b5b9f74 [2023-11-22 18:43:45,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:43:45,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:43:45,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:43:45,295 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:43:45,295 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:43:45,296 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-pthread/cs_dekker.i [2023-11-22 18:43:46,293 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:43:46,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:43:46,587 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_dekker.i [2023-11-22 18:43:46,605 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc6dc801/7cdfa6c48a494abcb414385bd6da0a8f/FLAGa605cc3cd [2023-11-22 18:43:46,615 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dc6dc801/7cdfa6c48a494abcb414385bd6da0a8f [2023-11-22 18:43:46,617 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:43:46,618 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:43:46,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:43:46,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:43:46,624 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:43:46,625 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:43:46" (1/1) ... [2023-11-22 18:43:46,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3863cb2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:46, skipping insertion in model container [2023-11-22 18:43:46,626 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:43:46" (1/1) ... [2023-11-22 18:43:46,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:43:46,914 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_dekker.i[23603,23616] [2023-11-22 18:43:47,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:43:47,026 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:43:47,054 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-pthread/cs_dekker.i[23603,23616] [2023-11-22 18:43:47,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:43:47,134 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:43:47,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47 WrapperNode [2023-11-22 18:43:47,135 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:43:47,136 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:43:47,136 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:43:47,136 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:43:47,141 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,192 INFO L138 Inliner]: procedures = 145, calls = 300, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 455 [2023-11-22 18:43:47,193 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:43:47,193 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:43:47,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:43:47,194 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:43:47,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,204 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,210 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,226 INFO L189 HeapSplitter]: Split 150 memory accesses to 16 slices as follows [2, 13, 8, 8, 29, 21, 7, 7, 9, 7, 5, 5, 6, 5, 5, 13] [2023-11-22 18:43:47,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,227 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,245 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,264 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,272 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:43:47,273 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:43:47,273 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:43:47,273 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:43:47,274 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (1/1) ... [2023-11-22 18:43:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:43:47,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:47,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-22 18:43:47,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-22 18:43:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:43:47,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:43:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:43:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:43:47,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:43:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:43:47,359 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:43:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:43:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:43:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:43:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-22 18:43:47,360 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:43:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:43:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:43:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:43:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-22 18:43:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-22 18:43:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-22 18:43:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-22 18:43:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-22 18:43:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-22 18:43:47,364 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 18:43:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 18:43:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:43:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:43:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 18:43:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 18:43:47,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 18:43:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-22 18:43:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-22 18:43:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-22 18:43:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-22 18:43:47,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#10 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#11 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#12 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#13 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#14 [2023-11-22 18:43:47,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#15 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2023-11-22 18:43:47,368 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-22 18:43:47,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-22 18:43:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-22 18:43:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-22 18:43:47,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-22 18:43:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-22 18:43:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#10 [2023-11-22 18:43:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#11 [2023-11-22 18:43:47,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#12 [2023-11-22 18:43:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#13 [2023-11-22 18:43:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#14 [2023-11-22 18:43:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#15 [2023-11-22 18:43:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2023-11-22 18:43:47,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2023-11-22 18:43:47,371 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-22 18:43:47,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-22 18:43:47,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-22 18:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-22 18:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-22 18:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-22 18:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-22 18:43:47,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-22 18:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#10 [2023-11-22 18:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#11 [2023-11-22 18:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#12 [2023-11-22 18:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#13 [2023-11-22 18:43:47,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#14 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#15 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2023-11-22 18:43:47,375 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:43:47,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 18:43:47,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 18:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 18:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 18:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 18:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 18:43:47,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:43:47,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:43:47,597 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:43:47,598 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:43:48,114 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:43:48,153 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:43:48,153 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-22 18:43:48,154 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:43:48 BoogieIcfgContainer [2023-11-22 18:43:48,154 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:43:48,155 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:43:48,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:43:48,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:43:48,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:43:46" (1/3) ... [2023-11-22 18:43:48,158 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4491039b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:43:48, skipping insertion in model container [2023-11-22 18:43:48,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:43:47" (2/3) ... [2023-11-22 18:43:48,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4491039b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:43:48, skipping insertion in model container [2023-11-22 18:43:48,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:43:48" (3/3) ... [2023-11-22 18:43:48,161 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_dekker.i [2023-11-22 18:43:48,174 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:43:48,174 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:43:48,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:43:48,223 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;@6d50f329, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:43:48,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:43:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 113 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 72 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:43:48,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-22 18:43:48,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:48,256 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:48,256 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:48,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash 405785806, now seen corresponding path program 1 times [2023-11-22 18:43:48,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:48,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934275380] [2023-11-22 18:43:48,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:48,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:43:48,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:43:48,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:43:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-22 18:43:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:43:48,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 18:43:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:43:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:43:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:43:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 18:43:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 18:43:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:43:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:43:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:43:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 18:43:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:43:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:43:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:43:48,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:43:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:48,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934275380] [2023-11-22 18:43:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934275380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:48,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:48,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 18:43:48,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740561737] [2023-11-22 18:43:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 18:43:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:48,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 18:43:48,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 18:43:48,761 INFO L87 Difference]: Start difference. First operand has 113 states, 71 states have (on average 1.3661971830985915) internal successors, (97), 72 states have internal predecessors, (97), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:48,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:48,810 INFO L93 Difference]: Finished difference Result 225 states and 366 transitions. [2023-11-22 18:43:48,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 18:43:48,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 131 [2023-11-22 18:43:48,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:48,820 INFO L225 Difference]: With dead ends: 225 [2023-11-22 18:43:48,820 INFO L226 Difference]: Without dead ends: 111 [2023-11-22 18:43:48,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 18:43:48,831 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:48,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:43:48,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-22 18:43:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-22 18:43:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:43:48,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 161 transitions. [2023-11-22 18:43:48,881 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 161 transitions. Word has length 131 [2023-11-22 18:43:48,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:48,881 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 161 transitions. [2023-11-22 18:43:48,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:48,882 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 161 transitions. [2023-11-22 18:43:48,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-22 18:43:48,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:48,890 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:48,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:43:48,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:48,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash 194506872, now seen corresponding path program 1 times [2023-11-22 18:43:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:48,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542665897] [2023-11-22 18:43:48,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 18:43:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:49,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:43:49,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:43:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-22 18:43:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:43:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 18:43:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:43:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:43:49,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:43:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 18:43:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 18:43:49,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:43:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:43:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:43:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 18:43:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:43:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:43:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:43:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:43:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542665897] [2023-11-22 18:43:49,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542665897] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:49,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:49,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:43:49,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707594390] [2023-11-22 18:43:49,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:49,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:43:49,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:49,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:43:49,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:43:49,272 INFO L87 Difference]: Start difference. First operand 111 states and 161 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:49,343 INFO L93 Difference]: Finished difference Result 221 states and 321 transitions. [2023-11-22 18:43:49,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:43:49,344 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 131 [2023-11-22 18:43:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:49,350 INFO L225 Difference]: With dead ends: 221 [2023-11-22 18:43:49,351 INFO L226 Difference]: Without dead ends: 114 [2023-11-22 18:43:49,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:43:49,353 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 3 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:49,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:43:49,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-22 18:43:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2023-11-22 18:43:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.295774647887324) internal successors, (92), 71 states have internal predecessors, (92), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:43:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 162 transitions. [2023-11-22 18:43:49,366 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 162 transitions. Word has length 131 [2023-11-22 18:43:49,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:49,366 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 162 transitions. [2023-11-22 18:43:49,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:49,366 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 162 transitions. [2023-11-22 18:43:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-22 18:43:49,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:49,371 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:49,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:43:49,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:49,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash -835741424, now seen corresponding path program 1 times [2023-11-22 18:43:49,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:49,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301929343] [2023-11-22 18:43:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:49,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:49,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-22 18:43:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-22 18:43:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:43:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-22 18:43:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-22 18:43:49,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 18:43:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-22 18:43:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-22 18:43:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-22 18:43:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:43:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-22 18:43:49,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-22 18:43:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-22 18:43:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-22 18:43:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-22 18:43:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2023-11-22 18:43:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-11-22 18:43:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2023-11-22 18:43:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-22 18:43:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-22 18:43:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:49,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:49,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301929343] [2023-11-22 18:43:49,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301929343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:49,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:49,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 18:43:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567639080] [2023-11-22 18:43:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:43:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:49,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:43:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:43:49,671 INFO L87 Difference]: Start difference. First operand 112 states and 162 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:49,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:49,711 INFO L93 Difference]: Finished difference Result 223 states and 324 transitions. [2023-11-22 18:43:49,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:43:49,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134 [2023-11-22 18:43:49,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:49,714 INFO L225 Difference]: With dead ends: 223 [2023-11-22 18:43:49,714 INFO L226 Difference]: Without dead ends: 113 [2023-11-22 18:43:49,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 18:43:49,720 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:49,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 312 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:43:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-22 18:43:49,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2023-11-22 18:43:49,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 72 states have internal predecessors, (93), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:43:49,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 163 transitions. [2023-11-22 18:43:49,737 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 163 transitions. Word has length 134 [2023-11-22 18:43:49,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:49,738 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 163 transitions. [2023-11-22 18:43:49,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:49,739 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 163 transitions. [2023-11-22 18:43:49,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-11-22 18:43:49,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:49,740 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:49,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 18:43:49,740 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:49,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -918721409, now seen corresponding path program 1 times [2023-11-22 18:43:49,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:49,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30162648] [2023-11-22 18:43:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:49,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-22 18:43:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 18:43:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:43:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:43:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 18:43:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-22 18:43:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 18:43:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-22 18:43:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-22 18:43:49,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 18:43:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 18:43:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-22 18:43:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-22 18:43:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-22 18:43:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2023-11-22 18:43:49,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-22 18:43:49,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:43:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:43:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2023-11-22 18:43:49,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2023-11-22 18:43:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,980 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:49,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:49,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30162648] [2023-11-22 18:43:49,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30162648] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:49,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856115533] [2023-11-22 18:43:49,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:49,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:49,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:49,983 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:43:50,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 18:43:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:43:50,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:50,446 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:50,452 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-11-22 18:43:50,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856115533] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:50,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:50,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-22 18:43:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015277820] [2023-11-22 18:43:50,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:50,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 18:43:50,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:50,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 18:43:50,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:43:50,505 INFO L87 Difference]: Start difference. First operand 113 states and 163 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-11-22 18:43:50,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:50,550 INFO L93 Difference]: Finished difference Result 226 states and 328 transitions. [2023-11-22 18:43:50,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:43:50,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) Word has length 135 [2023-11-22 18:43:50,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:50,552 INFO L225 Difference]: With dead ends: 226 [2023-11-22 18:43:50,552 INFO L226 Difference]: Without dead ends: 115 [2023-11-22 18:43:50,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 307 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:43:50,553 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 0 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:50,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 622 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:43:50,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-22 18:43:50,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2023-11-22 18:43:50,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 74 states have internal predecessors, (95), 35 states have call successors, (35), 5 states have call predecessors, (35), 5 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-22 18:43:50,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 165 transitions. [2023-11-22 18:43:50,559 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 165 transitions. Word has length 135 [2023-11-22 18:43:50,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:50,560 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 165 transitions. [2023-11-22 18:43:50,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 1 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 1 states have call predecessors, (40), 1 states have call successors, (40) [2023-11-22 18:43:50,560 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 165 transitions. [2023-11-22 18:43:50,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-22 18:43:50,561 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:50,562 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:50,576 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-22 18:43:50,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:50,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:50,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:50,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1630487905, now seen corresponding path program 2 times [2023-11-22 18:43:50,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:50,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439935839] [2023-11-22 18:43:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:50,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:43:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-22 18:43:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-22 18:43:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 18:43:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 18:43:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-22 18:43:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:43:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:43:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-22 18:43:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-22 18:43:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 18:43:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-22 18:43:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:43:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 18:43:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:43:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:43:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:43:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:43:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:43:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:50,999 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 766 trivial. 0 not checked. [2023-11-22 18:43:50,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439935839] [2023-11-22 18:43:50,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439935839] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:50,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568880684] [2023-11-22 18:43:50,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:43:51,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:51,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:51,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:43:51,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-22 18:43:51,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:43:51,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:43:51,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:43:51,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:51,532 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 767 trivial. 0 not checked. [2023-11-22 18:43:51,533 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:43:51,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568880684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:51,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:43:51,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-11-22 18:43:51,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672014093] [2023-11-22 18:43:51,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:51,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:43:51,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:51,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:43:51,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:43:51,535 INFO L87 Difference]: Start difference. First operand 115 states and 165 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:51,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:51,593 INFO L93 Difference]: Finished difference Result 219 states and 320 transitions. [2023-11-22 18:43:51,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:43:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 137 [2023-11-22 18:43:51,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:51,601 INFO L225 Difference]: With dead ends: 219 [2023-11-22 18:43:51,601 INFO L226 Difference]: Without dead ends: 173 [2023-11-22 18:43:51,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:43:51,602 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 82 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:51,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 488 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:43:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-22 18:43:51,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2023-11-22 18:43:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 113 states have (on average 1.3274336283185841) internal successors, (150), 113 states have internal predecessors, (150), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (53), 49 states have call predecessors, (53), 49 states have call successors, (53) [2023-11-22 18:43:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 252 transitions. [2023-11-22 18:43:51,628 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 252 transitions. Word has length 137 [2023-11-22 18:43:51,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:51,628 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 252 transitions. [2023-11-22 18:43:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-11-22 18:43:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 252 transitions. [2023-11-22 18:43:51,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2023-11-22 18:43:51,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:51,632 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:51,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 18:43:51,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:51,845 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:51,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:51,845 INFO L85 PathProgramCache]: Analyzing trace with hash 423740329, now seen corresponding path program 1 times [2023-11-22 18:43:51,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:51,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809718871] [2023-11-22 18:43:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:51,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 18:43:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:43:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:43:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:43:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:43:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:43:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:43:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-22 18:43:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-22 18:43:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:43:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:43:52,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:43:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:43:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:43:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:43:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:43:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:43:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:43:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:43:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:43:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:43:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:43:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:43:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:43:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:43:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:43:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:43:52,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-22 18:43:52,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809718871] [2023-11-22 18:43:52,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809718871] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:52,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505923170] [2023-11-22 18:43:52,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:52,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:52,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:52,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:43:52,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-22 18:43:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:43:53,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:53,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-22 18:43:53,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1251 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2023-11-22 18:43:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505923170] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:53,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 4] total 10 [2023-11-22 18:43:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575970848] [2023-11-22 18:43:53,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:53,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:43:53,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:43:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:43:53,411 INFO L87 Difference]: Start difference. First operand 173 states and 252 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-22 18:43:55,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:43:56,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:56,677 INFO L93 Difference]: Finished difference Result 358 states and 522 transitions. [2023-11-22 18:43:56,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:43:56,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) Word has length 215 [2023-11-22 18:43:56,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:56,679 INFO L225 Difference]: With dead ends: 358 [2023-11-22 18:43:56,679 INFO L226 Difference]: Without dead ends: 193 [2023-11-22 18:43:56,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:43:56,681 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 66 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 108 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:56,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 429 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 388 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-22 18:43:56,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-22 18:43:56,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 189. [2023-11-22 18:43:56,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 127 states have (on average 1.3070866141732282) internal successors, (166), 129 states have internal predecessors, (166), 49 states have call successors, (49), 10 states have call predecessors, (49), 12 states have return successors, (57), 49 states have call predecessors, (57), 49 states have call successors, (57) [2023-11-22 18:43:56,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 272 transitions. [2023-11-22 18:43:56,696 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 272 transitions. Word has length 215 [2023-11-22 18:43:56,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:56,696 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 272 transitions. [2023-11-22 18:43:56,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 6 states have internal predecessors, (102), 2 states have call successors, (69), 6 states have call predecessors, (69), 2 states have return successors, (60), 2 states have call predecessors, (60), 2 states have call successors, (60) [2023-11-22 18:43:56,696 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 272 transitions. [2023-11-22 18:43:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-22 18:43:56,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:56,698 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:43:56,714 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-22 18:43:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:56,912 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:56,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash 830561207, now seen corresponding path program 2 times [2023-11-22 18:43:56,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:56,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141975436] [2023-11-22 18:43:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-22 18:43:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:43:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:43:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:43:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:43:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:43:58,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:43:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:43:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:43:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:43:58,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:43:58,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:43:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:43:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:43:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:43:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:43:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:43:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:43:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:43:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:43:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:43:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:43:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:43:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:43:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:43:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:43:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-11-22 18:43:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:58,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2023-11-22 18:43:58,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:58,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141975436] [2023-11-22 18:43:58,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141975436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:58,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:58,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:43:58,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066112096] [2023-11-22 18:43:58,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:58,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:43:58,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:58,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:43:58,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:43:58,202 INFO L87 Difference]: Start difference. First operand 189 states and 272 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-22 18:44:00,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:02,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:04,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:06,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:08,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:11,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:11,492 INFO L93 Difference]: Finished difference Result 507 states and 739 transitions. [2023-11-22 18:44:11,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:44:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 227 [2023-11-22 18:44:11,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:11,494 INFO L225 Difference]: With dead ends: 507 [2023-11-22 18:44:11,494 INFO L226 Difference]: Without dead ends: 355 [2023-11-22 18:44:11,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:44:11,496 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 172 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 58 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 616 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:11,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 616 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 771 Invalid, 5 Unknown, 0 Unchecked, 12.2s Time] [2023-11-22 18:44:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2023-11-22 18:44:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 345. [2023-11-22 18:44:11,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 224 states have (on average 1.3080357142857142) internal successors, (293), 229 states have internal predecessors, (293), 95 states have call successors, (95), 20 states have call predecessors, (95), 25 states have return successors, (118), 95 states have call predecessors, (118), 95 states have call successors, (118) [2023-11-22 18:44:11,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 506 transitions. [2023-11-22 18:44:11,523 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 506 transitions. Word has length 227 [2023-11-22 18:44:11,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:11,523 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 506 transitions. [2023-11-22 18:44:11,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-22 18:44:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 506 transitions. [2023-11-22 18:44:11,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-22 18:44:11,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:11,526 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:44:11,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 18:44:11,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:11,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash 789221143, now seen corresponding path program 1 times [2023-11-22 18:44:11,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:11,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561737824] [2023-11-22 18:44:11,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:11,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 18:44:12,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:44:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:44:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:44:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:44:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:44:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:44:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:44:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:44:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:44:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:44:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:44:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:44:12,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:44:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:44:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:44:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:44:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:44:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:44:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:44:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:44:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:44:12,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:44:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:44:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:44:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:44:12,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:44:12,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-11-22 18:44:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:12,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1319 trivial. 0 not checked. [2023-11-22 18:44:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561737824] [2023-11-22 18:44:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561737824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:44:12,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:44:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:44:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503959340] [2023-11-22 18:44:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:12,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:44:12,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:44:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:44:12,589 INFO L87 Difference]: Start difference. First operand 345 states and 506 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-22 18:44:14,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:16,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:18,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:20,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:23,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:23,253 INFO L93 Difference]: Finished difference Result 631 states and 911 transitions. [2023-11-22 18:44:23,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-22 18:44:23,254 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 227 [2023-11-22 18:44:23,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:23,255 INFO L225 Difference]: With dead ends: 631 [2023-11-22 18:44:23,255 INFO L226 Difference]: Without dead ends: 316 [2023-11-22 18:44:23,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-11-22 18:44:23,257 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 168 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 56 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:23,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 626 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 774 Invalid, 3 Unknown, 0 Unchecked, 9.6s Time] [2023-11-22 18:44:23,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2023-11-22 18:44:23,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 308. [2023-11-22 18:44:23,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 200 states have (on average 1.26) internal successors, (252), 204 states have internal predecessors, (252), 85 states have call successors, (85), 18 states have call predecessors, (85), 22 states have return successors, (99), 85 states have call predecessors, (99), 85 states have call successors, (99) [2023-11-22 18:44:23,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 436 transitions. [2023-11-22 18:44:23,306 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 436 transitions. Word has length 227 [2023-11-22 18:44:23,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:23,306 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 436 transitions. [2023-11-22 18:44:23,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (30), 5 states have call predecessors, (30), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2023-11-22 18:44:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 436 transitions. [2023-11-22 18:44:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-22 18:44:23,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:23,309 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:44:23,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 18:44:23,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash -920679817, now seen corresponding path program 1 times [2023-11-22 18:44:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856361628] [2023-11-22 18:44:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:23,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:44:24,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:44:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:44:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:44:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:44:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:44:24,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:44:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:44:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:44:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:44:24,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:44:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:44:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:44:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:44:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:44:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:44:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:44:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:44:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:44:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:44:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:44:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:44:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:44:24,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:44:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:44:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:44:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:44:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-11-22 18:44:24,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2023-11-22 18:44:24,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856361628] [2023-11-22 18:44:24,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856361628] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:24,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707253750] [2023-11-22 18:44:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:24,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:24,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:24,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:24,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-22 18:44:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:25,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 1975 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 18:44:25,293 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2023-11-22 18:44:25,469 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:44:25,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707253750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:44:25,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:44:25,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 17 [2023-11-22 18:44:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264081291] [2023-11-22 18:44:25,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:44:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:44:25,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-11-22 18:44:25,472 INFO L87 Difference]: Start difference. First operand 308 states and 436 transitions. Second operand has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-22 18:44:26,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:26,014 INFO L93 Difference]: Finished difference Result 808 states and 1141 transitions. [2023-11-22 18:44:26,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:44:26,015 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) Word has length 227 [2023-11-22 18:44:26,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:26,017 INFO L225 Difference]: With dead ends: 808 [2023-11-22 18:44:26,017 INFO L226 Difference]: Without dead ends: 516 [2023-11-22 18:44:26,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-11-22 18:44:26,018 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 293 mSDsluCounter, 239 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:26,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 425 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:44:26,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2023-11-22 18:44:26,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 503. [2023-11-22 18:44:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 320 states have (on average 1.18125) internal successors, (378), 322 states have internal predecessors, (378), 142 states have call successors, (142), 31 states have call predecessors, (142), 40 states have return successors, (174), 149 states have call predecessors, (174), 142 states have call successors, (174) [2023-11-22 18:44:26,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 694 transitions. [2023-11-22 18:44:26,055 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 694 transitions. Word has length 227 [2023-11-22 18:44:26,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:26,055 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 694 transitions. [2023-11-22 18:44:26,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 4 states have call successors, (32), 3 states have call predecessors, (32), 3 states have return successors, (32), 4 states have call predecessors, (32), 4 states have call successors, (32) [2023-11-22 18:44:26,056 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 694 transitions. [2023-11-22 18:44:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-22 18:44:26,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:26,058 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:44:26,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:26,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:26,274 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:26,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1588884217, now seen corresponding path program 1 times [2023-11-22 18:44:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:26,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759304820] [2023-11-22 18:44:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:26,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:26,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:26,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:44:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:44:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:44:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:44:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:44:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:44:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:44:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:44:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:44:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:44:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:44:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:44:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:44:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:44:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:44:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:44:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:44:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:44:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:44:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:44:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:44:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:44:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:44:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:44:27,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:44:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:44:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:44:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-11-22 18:44:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:27,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2023-11-22 18:44:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:27,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759304820] [2023-11-22 18:44:27,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759304820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:27,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111943987] [2023-11-22 18:44:27,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:27,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:27,528 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:27,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-22 18:44:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 1972 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 18:44:28,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 400 proven. 4 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2023-11-22 18:44:28,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:44:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1315 trivial. 0 not checked. [2023-11-22 18:44:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111943987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:44:28,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:44:28,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 5] total 16 [2023-11-22 18:44:28,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95369513] [2023-11-22 18:44:28,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:44:28,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 18:44:28,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 18:44:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-22 18:44:28,498 INFO L87 Difference]: Start difference. First operand 503 states and 694 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 12 states have internal predecessors, (96), 9 states have call successors, (63), 8 states have call predecessors, (63), 7 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2023-11-22 18:44:30,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:32,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:34,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:36,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:38,556 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:44:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:41,770 INFO L93 Difference]: Finished difference Result 1010 states and 1422 transitions. [2023-11-22 18:44:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 18:44:41,770 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 12 states have internal predecessors, (96), 9 states have call successors, (63), 8 states have call predecessors, (63), 7 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 227 [2023-11-22 18:44:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:41,773 INFO L225 Difference]: With dead ends: 1010 [2023-11-22 18:44:41,773 INFO L226 Difference]: Without dead ends: 546 [2023-11-22 18:44:41,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=203, Invalid=553, Unknown=0, NotChecked=0, Total=756 [2023-11-22 18:44:41,775 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 322 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 269 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:41,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 529 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 632 Invalid, 4 Unknown, 0 Unchecked, 11.0s Time] [2023-11-22 18:44:41,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2023-11-22 18:44:41,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 525. [2023-11-22 18:44:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 343 states have (on average 1.2215743440233235) internal successors, (419), 343 states have internal predecessors, (419), 126 states have call successors, (126), 44 states have call predecessors, (126), 55 states have return successors, (180), 137 states have call predecessors, (180), 126 states have call successors, (180) [2023-11-22 18:44:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 725 transitions. [2023-11-22 18:44:41,819 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 725 transitions. Word has length 227 [2023-11-22 18:44:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:41,820 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 725 transitions. [2023-11-22 18:44:41,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 12 states have internal predecessors, (96), 9 states have call successors, (63), 8 states have call predecessors, (63), 7 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2023-11-22 18:44:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 725 transitions. [2023-11-22 18:44:41,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2023-11-22 18:44:41,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:41,823 INFO L195 NwaCegarLoop]: trace histogram [25, 25, 25, 9, 5, 5, 5, 5, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:44:41,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:42,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-22 18:44:42,038 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:42,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1204573957, now seen corresponding path program 1 times [2023-11-22 18:44:42,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604346206] [2023-11-22 18:44:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:42,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:42,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:43,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:44:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:43,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:43,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:43,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:44:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:43,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:44:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:44:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:44,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:44:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:44:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:44:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:44:44,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:44:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-22 18:44:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-11-22 18:44:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-11-22 18:44:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-11-22 18:44:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-22 18:44:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2023-11-22 18:44:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2023-11-22 18:44:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-22 18:44:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2023-11-22 18:44:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2023-11-22 18:44:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2023-11-22 18:44:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2023-11-22 18:44:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2023-11-22 18:44:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2023-11-22 18:44:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2023-11-22 18:44:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2023-11-22 18:44:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2023-11-22 18:44:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2023-11-22 18:44:44,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2023-11-22 18:44:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:44,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1316 trivial. 0 not checked. [2023-11-22 18:44:44,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:44,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604346206] [2023-11-22 18:44:44,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604346206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:44,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447766002] [2023-11-22 18:44:44,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:44,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:44,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:44,520 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:44,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-22 18:44:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:45,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-22 18:44:45,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:45,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-22 18:44:49,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-22 18:44:49,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-22 18:44:49,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 48 [2023-11-22 18:44:51,961 INFO L349 Elim1Store]: treesize reduction 64, result has 54.9 percent of original size [2023-11-22 18:44:51,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 104 [2023-11-22 18:45:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 464 proven. 4 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2023-11-22 18:45:08,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:45:08,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2023-11-22 18:45:08,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-22 18:45:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447766002] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:45:11,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:45:11,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 32 [2023-11-22 18:45:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065260164] [2023-11-22 18:45:11,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 18:45:11,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-22 18:45:11,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:45:11,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-22 18:45:11,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1200, Unknown=3, NotChecked=0, Total=1332 [2023-11-22 18:45:11,591 INFO L87 Difference]: Start difference. First operand 525 states and 725 transitions. Second operand has 32 states, 30 states have (on average 3.933333333333333) internal successors, (118), 28 states have internal predecessors, (118), 16 states have call successors, (62), 11 states have call predecessors, (62), 12 states have return successors, (62), 14 states have call predecessors, (62), 16 states have call successors, (62) [2023-11-22 18:45:13,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:15,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:18,413 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:20,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:22,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:24,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:26,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:29,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:31,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:33,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:36,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:38,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:40,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-22 18:45:43,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:45:45,314 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-22 18:46:11,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:46:11,905 INFO L93 Difference]: Finished difference Result 1071 states and 1542 transitions. [2023-11-22 18:46:11,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-22 18:46:11,905 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.933333333333333) internal successors, (118), 28 states have internal predecessors, (118), 16 states have call successors, (62), 11 states have call predecessors, (62), 12 states have return successors, (62), 14 states have call predecessors, (62), 16 states have call successors, (62) Word has length 227 [2023-11-22 18:46:11,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:46:11,908 INFO L225 Difference]: With dead ends: 1071 [2023-11-22 18:46:11,908 INFO L226 Difference]: Without dead ends: 617 [2023-11-22 18:46:11,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 428 SyntacticMatches, 5 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=797, Invalid=4312, Unknown=3, NotChecked=0, Total=5112 [2023-11-22 18:46:11,911 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 671 mSDsluCounter, 1289 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 611 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:46:11,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 1407 Invalid, 3838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [611 Valid, 3212 Invalid, 15 Unknown, 0 Unchecked, 45.4s Time] [2023-11-22 18:46:11,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2023-11-22 18:46:11,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 571. [2023-11-22 18:46:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 368 states have (on average 1.2146739130434783) internal successors, (447), 367 states have internal predecessors, (447), 142 states have call successors, (142), 44 states have call predecessors, (142), 60 states have return successors, (232), 159 states have call predecessors, (232), 142 states have call successors, (232) [2023-11-22 18:46:11,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 821 transitions. [2023-11-22 18:46:11,968 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 821 transitions. Word has length 227 [2023-11-22 18:46:11,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:46:11,969 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 821 transitions. [2023-11-22 18:46:11,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.933333333333333) internal successors, (118), 28 states have internal predecessors, (118), 16 states have call successors, (62), 11 states have call predecessors, (62), 12 states have return successors, (62), 14 states have call predecessors, (62), 16 states have call successors, (62) [2023-11-22 18:46:11,969 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 821 transitions. [2023-11-22 18:46:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-22 18:46:11,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:46:11,973 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:46:11,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-22 18:46:12,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:46:12,184 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:46:12,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:46:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash -410780517, now seen corresponding path program 1 times [2023-11-22 18:46:12,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:46:12,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898224938] [2023-11-22 18:46:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:46:12,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:46:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:12,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:46:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:46:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:46:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:46:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:46:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:46:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:46:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:46:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:46:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:46:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:46:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 18:46:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 18:46:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-22 18:46:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 18:46:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-22 18:46:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 18:46:13,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-22 18:46:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 18:46:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-22 18:46:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 18:46:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-22 18:46:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:46:13,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:46:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-22 18:46:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-11-22 18:46:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-11-22 18:46:13,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-22 18:46:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-22 18:46:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1442 trivial. 0 not checked. [2023-11-22 18:46:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:46:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898224938] [2023-11-22 18:46:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898224938] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:46:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291436693] [2023-11-22 18:46:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:46:13,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:46:13,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:46:13,641 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:46:13,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-22 18:46:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:14,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 2289 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-22 18:46:14,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:46:14,397 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 387 proven. 0 refuted. 0 times theorem prover too weak. 1057 trivial. 0 not checked. [2023-11-22 18:46:14,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:46:14,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [291436693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:46:14,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:46:14,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-11-22 18:46:14,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432489744] [2023-11-22 18:46:14,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:46:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:46:14,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:46:14,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:46:14,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:46:14,399 INFO L87 Difference]: Start difference. First operand 571 states and 821 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-22 18:46:14,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:46:14,523 INFO L93 Difference]: Finished difference Result 1050 states and 1601 transitions. [2023-11-22 18:46:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:46:14,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 246 [2023-11-22 18:46:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:46:14,526 INFO L225 Difference]: With dead ends: 1050 [2023-11-22 18:46:14,527 INFO L226 Difference]: Without dead ends: 577 [2023-11-22 18:46:14,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:46:14,529 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 0 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:46:14,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:46:14,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-22 18:46:14,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 575. [2023-11-22 18:46:14,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 372 states have (on average 1.2123655913978495) internal successors, (451), 371 states have internal predecessors, (451), 142 states have call successors, (142), 44 states have call predecessors, (142), 60 states have return successors, (232), 159 states have call predecessors, (232), 142 states have call successors, (232) [2023-11-22 18:46:14,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 825 transitions. [2023-11-22 18:46:14,616 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 825 transitions. Word has length 246 [2023-11-22 18:46:14,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:46:14,616 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 825 transitions. [2023-11-22 18:46:14,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2023-11-22 18:46:14,617 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 825 transitions. [2023-11-22 18:46:14,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-22 18:46:14,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:46:14,620 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:46:14,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-22 18:46:14,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:46:14,837 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:46:14,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:46:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 87776285, now seen corresponding path program 1 times [2023-11-22 18:46:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:46:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43789098] [2023-11-22 18:46:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:46:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:46:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:16,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:46:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:16,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:16,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:46:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:16,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:16,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:46:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:46:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:46:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:46:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:17,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:46:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:46:17,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:46:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:46:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:46:18,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 18:46:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 18:46:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-22 18:46:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 18:46:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-22 18:46:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 18:46:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-22 18:46:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 18:46:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-22 18:46:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 18:46:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-22 18:46:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:46:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:46:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-22 18:46:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-11-22 18:46:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-11-22 18:46:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-22 18:46:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-22 18:46:18,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 1425 trivial. 0 not checked. [2023-11-22 18:46:18,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:46:18,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43789098] [2023-11-22 18:46:18,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43789098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:46:18,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:46:18,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 18:46:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708255520] [2023-11-22 18:46:18,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:46:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:46:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:46:18,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:46:18,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:46:18,193 INFO L87 Difference]: Start difference. First operand 575 states and 825 transitions. Second operand has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-22 18:46:20,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:22,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:46:31,501 INFO L93 Difference]: Finished difference Result 1400 states and 2006 transitions. [2023-11-22 18:46:31,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-22 18:46:31,501 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 246 [2023-11-22 18:46:31,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:46:31,506 INFO L225 Difference]: With dead ends: 1400 [2023-11-22 18:46:31,506 INFO L226 Difference]: Without dead ends: 889 [2023-11-22 18:46:31,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2023-11-22 18:46:31,508 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 489 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 901 mSolverCounterSat, 391 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 1294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 901 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:46:31,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 474 Invalid, 1294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 901 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2023-11-22 18:46:31,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-22 18:46:31,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 629. [2023-11-22 18:46:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 403 states have (on average 1.1935483870967742) internal successors, (481), 402 states have internal predecessors, (481), 163 states have call successors, (163), 47 states have call predecessors, (163), 62 states have return successors, (254), 179 states have call predecessors, (254), 163 states have call successors, (254) [2023-11-22 18:46:31,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 898 transitions. [2023-11-22 18:46:31,595 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 898 transitions. Word has length 246 [2023-11-22 18:46:31,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:46:31,595 INFO L495 AbstractCegarLoop]: Abstraction has 629 states and 898 transitions. [2023-11-22 18:46:31,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.545454545454546) internal successors, (72), 8 states have internal predecessors, (72), 5 states have call successors, (33), 5 states have call predecessors, (33), 3 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2023-11-22 18:46:31,596 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 898 transitions. [2023-11-22 18:46:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2023-11-22 18:46:31,599 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:46:31,599 INFO L195 NwaCegarLoop]: trace histogram [29, 29, 29, 9, 9, 9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:46:31,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 18:46:31,599 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:46:31,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:46:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1091882397, now seen corresponding path program 1 times [2023-11-22 18:46:31,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:46:31,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767277304] [2023-11-22 18:46:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:46:31,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:46:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:33,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:46:33,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:46:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:46:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:46:34,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-11-22 18:46:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-22 18:46:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:46:34,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:46:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:46:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:46:34,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:46:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:46:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-22 18:46:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:46:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:46:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2023-11-22 18:46:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2023-11-22 18:46:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2023-11-22 18:46:34,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2023-11-22 18:46:34,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2023-11-22 18:46:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2023-11-22 18:46:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:46:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2023-11-22 18:46:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2023-11-22 18:46:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2023-11-22 18:46:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 18:46:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2023-11-22 18:46:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2023-11-22 18:46:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-22 18:46:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-22 18:46:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2023-11-22 18:46:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-22 18:46:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2023-11-22 18:46:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 18:46:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 1854 trivial. 0 not checked. [2023-11-22 18:46:34,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:46:34,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767277304] [2023-11-22 18:46:34,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767277304] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:46:34,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053969864] [2023-11-22 18:46:34,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:46:34,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:46:34,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:46:34,857 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:46:34,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-22 18:46:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:46:35,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 2755 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-22 18:46:35,752 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:46:36,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-22 18:46:36,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 18:46:36,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-22 18:46:37,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-22 18:46:37,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-22 18:46:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1880 backedges. 508 proven. 29 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2023-11-22 18:46:37,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:46:39,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053969864] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:46:39,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:46:39,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2023-11-22 18:46:39,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424439195] [2023-11-22 18:46:39,731 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-22 18:46:39,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-22 18:46:39,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:46:39,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-22 18:46:39,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2023-11-22 18:46:39,733 INFO L87 Difference]: Start difference. First operand 629 states and 898 transitions. Second operand has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 13 states have call successors, (75), 10 states have call predecessors, (75), 8 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) [2023-11-22 18:46:42,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:44,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:47,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:49,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:51,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:53,045 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:55,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:57,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:46:59,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:01,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:12,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:47:12,096 INFO L93 Difference]: Finished difference Result 920 states and 1304 transitions. [2023-11-22 18:47:12,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-22 18:47:12,097 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 13 states have call successors, (75), 10 states have call predecessors, (75), 8 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) Word has length 289 [2023-11-22 18:47:12,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:47:12,100 INFO L225 Difference]: With dead ends: 920 [2023-11-22 18:47:12,100 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 18:47:12,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 591 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=445, Invalid=1625, Unknown=0, NotChecked=0, Total=2070 [2023-11-22 18:47:12,102 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 517 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 381 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:47:12,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [559 Valid, 930 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [381 Valid, 1386 Invalid, 10 Unknown, 0 Unchecked, 26.6s Time] [2023-11-22 18:47:12,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 18:47:12,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 611. [2023-11-22 18:47:12,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 391 states have (on average 1.1918158567774937) internal successors, (466), 389 states have internal predecessors, (466), 160 states have call successors, (160), 45 states have call predecessors, (160), 59 states have return successors, (247), 176 states have call predecessors, (247), 160 states have call successors, (247) [2023-11-22 18:47:12,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 873 transitions. [2023-11-22 18:47:12,167 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 873 transitions. Word has length 289 [2023-11-22 18:47:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:47:12,167 INFO L495 AbstractCegarLoop]: Abstraction has 611 states and 873 transitions. [2023-11-22 18:47:12,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.434782608695652) internal successors, (148), 20 states have internal predecessors, (148), 13 states have call successors, (75), 10 states have call predecessors, (75), 8 states have return successors, (75), 13 states have call predecessors, (75), 13 states have call successors, (75) [2023-11-22 18:47:12,168 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 873 transitions. [2023-11-22 18:47:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2023-11-22 18:47:12,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:47:12,171 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 9, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:47:12,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 18:47:12,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-22 18:47:12,388 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:47:12,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:47:12,389 INFO L85 PathProgramCache]: Analyzing trace with hash -341882021, now seen corresponding path program 1 times [2023-11-22 18:47:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:47:12,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685849842] [2023-11-22 18:47:12,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:12,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:47:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-22 18:47:14,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:14,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:14,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:47:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 18:47:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-22 18:47:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:47:15,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 18:47:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-22 18:47:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-22 18:47:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:15,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2023-11-22 18:47:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:47:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:47:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:47:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-22 18:47:16,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2023-11-22 18:47:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2023-11-22 18:47:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-22 18:47:16,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2023-11-22 18:47:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2023-11-22 18:47:16,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-22 18:47:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2023-11-22 18:47:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2023-11-22 18:47:16,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2023-11-22 18:47:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2023-11-22 18:47:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:47:16,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2023-11-22 18:47:16,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2023-11-22 18:47:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2023-11-22 18:47:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2023-11-22 18:47:16,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2023-11-22 18:47:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2023-11-22 18:47:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:16,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1437 trivial. 0 not checked. [2023-11-22 18:47:16,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:47:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685849842] [2023-11-22 18:47:16,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685849842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:47:16,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244954228] [2023-11-22 18:47:16,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:47:16,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:47:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:47:16,058 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:47:16,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-22 18:47:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:47:23,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 2281 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-22 18:47:23,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:47:25,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-22 18:47:27,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-11-22 18:47:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 532 proven. 45 refuted. 0 times theorem prover too weak. 867 trivial. 0 not checked. [2023-11-22 18:47:27,812 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:47:29,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-22 18:47:29,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-11-22 18:47:32,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-22 18:47:32,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-11-22 18:47:33,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2023-11-22 18:47:33,060 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2023-11-22 18:47:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 24 proven. 21 refuted. 0 times theorem prover too weak. 1399 trivial. 0 not checked. [2023-11-22 18:47:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244954228] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:47:34,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:47:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 21] total 54 [2023-11-22 18:47:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086637980] [2023-11-22 18:47:34,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:47:34,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-22 18:47:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:47:34,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-22 18:47:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=2523, Unknown=0, NotChecked=0, Total=2862 [2023-11-22 18:47:34,580 INFO L87 Difference]: Start difference. First operand 611 states and 873 transitions. Second operand has 54 states, 47 states have (on average 3.5319148936170213) internal successors, (166), 48 states have internal predecessors, (166), 29 states have call successors, (78), 17 states have call predecessors, (78), 20 states have return successors, (77), 27 states have call predecessors, (77), 29 states have call successors, (77) [2023-11-22 18:47:37,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:39,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:41,055 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:43,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:45,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:47,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:49,117 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:51,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:53,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:55,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:57,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-22 18:47:59,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15