./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 18:41:02,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 18:41:02,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 18:41:02,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 18:41:02,550 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 18:41:02,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 18:41:02,579 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 18:41:02,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 18:41:02,581 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 18:41:02,585 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 18:41:02,585 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 18:41:02,585 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 18:41:02,586 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 18:41:02,587 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 18:41:02,587 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 18:41:02,588 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 18:41:02,588 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 18:41:02,588 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 18:41:02,589 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 18:41:02,589 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 18:41:02,589 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 18:41:02,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 18:41:02,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 18:41:02,590 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 18:41:02,591 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 18:41:02,591 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 18:41:02,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 18:41:02,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 18:41:02,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:41:02,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 18:41:02,593 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 18:41:02,594 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 18:41:02,594 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 18:41:02,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 18:41:02,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 18:41:02,595 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 18:41:02,595 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 18:41:02,595 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 18:41:02,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 18:41:02,596 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cb4cf2f7b619bb65636b8158cc0f6ae5cf90699f1f1c19bf802021a20c422d2c [2023-11-22 18:41:02,854 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 18:41:02,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 18:41:02,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 18:41:02,881 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 18:41:02,881 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 18:41:02,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:41:04,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 18:41:04,467 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 18:41:04,468 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:41:04,499 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afc83be/e81df07c9f8046e5a063ba0ff0d8a2bc/FLAG269453874 [2023-11-22 18:41:04,514 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79afc83be/e81df07c9f8046e5a063ba0ff0d8a2bc [2023-11-22 18:41:04,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 18:41:04,518 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 18:41:04,521 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 18:41:04,521 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 18:41:04,525 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 18:41:04,526 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:04" (1/1) ... [2023-11-22 18:41:04,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184f0d01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:04, skipping insertion in model container [2023-11-22 18:41:04,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:41:04" (1/1) ... [2023-11-22 18:41:04,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 18:41:05,157 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2023-11-22 18:41:05,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:41:05,343 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 18:41:05,477 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1-todo/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i[153287,153300] [2023-11-22 18:41:05,536 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 18:41:05,568 INFO L206 MainTranslator]: Completed translation [2023-11-22 18:41:05,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05 WrapperNode [2023-11-22 18:41:05,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 18:41:05,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 18:41:05,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 18:41:05,570 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 18:41:05,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,623 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,670 INFO L138 Inliner]: procedures = 82, calls = 143, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 483 [2023-11-22 18:41:05,673 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 18:41:05,674 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 18:41:05,674 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 18:41:05,674 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 18:41:05,684 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,705 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,763 INFO L189 HeapSplitter]: Split 55 memory accesses to 10 slices as follows [2, 2, 2, 33, 2, 8, 5, 0, 1, 0] [2023-11-22 18:41:05,763 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,768 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,793 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,799 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,806 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,810 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,821 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 18:41:05,822 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 18:41:05,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 18:41:05,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 18:41:05,823 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (1/1) ... [2023-11-22 18:41:05,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 18:41:05,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:05,887 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 18:41:05,911 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 18:41:05,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2023-11-22 18:41:05,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2023-11-22 18:41:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2023-11-22 18:41:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2023-11-22 18:41:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2023-11-22 18:41:05,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#9 [2023-11-22 18:41:05,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 18:41:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-22 18:41:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-22 18:41:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-22 18:41:05,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2023-11-22 18:41:05,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#9 [2023-11-22 18:41:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2023-11-22 18:41:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2023-11-22 18:41:05,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2023-11-22 18:41:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2023-11-22 18:41:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2023-11-22 18:41:05,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2023-11-22 18:41:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2023-11-22 18:41:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2023-11-22 18:41:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#8 [2023-11-22 18:41:05,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#9 [2023-11-22 18:41:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2023-11-22 18:41:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2023-11-22 18:41:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2023-11-22 18:41:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2023-11-22 18:41:05,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2023-11-22 18:41:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2023-11-22 18:41:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2023-11-22 18:41:05,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2023-11-22 18:41:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2023-11-22 18:41:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#9 [2023-11-22 18:41:05,948 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-11-22 18:41:05,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-11-22 18:41:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 18:41:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 18:41:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 18:41:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 18:41:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-22 18:41:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-22 18:41:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2023-11-22 18:41:05,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2023-11-22 18:41:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#9 [2023-11-22 18:41:05,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2023-11-22 18:41:05,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2023-11-22 18:41:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:41:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:41:05,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:41:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:41:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:41:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:41:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:41:05,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:41:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#8 [2023-11-22 18:41:05,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#9 [2023-11-22 18:41:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2023-11-22 18:41:05,959 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2023-11-22 18:41:05,960 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#8 [2023-11-22 18:41:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#9 [2023-11-22 18:41:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-22 18:41:05,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-22 18:41:05,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 18:41:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-22 18:41:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-22 18:41:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-22 18:41:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-22 18:41:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-22 18:41:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-22 18:41:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-22 18:41:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2023-11-22 18:41:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2023-11-22 18:41:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#9 [2023-11-22 18:41:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2023-11-22 18:41:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2023-11-22 18:41:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 18:41:05,965 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 18:41:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 18:41:05,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 18:41:05,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 18:41:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 18:41:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 18:41:05,967 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2023-11-22 18:41:05,967 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2023-11-22 18:41:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 18:41:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 18:41:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 18:41:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 18:41:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 18:41:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 18:41:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 18:41:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-22 18:41:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 18:41:05,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2023-11-22 18:41:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2023-11-22 18:41:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2023-11-22 18:41:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2023-11-22 18:41:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#8 [2023-11-22 18:41:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#9 [2023-11-22 18:41:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-11-22 18:41:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-11-22 18:41:05,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 18:41:05,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 18:41:06,310 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 18:41:06,313 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 18:41:06,349 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-11-22 18:41:07,046 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 18:41:07,123 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 18:41:07,125 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-22 18:41:07,126 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:07 BoogieIcfgContainer [2023-11-22 18:41:07,127 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 18:41:07,129 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 18:41:07,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 18:41:07,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 18:41:07,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:41:04" (1/3) ... [2023-11-22 18:41:07,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8f7c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:07, skipping insertion in model container [2023-11-22 18:41:07,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:41:05" (2/3) ... [2023-11-22 18:41:07,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8f7c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:41:07, skipping insertion in model container [2023-11-22 18:41:07,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:41:07" (3/3) ... [2023-11-22 18:41:07,143 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2023-11-22 18:41:07,159 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 18:41:07,159 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 18:41:07,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 18:41:07,221 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;@58398be9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 18:41:07,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 18:41:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 146 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 114 states have internal predecessors, (166), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-22 18:41:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-22 18:41:07,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:07,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 18:41:07,237 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:07,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:07,243 INFO L85 PathProgramCache]: Analyzing trace with hash 275293622, now seen corresponding path program 1 times [2023-11-22 18:41:07,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:07,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969058966] [2023-11-22 18:41:07,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:07,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:07,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:07,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:41:07,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:07,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969058966] [2023-11-22 18:41:07,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969058966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:07,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:41:07,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701669851] [2023-11-22 18:41:07,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:07,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:41:07,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:41:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:41:07,877 INFO L87 Difference]: Start difference. First operand has 146 states, 109 states have (on average 1.5229357798165137) internal successors, (166), 114 states have internal predecessors, (166), 25 states have call successors, (25), 11 states have call predecessors, (25), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:41:08,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:08,521 INFO L93 Difference]: Finished difference Result 453 states and 695 transitions. [2023-11-22 18:41:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:41:08,523 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-22 18:41:08,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:08,534 INFO L225 Difference]: With dead ends: 453 [2023-11-22 18:41:08,534 INFO L226 Difference]: Without dead ends: 299 [2023-11-22 18:41:08,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:41:08,541 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 263 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:08,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 375 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:41:08,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2023-11-22 18:41:08,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 257. [2023-11-22 18:41:08,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 199 states have (on average 1.4120603015075377) internal successors, (281), 199 states have internal predecessors, (281), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 358 transitions. [2023-11-22 18:41:08,603 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 358 transitions. Word has length 18 [2023-11-22 18:41:08,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:08,603 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 358 transitions. [2023-11-22 18:41:08,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-22 18:41:08,604 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 358 transitions. [2023-11-22 18:41:08,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-22 18:41:08,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:08,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 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 18:41:08,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 18:41:08,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:08,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:08,607 INFO L85 PathProgramCache]: Analyzing trace with hash -354957720, now seen corresponding path program 1 times [2023-11-22 18:41:08,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:08,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359289288] [2023-11-22 18:41:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:08,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:08,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:08,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:08,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:41:08,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:08,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359289288] [2023-11-22 18:41:08,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359289288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:08,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:08,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:41:08,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684754566] [2023-11-22 18:41:08,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:08,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:41:08,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:08,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:41:08,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:41:08,800 INFO L87 Difference]: Start difference. First operand 257 states and 358 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:09,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:09,115 INFO L93 Difference]: Finished difference Result 555 states and 780 transitions. [2023-11-22 18:41:09,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:41:09,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-11-22 18:41:09,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:09,123 INFO L225 Difference]: With dead ends: 555 [2023-11-22 18:41:09,123 INFO L226 Difference]: Without dead ends: 302 [2023-11-22 18:41:09,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:41:09,130 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 43 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:09,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 363 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:41:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2023-11-22 18:41:09,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 258. [2023-11-22 18:41:09,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 200 states have (on average 1.41) internal successors, (282), 200 states have internal predecessors, (282), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 359 transitions. [2023-11-22 18:41:09,157 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 359 transitions. Word has length 28 [2023-11-22 18:41:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:09,158 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 359 transitions. [2023-11-22 18:41:09,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:09,158 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 359 transitions. [2023-11-22 18:41:09,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-22 18:41:09,159 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:09,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 18:41:09,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 18:41:09,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:09,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:09,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1279910342, now seen corresponding path program 1 times [2023-11-22 18:41:09,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:09,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117489983] [2023-11-22 18:41:09,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:09,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:41:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117489983] [2023-11-22 18:41:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117489983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408969963] [2023-11-22 18:41:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:09,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:09,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:09,304 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 18:41:09,321 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 18:41:09,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:09,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-22 18:41:09,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:09,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:41:09,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:41:09,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 18:41:09,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408969963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:41:09,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:41:09,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-22 18:41:09,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720353188] [2023-11-22 18:41:09,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:41:09,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:41:09,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:09,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:41:09,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:41:09,610 INFO L87 Difference]: Start difference. First operand 258 states and 359 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:10,102 INFO L93 Difference]: Finished difference Result 563 states and 792 transitions. [2023-11-22 18:41:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 18:41:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2023-11-22 18:41:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:10,105 INFO L225 Difference]: With dead ends: 563 [2023-11-22 18:41:10,105 INFO L226 Difference]: Without dead ends: 309 [2023-11-22 18:41:10,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:41:10,106 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 49 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:10,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 618 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:41:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-22 18:41:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2023-11-22 18:41:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 209 states have (on average 1.4066985645933014) internal successors, (294), 209 states have internal predecessors, (294), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:10,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 371 transitions. [2023-11-22 18:41:10,126 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 371 transitions. Word has length 31 [2023-11-22 18:41:10,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:10,127 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 371 transitions. [2023-11-22 18:41:10,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:10,127 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 371 transitions. [2023-11-22 18:41:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-22 18:41:10,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:10,129 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 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 18:41:10,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 18:41:10,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:10,351 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:10,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:10,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1937247464, now seen corresponding path program 2 times [2023-11-22 18:41:10,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:10,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776369694] [2023-11-22 18:41:10,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:10,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:10,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-22 18:41:10,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:10,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776369694] [2023-11-22 18:41:10,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776369694] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:10,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:10,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 18:41:10,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468668489] [2023-11-22 18:41:10,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:10,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:41:10,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:10,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:41:10,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 18:41:10,475 INFO L87 Difference]: Start difference. First operand 267 states and 371 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:10,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:10,756 INFO L93 Difference]: Finished difference Result 571 states and 799 transitions. [2023-11-22 18:41:10,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:41:10,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-11-22 18:41:10,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:10,759 INFO L225 Difference]: With dead ends: 571 [2023-11-22 18:41:10,759 INFO L226 Difference]: Without dead ends: 308 [2023-11-22 18:41:10,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:41:10,761 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 243 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:10,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 231 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 18:41:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-22 18:41:10,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 266. [2023-11-22 18:41:10,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 208 states have (on average 1.3942307692307692) internal successors, (290), 208 states have internal predecessors, (290), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:10,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 367 transitions. [2023-11-22 18:41:10,779 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 367 transitions. Word has length 40 [2023-11-22 18:41:10,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:10,780 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 367 transitions. [2023-11-22 18:41:10,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-22 18:41:10,780 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 367 transitions. [2023-11-22 18:41:10,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-22 18:41:10,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:10,783 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2023-11-22 18:41:10,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 18:41:10,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:10,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:10,784 INFO L85 PathProgramCache]: Analyzing trace with hash -365978726, now seen corresponding path program 1 times [2023-11-22 18:41:10,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:10,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318101024] [2023-11-22 18:41:10,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:10,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:10,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-22 18:41:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 18:41:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:41:11,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318101024] [2023-11-22 18:41:11,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318101024] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:11,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708225269] [2023-11-22 18:41:11,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:11,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:11,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:11,019 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 18:41:11,025 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 18:41:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:11,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 18:41:11,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 13 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 18:41:11,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:41:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:41:11,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708225269] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:41:11,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:41:11,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-22 18:41:11,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082604352] [2023-11-22 18:41:11,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:41:11,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-22 18:41:11,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:11,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-22 18:41:11,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:41:11,394 INFO L87 Difference]: Start difference. First operand 266 states and 367 transitions. Second operand has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:41:11,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:11,749 INFO L93 Difference]: Finished difference Result 473 states and 663 transitions. [2023-11-22 18:41:11,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:41:11,749 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-11-22 18:41:11,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:11,751 INFO L225 Difference]: With dead ends: 473 [2023-11-22 18:41:11,751 INFO L226 Difference]: Without dead ends: 326 [2023-11-22 18:41:11,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:41:11,752 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 70 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:11,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 489 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:41:11,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-22 18:41:11,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 284. [2023-11-22 18:41:11,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 226 states have (on average 1.3893805309734513) internal successors, (314), 226 states have internal predecessors, (314), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 391 transitions. [2023-11-22 18:41:11,769 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 391 transitions. Word has length 58 [2023-11-22 18:41:11,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:11,769 INFO L495 AbstractCegarLoop]: Abstraction has 284 states and 391 transitions. [2023-11-22 18:41:11,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:41:11,770 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 391 transitions. [2023-11-22 18:41:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 18:41:11,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:11,772 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 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] [2023-11-22 18:41:11,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-22 18:41:11,987 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 18:41:11,987 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:11,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:11,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1128287578, now seen corresponding path program 2 times [2023-11-22 18:41:11,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:11,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540662822] [2023-11-22 18:41:11,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:11,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:12,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-22 18:41:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-22 18:41:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:12,439 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:41:12,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540662822] [2023-11-22 18:41:12,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540662822] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:12,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575154836] [2023-11-22 18:41:12,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:41:12,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:12,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:12,442 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 18:41:12,460 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 18:41:12,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 18:41:12,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:41:12,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 18:41:12,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:12,782 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 13 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-22 18:41:12,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:41:13,023 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 5 proven. 145 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:41:13,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575154836] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:41:13,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:41:13,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 26 [2023-11-22 18:41:13,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730767699] [2023-11-22 18:41:13,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:41:13,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-22 18:41:13,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:13,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-22 18:41:13,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:41:13,026 INFO L87 Difference]: Start difference. First operand 284 states and 391 transitions. Second operand has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:41:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:13,530 INFO L93 Difference]: Finished difference Result 527 states and 741 transitions. [2023-11-22 18:41:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-22 18:41:13,531 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-22 18:41:13,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:13,532 INFO L225 Difference]: With dead ends: 527 [2023-11-22 18:41:13,532 INFO L226 Difference]: Without dead ends: 362 [2023-11-22 18:41:13,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2023-11-22 18:41:13,533 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 107 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:13,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 749 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:41:13,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-11-22 18:41:13,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-11-22 18:41:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 262 states have (on average 1.381679389312977) internal successors, (362), 262 states have internal predecessors, (362), 39 states have call successors, (39), 19 states have call predecessors, (39), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2023-11-22 18:41:13,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 439 transitions. [2023-11-22 18:41:13,554 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 439 transitions. Word has length 76 [2023-11-22 18:41:13,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:13,554 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 439 transitions. [2023-11-22 18:41:13,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.8846153846153846) internal successors, (101), 25 states have internal predecessors, (101), 2 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 18:41:13,554 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 439 transitions. [2023-11-22 18:41:13,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-22 18:41:13,556 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:13,557 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 3, 3, 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] [2023-11-22 18:41:13,574 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 18:41:13,772 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 18:41:13,772 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:13,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:13,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1574625498, now seen corresponding path program 3 times [2023-11-22 18:41:13,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:13,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482809888] [2023-11-22 18:41:13,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:13,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:13,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:14,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:41:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:41:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:14,809 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 5 proven. 715 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-22 18:41:14,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:14,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482809888] [2023-11-22 18:41:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482809888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366540943] [2023-11-22 18:41:14,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 18:41:14,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:14,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:14,811 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 18:41:14,835 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 18:41:15,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-22 18:41:15,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:41:15,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-22 18:41:15,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:15,246 INFO L134 CoverageAnalysis]: Checked inductivity of 732 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2023-11-22 18:41:15,247 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:41:15,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366540943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:15,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:41:15,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [26] total 28 [2023-11-22 18:41:15,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783989943] [2023-11-22 18:41:15,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:15,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:41:15,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:15,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:41:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2023-11-22 18:41:15,250 INFO L87 Difference]: Start difference. First operand 320 states and 439 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:41:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:15,369 INFO L93 Difference]: Finished difference Result 949 states and 1309 transitions. [2023-11-22 18:41:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:41:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2023-11-22 18:41:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:15,376 INFO L225 Difference]: With dead ends: 949 [2023-11-22 18:41:15,376 INFO L226 Difference]: Without dead ends: 631 [2023-11-22 18:41:15,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=310, Invalid=502, Unknown=0, NotChecked=0, Total=812 [2023-11-22 18:41:15,379 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 154 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:15,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 515 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:41:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2023-11-22 18:41:15,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2023-11-22 18:41:15,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 512 states have (on average 1.37890625) internal successors, (706), 512 states have internal predecessors, (706), 76 states have call successors, (76), 37 states have call predecessors, (76), 36 states have return successors, (79), 75 states have call predecessors, (79), 75 states have call successors, (79) [2023-11-22 18:41:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 861 transitions. [2023-11-22 18:41:15,411 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 861 transitions. Word has length 112 [2023-11-22 18:41:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:15,412 INFO L495 AbstractCegarLoop]: Abstraction has 625 states and 861 transitions. [2023-11-22 18:41:15,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-22 18:41:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 861 transitions. [2023-11-22 18:41:15,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:41:15,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:15,419 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 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] [2023-11-22 18:41:15,437 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 18:41:15,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:15,632 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:15,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:15,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1416157804, now seen corresponding path program 1 times [2023-11-22 18:41:15,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:15,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865502826] [2023-11-22 18:41:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:15,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 18:41:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:15,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 18:41:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-22 18:41:15,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-22 18:41:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:15,943 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 744 trivial. 0 not checked. [2023-11-22 18:41:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865502826] [2023-11-22 18:41:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865502826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 18:41:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059126704] [2023-11-22 18:41:15,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:15,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:41:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:15,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:41:15,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 18:41:15,946 INFO L87 Difference]: Start difference. First operand 625 states and 861 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:41:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:16,638 INFO L93 Difference]: Finished difference Result 1262 states and 1732 transitions. [2023-11-22 18:41:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 18:41:16,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2023-11-22 18:41:16,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:16,642 INFO L225 Difference]: With dead ends: 1262 [2023-11-22 18:41:16,642 INFO L226 Difference]: Without dead ends: 641 [2023-11-22 18:41:16,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 18:41:16,644 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 95 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:16,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 430 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:41:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2023-11-22 18:41:16,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 460. [2023-11-22 18:41:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 391 states have (on average 1.3734015345268542) internal successors, (537), 393 states have internal predecessors, (537), 43 states have call successors, (43), 23 states have call predecessors, (43), 25 states have return successors, (49), 43 states have call predecessors, (49), 42 states have call successors, (49) [2023-11-22 18:41:16,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 629 transitions. [2023-11-22 18:41:16,679 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 629 transitions. Word has length 147 [2023-11-22 18:41:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:16,680 INFO L495 AbstractCegarLoop]: Abstraction has 460 states and 629 transitions. [2023-11-22 18:41:16,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 18:41:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 629 transitions. [2023-11-22 18:41:16,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-22 18:41:16,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:16,683 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 4, 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] [2023-11-22 18:41:16,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 18:41:16,684 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:16,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 870100556, now seen corresponding path program 2 times [2023-11-22 18:41:16,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966499543] [2023-11-22 18:41:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:17,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:41:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:41:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:41:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:41:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:17,334 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2023-11-22 18:41:17,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:17,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966499543] [2023-11-22 18:41:17,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966499543] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:17,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:17,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 18:41:17,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953355369] [2023-11-22 18:41:17,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:17,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 18:41:17,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:17,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 18:41:17,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 18:41:17,336 INFO L87 Difference]: Start difference. First operand 460 states and 629 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 18:41:18,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:18,076 INFO L93 Difference]: Finished difference Result 915 states and 1263 transitions. [2023-11-22 18:41:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:41:18,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) Word has length 147 [2023-11-22 18:41:18,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:18,079 INFO L225 Difference]: With dead ends: 915 [2023-11-22 18:41:18,080 INFO L226 Difference]: Without dead ends: 482 [2023-11-22 18:41:18,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:41:18,082 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 67 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:18,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 598 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:41:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-11-22 18:41:18,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 459. [2023-11-22 18:41:18,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 389 states have (on average 1.365038560411311) internal successors, (531), 391 states have internal predecessors, (531), 43 states have call successors, (43), 23 states have call predecessors, (43), 26 states have return successors, (52), 44 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:41:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 626 transitions. [2023-11-22 18:41:18,107 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 626 transitions. Word has length 147 [2023-11-22 18:41:18,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:18,108 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 626 transitions. [2023-11-22 18:41:18,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-22 18:41:18,108 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 626 transitions. [2023-11-22 18:41:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-11-22 18:41:18,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:18,110 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 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] [2023-11-22 18:41:18,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 18:41:18,110 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:18,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:18,111 INFO L85 PathProgramCache]: Analyzing trace with hash -853647844, now seen corresponding path program 1 times [2023-11-22 18:41:18,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:18,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29063179] [2023-11-22 18:41:18,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:18,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:18,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:41:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:41:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:41:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:41:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:18,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:18,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2023-11-22 18:41:18,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:18,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29063179] [2023-11-22 18:41:18,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29063179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:18,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:18,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 18:41:18,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828668270] [2023-11-22 18:41:18,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:18,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 18:41:18,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:18,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 18:41:18,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:41:18,938 INFO L87 Difference]: Start difference. First operand 459 states and 626 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 18:41:19,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:19,558 INFO L93 Difference]: Finished difference Result 920 states and 1268 transitions. [2023-11-22 18:41:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 18:41:19,559 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 153 [2023-11-22 18:41:19,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:19,561 INFO L225 Difference]: With dead ends: 920 [2023-11-22 18:41:19,561 INFO L226 Difference]: Without dead ends: 488 [2023-11-22 18:41:19,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:41:19,562 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 74 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:19,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 1116 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:41:19,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2023-11-22 18:41:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 465. [2023-11-22 18:41:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 394 states have (on average 1.3553299492385786) internal successors, (534), 395 states have internal predecessors, (534), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (53), 46 states have call predecessors, (53), 42 states have call successors, (53) [2023-11-22 18:41:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 630 transitions. [2023-11-22 18:41:19,586 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 630 transitions. Word has length 153 [2023-11-22 18:41:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:19,586 INFO L495 AbstractCegarLoop]: Abstraction has 465 states and 630 transitions. [2023-11-22 18:41:19,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 7 states have internal predecessors, (65), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 18:41:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 630 transitions. [2023-11-22 18:41:19,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-11-22 18:41:19,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:19,588 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 4, 4, 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] [2023-11-22 18:41:19,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 18:41:19,588 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:19,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:19,589 INFO L85 PathProgramCache]: Analyzing trace with hash 362791113, now seen corresponding path program 1 times [2023-11-22 18:41:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:19,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12031093] [2023-11-22 18:41:19,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:19,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-22 18:41:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-22 18:41:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-22 18:41:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-22 18:41:20,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-22 18:41:20,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 7 proven. 715 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:41:20,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12031093] [2023-11-22 18:41:20,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12031093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:20,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244927085] [2023-11-22 18:41:20,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:20,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:20,942 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 18:41:20,962 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 18:41:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:21,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1203 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 18:41:21,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:21,535 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 19 proven. 715 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-22 18:41:21,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:41:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 7 proven. 715 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:41:22,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244927085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:41:22,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:41:22,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2023-11-22 18:41:22,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90414824] [2023-11-22 18:41:22,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:41:22,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-22 18:41:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-22 18:41:22,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 18:41:22,372 INFO L87 Difference]: Start difference. First operand 465 states and 630 transitions. Second operand has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 18:41:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:23,246 INFO L93 Difference]: Finished difference Result 1064 states and 1496 transitions. [2023-11-22 18:41:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-22 18:41:23,247 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 159 [2023-11-22 18:41:23,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:23,250 INFO L225 Difference]: With dead ends: 1064 [2023-11-22 18:41:23,250 INFO L226 Difference]: Without dead ends: 626 [2023-11-22 18:41:23,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1185, Invalid=1467, Unknown=0, NotChecked=0, Total=2652 [2023-11-22 18:41:23,253 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 185 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:23,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 1049 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 18:41:23,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2023-11-22 18:41:23,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 609. [2023-11-22 18:41:23,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 538 states have (on average 1.3494423791821561) internal successors, (726), 539 states have internal predecessors, (726), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (53), 46 states have call predecessors, (53), 42 states have call successors, (53) [2023-11-22 18:41:23,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 822 transitions. [2023-11-22 18:41:23,278 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 822 transitions. Word has length 159 [2023-11-22 18:41:23,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:23,279 INFO L495 AbstractCegarLoop]: Abstraction has 609 states and 822 transitions. [2023-11-22 18:41:23,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.346153846153846) internal successors, (226), 49 states have internal predecessors, (226), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-22 18:41:23,279 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 822 transitions. [2023-11-22 18:41:23,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2023-11-22 18:41:23,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:23,282 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 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] [2023-11-22 18:41:23,304 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 18:41:23,496 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,SelfDestructingSolverStorable10 [2023-11-22 18:41:23,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:23,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:23,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1718024649, now seen corresponding path program 2 times [2023-11-22 18:41:23,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:23,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693330196] [2023-11-22 18:41:23,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:23,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:23,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:41:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:41:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:41:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:41:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 18:41:26,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:26,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-22 18:41:26,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693330196] [2023-11-22 18:41:26,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693330196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:26,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195034732] [2023-11-22 18:41:26,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:41:26,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:26,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:26,685 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 18:41:26,704 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 18:41:27,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:41:27,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:41:27,085 INFO L262 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 18:41:27,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3171 trivial. 0 not checked. [2023-11-22 18:41:27,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:41:27,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195034732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:27,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:41:27,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [52] total 63 [2023-11-22 18:41:27,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938383197] [2023-11-22 18:41:27,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:27,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:41:27,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:27,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:41:27,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1208, Invalid=2698, Unknown=0, NotChecked=0, Total=3906 [2023-11-22 18:41:27,542 INFO L87 Difference]: Start difference. First operand 609 states and 822 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 18:41:28,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:28,023 INFO L93 Difference]: Finished difference Result 1229 states and 1669 transitions. [2023-11-22 18:41:28,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 18:41:28,024 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 231 [2023-11-22 18:41:28,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:28,027 INFO L225 Difference]: With dead ends: 1229 [2023-11-22 18:41:28,027 INFO L226 Difference]: Without dead ends: 647 [2023-11-22 18:41:28,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1221, Invalid=3069, Unknown=0, NotChecked=0, Total=4290 [2023-11-22 18:41:28,031 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 21 mSDsluCounter, 2038 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2228 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:28,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2228 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:41:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-11-22 18:41:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 617. [2023-11-22 18:41:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 544 states have (on average 1.3455882352941178) internal successors, (732), 545 states have internal predecessors, (732), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2023-11-22 18:41:28,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 832 transitions. [2023-11-22 18:41:28,060 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 832 transitions. Word has length 231 [2023-11-22 18:41:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:28,060 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 832 transitions. [2023-11-22 18:41:28,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 10 states have internal predecessors, (69), 4 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-22 18:41:28,061 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 832 transitions. [2023-11-22 18:41:28,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-22 18:41:28,063 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:28,063 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 4, 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] [2023-11-22 18:41:28,081 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 18:41:28,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:28,276 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:28,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:28,277 INFO L85 PathProgramCache]: Analyzing trace with hash 210658838, now seen corresponding path program 1 times [2023-11-22 18:41:28,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:28,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207302170] [2023-11-22 18:41:28,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:28,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:28,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:41:28,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:41:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:41:28,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:41:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:41:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:41:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 18:41:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:28,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-11-22 18:41:28,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:28,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207302170] [2023-11-22 18:41:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207302170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:41:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785270798] [2023-11-22 18:41:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:41:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:41:28,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:41:28,812 INFO L87 Difference]: Start difference. First operand 617 states and 832 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 18:41:29,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:29,335 INFO L93 Difference]: Finished difference Result 936 states and 1274 transitions. [2023-11-22 18:41:29,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:41:29,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 239 [2023-11-22 18:41:29,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:29,339 INFO L225 Difference]: With dead ends: 936 [2023-11-22 18:41:29,339 INFO L226 Difference]: Without dead ends: 636 [2023-11-22 18:41:29,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-22 18:41:29,340 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 195 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:29,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 451 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 18:41:29,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2023-11-22 18:41:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 619. [2023-11-22 18:41:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 546 states have (on average 1.3443223443223444) internal successors, (734), 547 states have internal predecessors, (734), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (55), 48 states have call predecessors, (55), 44 states have call successors, (55) [2023-11-22 18:41:29,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-22 18:41:29,366 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 239 [2023-11-22 18:41:29,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:29,367 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-22 18:41:29,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (11), 7 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 18:41:29,367 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-22 18:41:29,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-22 18:41:29,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:29,370 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 4, 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] [2023-11-22 18:41:29,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 18:41:29,370 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:29,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:29,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1341288931, now seen corresponding path program 1 times [2023-11-22 18:41:29,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:29,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216759923] [2023-11-22 18:41:29,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:29,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:29,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:29,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:41:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:41:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:29,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:41:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:41:30,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:30,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2023-11-22 18:41:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2023-11-22 18:41:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2023-11-22 18:41:30,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:30,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3184 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3177 trivial. 0 not checked. [2023-11-22 18:41:30,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:30,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216759923] [2023-11-22 18:41:30,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216759923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:30,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:41:30,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-22 18:41:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438285874] [2023-11-22 18:41:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:30,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 18:41:30,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 18:41:30,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:41:30,425 INFO L87 Difference]: Start difference. First operand 619 states and 834 transitions. Second operand has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 18:41:32,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:32,277 INFO L93 Difference]: Finished difference Result 1237 states and 1674 transitions. [2023-11-22 18:41:32,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-22 18:41:32,277 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 240 [2023-11-22 18:41:32,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:32,280 INFO L225 Difference]: With dead ends: 1237 [2023-11-22 18:41:32,280 INFO L226 Difference]: Without dead ends: 645 [2023-11-22 18:41:32,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2023-11-22 18:41:32,282 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 327 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:32,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 890 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 18:41:32,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-11-22 18:41:32,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 618. [2023-11-22 18:41:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 545 states have (on average 1.3394495412844036) internal successors, (730), 546 states have internal predecessors, (730), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (54), 48 states have call predecessors, (54), 44 states have call successors, (54) [2023-11-22 18:41:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 829 transitions. [2023-11-22 18:41:32,308 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 829 transitions. Word has length 240 [2023-11-22 18:41:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:32,308 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 829 transitions. [2023-11-22 18:41:32,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.166666666666667) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (11), 7 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 18:41:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 829 transitions. [2023-11-22 18:41:32,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2023-11-22 18:41:32,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:32,312 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 4, 4, 3, 3, 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] [2023-11-22 18:41:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 18:41:32,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:32,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 416410056, now seen corresponding path program 1 times [2023-11-22 18:41:32,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:32,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224373786] [2023-11-22 18:41:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:34,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2023-11-22 18:41:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2023-11-22 18:41:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2023-11-22 18:41:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2023-11-22 18:41:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2023-11-22 18:41:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2023-11-22 18:41:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2023-11-22 18:41:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2023-11-22 18:41:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:35,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:41:35,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224373786] [2023-11-22 18:41:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224373786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:35,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049783191] [2023-11-22 18:41:35,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:35,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:35,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:35,389 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 18:41:35,416 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 18:41:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:36,042 INFO L262 TraceCheckSpWp]: Trace formula consists of 1930 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-22 18:41:36,048 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:36,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 19 proven. 3151 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:41:36,200 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:41:38,894 INFO L134 CoverageAnalysis]: Checked inductivity of 3188 backedges. 7 proven. 3151 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:41:38,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049783191] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:41:38,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:41:38,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 102 [2023-11-22 18:41:38,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723574149] [2023-11-22 18:41:38,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:41:38,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2023-11-22 18:41:38,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:38,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2023-11-22 18:41:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4672, Invalid=5630, Unknown=0, NotChecked=0, Total=10302 [2023-11-22 18:41:38,901 INFO L87 Difference]: Start difference. First operand 618 states and 829 transitions. Second operand has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:41:40,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:40,546 INFO L93 Difference]: Finished difference Result 1516 states and 2137 transitions. [2023-11-22 18:41:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-11-22 18:41:40,547 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 252 [2023-11-22 18:41:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:40,554 INFO L225 Difference]: With dead ends: 1516 [2023-11-22 18:41:40,554 INFO L226 Difference]: Without dead ends: 925 [2023-11-22 18:41:40,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 477 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 755 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=4684, Invalid=6028, Unknown=0, NotChecked=0, Total=10712 [2023-11-22 18:41:40,563 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 555 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:40,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 1401 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 18:41:40,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2023-11-22 18:41:40,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 906. [2023-11-22 18:41:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 906 states, 833 states have (on average 1.3373349339735894) internal successors, (1114), 834 states have internal predecessors, (1114), 45 states have call successors, (45), 23 states have call predecessors, (45), 27 states have return successors, (54), 48 states have call predecessors, (54), 44 states have call successors, (54) [2023-11-22 18:41:40,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1213 transitions. [2023-11-22 18:41:40,592 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1213 transitions. Word has length 252 [2023-11-22 18:41:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:40,593 INFO L495 AbstractCegarLoop]: Abstraction has 906 states and 1213 transitions. [2023-11-22 18:41:40,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 3.843137254901961) internal successors, (392), 97 states have internal predecessors, (392), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:41:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1213 transitions. [2023-11-22 18:41:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 18:41:40,598 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:40,598 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 4, 4, 3, 3, 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] [2023-11-22 18:41:40,620 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 18:41:40,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:40,812 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:40,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:40,813 INFO L85 PathProgramCache]: Analyzing trace with hash -604915768, now seen corresponding path program 2 times [2023-11-22 18:41:40,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:40,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353064383] [2023-11-22 18:41:40,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:40,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 18:41:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 18:41:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 18:41:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 18:41:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 18:41:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 18:41:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 18:41:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 18:41:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:41:48,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353064383] [2023-11-22 18:41:48,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353064383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:48,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259760818] [2023-11-22 18:41:48,985 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:41:48,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:48,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:48,986 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 18:41:48,987 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 18:41:49,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:41:49,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:41:49,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:41:49,559 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13237 trivial. 0 not checked. [2023-11-22 18:41:49,615 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:41:49,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259760818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:41:49,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:41:49,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [102] total 103 [2023-11-22 18:41:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017701452] [2023-11-22 18:41:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:41:49,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 18:41:49,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:41:49,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 18:41:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 18:41:49,622 INFO L87 Difference]: Start difference. First operand 906 states and 1213 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:41:49,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:41:49,698 INFO L93 Difference]: Finished difference Result 1783 states and 2389 transitions. [2023-11-22 18:41:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 18:41:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 396 [2023-11-22 18:41:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:41:49,706 INFO L225 Difference]: With dead ends: 1783 [2023-11-22 18:41:49,706 INFO L226 Difference]: Without dead ends: 904 [2023-11-22 18:41:49,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=4674, Invalid=5832, Unknown=0, NotChecked=0, Total=10506 [2023-11-22 18:41:49,713 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 7 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:41:49,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 323 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 18:41:49,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-22 18:41:49,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 902. [2023-11-22 18:41:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 902 states, 831 states have (on average 1.3357400722021662) internal successors, (1110), 832 states have internal predecessors, (1110), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:41:49,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 902 states to 902 states and 1205 transitions. [2023-11-22 18:41:49,747 INFO L78 Accepts]: Start accepts. Automaton has 902 states and 1205 transitions. Word has length 396 [2023-11-22 18:41:49,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:41:49,748 INFO L495 AbstractCegarLoop]: Abstraction has 902 states and 1205 transitions. [2023-11-22 18:41:49,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:41:49,749 INFO L276 IsEmpty]: Start isEmpty. Operand 902 states and 1205 transitions. [2023-11-22 18:41:49,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2023-11-22 18:41:49,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:41:49,754 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 4, 4, 3, 3, 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] [2023-11-22 18:41:49,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-22 18:41:49,971 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,SelfDestructingSolverStorable15 [2023-11-22 18:41:49,971 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:41:49,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:41:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1068362812, now seen corresponding path program 1 times [2023-11-22 18:41:49,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:41:49,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268414134] [2023-11-22 18:41:49,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:49,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:41:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:41:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 18:41:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2023-11-22 18:41:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2023-11-22 18:41:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 18:41:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:41:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:41:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 354 [2023-11-22 18:41:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2023-11-22 18:41:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 369 [2023-11-22 18:41:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2023-11-22 18:41:57,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:41:57,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:41:57,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268414134] [2023-11-22 18:41:57,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268414134] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:41:57,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371409051] [2023-11-22 18:41:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:41:57,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:41:57,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:41:57,497 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 18:41:57,498 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 18:41:58,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:41:58,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-22 18:41:58,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:41:58,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 19 proven. 13207 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-22 18:41:58,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:42:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 13244 backedges. 7 proven. 13207 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:42:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371409051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:42:08,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:42:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 97, 97] total 198 [2023-11-22 18:42:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898965251] [2023-11-22 18:42:08,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:42:08,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 198 states [2023-11-22 18:42:08,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:42:08,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 198 interpolants. [2023-11-22 18:42:08,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18544, Invalid=20462, Unknown=0, NotChecked=0, Total=39006 [2023-11-22 18:42:08,096 INFO L87 Difference]: Start difference. First operand 902 states and 1205 transitions. Second operand has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:42:13,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:42:13,700 INFO L93 Difference]: Finished difference Result 2372 states and 3367 transitions. [2023-11-22 18:42:13,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2023-11-22 18:42:13,701 INFO L78 Accepts]: Start accepts. Automaton has has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 396 [2023-11-22 18:42:13,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:42:13,706 INFO L225 Difference]: With dead ends: 2372 [2023-11-22 18:42:13,706 INFO L226 Difference]: Without dead ends: 1497 [2023-11-22 18:42:13,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 915 GetRequests, 717 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=18556, Invalid=21244, Unknown=0, NotChecked=0, Total=39800 [2023-11-22 18:42:13,711 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 819 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 1359 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:42:13,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1493 Invalid, 1403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1359 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 18:42:13,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2023-11-22 18:42:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1478. [2023-11-22 18:42:13,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1478 states, 1407 states have (on average 1.3347547974413647) internal successors, (1878), 1408 states have internal predecessors, (1878), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:42:13,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 1973 transitions. [2023-11-22 18:42:13,752 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 1973 transitions. Word has length 396 [2023-11-22 18:42:13,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:42:13,752 INFO L495 AbstractCegarLoop]: Abstraction has 1478 states and 1973 transitions. [2023-11-22 18:42:13,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 198 states, 198 states have (on average 3.4343434343434343) internal successors, (680), 193 states have internal predecessors, (680), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:42:13,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 1973 transitions. [2023-11-22 18:42:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 685 [2023-11-22 18:42:13,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:42:13,758 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 4, 4, 3, 3, 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] [2023-11-22 18:42:13,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-22 18:42:13,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-22 18:42:13,976 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:42:13,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:42:13,977 INFO L85 PathProgramCache]: Analyzing trace with hash 366849988, now seen corresponding path program 2 times [2023-11-22 18:42:13,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:42:13,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382821345] [2023-11-22 18:42:13,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:42:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:42:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:42:41,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:42:41,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 18:42:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 18:42:41,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 18:42:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 18:42:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:42:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:42:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 18:42:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 18:42:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 18:42:41,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-11-22 18:42:41,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:42:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 54092 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-22 18:42:41,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:42:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382821345] [2023-11-22 18:42:41,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382821345] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:42:41,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727896632] [2023-11-22 18:42:41,875 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 18:42:41,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:42:41,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:42:41,880 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:42:41,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-22 18:42:42,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 18:42:42,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 18:42:42,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-22 18:42:42,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:42:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 54092 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 54085 trivial. 0 not checked. [2023-11-22 18:42:43,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 18:42:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727896632] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:42:43,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 18:42:43,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [198] total 201 [2023-11-22 18:42:43,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412061204] [2023-11-22 18:42:43,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:42:43,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 18:42:43,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:42:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 18:42:43,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18550, Invalid=21650, Unknown=0, NotChecked=0, Total=40200 [2023-11-22 18:42:43,005 INFO L87 Difference]: Start difference. First operand 1478 states and 1973 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-22 18:42:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:42:43,236 INFO L93 Difference]: Finished difference Result 2937 states and 3927 transitions. [2023-11-22 18:42:43,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 18:42:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 684 [2023-11-22 18:42:43,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:42:43,243 INFO L225 Difference]: With dead ends: 2937 [2023-11-22 18:42:43,243 INFO L226 Difference]: Without dead ends: 1482 [2023-11-22 18:42:43,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=18554, Invalid=22048, Unknown=0, NotChecked=0, Total=40602 [2023-11-22 18:42:43,248 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 8 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:42:43,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 646 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:42:43,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-22 18:42:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1480. [2023-11-22 18:42:43,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1409 states have (on average 1.3342796309439318) internal successors, (1880), 1410 states have internal predecessors, (1880), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:42:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1975 transitions. [2023-11-22 18:42:43,286 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1975 transitions. Word has length 684 [2023-11-22 18:42:43,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:42:43,286 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 1975 transitions. [2023-11-22 18:42:43,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-22 18:42:43,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1975 transitions. [2023-11-22 18:42:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2023-11-22 18:42:43,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:42:43,292 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 4, 4, 3, 3, 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] [2023-11-22 18:42:43,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-22 18:42:43,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 18:42:43,507 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:42:43,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:42:43,507 INFO L85 PathProgramCache]: Analyzing trace with hash 438942908, now seen corresponding path program 1 times [2023-11-22 18:42:43,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:42:43,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155153841] [2023-11-22 18:42:43,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:42:43,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:42:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 593 [2023-11-22 18:43:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2023-11-22 18:43:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 613 [2023-11-22 18:43:10,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 619 [2023-11-22 18:43:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 642 [2023-11-22 18:43:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 650 [2023-11-22 18:43:10,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2023-11-22 18:43:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 18:43:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 18:43:10,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:10,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155153841] [2023-11-22 18:43:10,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155153841] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:43:10,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339584941] [2023-11-22 18:43:10,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:10,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:10,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:43:10,962 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:43:10,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-22 18:43:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:12,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 5036 conjuncts, 192 conjunts are in the unsatisfiable core [2023-11-22 18:43:12,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:43:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 19 proven. 54055 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-22 18:43:12,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:43:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 54093 backedges. 7 proven. 54055 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-22 18:43:33,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339584941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:43:33,582 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:43:33,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [198, 193, 193] total 264 [2023-11-22 18:43:33,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51308500] [2023-11-22 18:43:33,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:43:33,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 264 states [2023-11-22 18:43:33,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:33,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 264 interpolants. [2023-11-22 18:43:33,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33427, Invalid=36005, Unknown=0, NotChecked=0, Total=69432 [2023-11-22 18:43:33,601 INFO L87 Difference]: Start difference. First operand 1480 states and 1975 transitions. Second operand has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:43:46,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:46,435 INFO L93 Difference]: Finished difference Result 3342 states and 4597 transitions. [2023-11-22 18:43:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2023-11-22 18:43:46,436 INFO L78 Accepts]: Start accepts. Automaton has has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 685 [2023-11-22 18:43:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:46,443 INFO L225 Difference]: With dead ends: 3342 [2023-11-22 18:43:46,443 INFO L226 Difference]: Without dead ends: 1889 [2023-11-22 18:43:46,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1589 GetRequests, 1199 SyntacticMatches, 126 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18242 ImplicationChecksByTransitivity, 32.4s TimeCoverageRelationStatistics Valid=33439, Invalid=37051, Unknown=0, NotChecked=0, Total=70490 [2023-11-22 18:43:46,449 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 1359 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1415 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1360 SdHoareTripleChecker+Valid, 1332 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:46,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1360 Valid, 1332 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1415 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 18:43:46,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2023-11-22 18:43:46,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1876. [2023-11-22 18:43:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1876 states, 1805 states have (on average 1.3340720221606648) internal successors, (2408), 1806 states have internal predecessors, (2408), 43 states have call successors, (43), 23 states have call predecessors, (43), 27 states have return successors, (52), 46 states have call predecessors, (52), 42 states have call successors, (52) [2023-11-22 18:43:46,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1876 states to 1876 states and 2503 transitions. [2023-11-22 18:43:46,492 INFO L78 Accepts]: Start accepts. Automaton has 1876 states and 2503 transitions. Word has length 685 [2023-11-22 18:43:46,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:46,493 INFO L495 AbstractCegarLoop]: Abstraction has 1876 states and 2503 transitions. [2023-11-22 18:43:46,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 264 states, 264 states have (on average 3.3446969696969697) internal successors, (883), 259 states have internal predecessors, (883), 2 states have call successors, (32), 7 states have call predecessors, (32), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-22 18:43:46,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1876 states and 2503 transitions. [2023-11-22 18:43:46,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 884 [2023-11-22 18:43:46,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:46,501 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 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] [2023-11-22 18:43:46,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-22 18:43:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:43:46,728 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:46,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -106995332, now seen corresponding path program 2 times [2023-11-22 18:43:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:46,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450568695] [2023-11-22 18:43:46,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:49,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:43:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:43:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:43:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:43:49,117 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 1 [2023-11-22 18:43:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:49,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:43:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:43:49,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:43:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:43:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 98214 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98207 trivial. 0 not checked. [2023-11-22 18:43:49,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:49,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450568695] [2023-11-22 18:43:49,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450568695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:49,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:49,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-22 18:43:49,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604427762] [2023-11-22 18:43:49,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:49,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-22 18:43:49,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-22 18:43:49,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:43:49,363 INFO L87 Difference]: Start difference. First operand 1876 states and 2503 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:43:51,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:51,415 INFO L93 Difference]: Finished difference Result 3778 states and 5049 transitions. [2023-11-22 18:43:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-22 18:43:51,415 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 883 [2023-11-22 18:43:51,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:51,425 INFO L225 Difference]: With dead ends: 3778 [2023-11-22 18:43:51,425 INFO L226 Difference]: Without dead ends: 2847 [2023-11-22 18:43:51,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2023-11-22 18:43:51,428 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 807 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:51,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1509 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:43:51,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2023-11-22 18:43:51,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2806. [2023-11-22 18:43:51,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.3350610884857461) internal successors, (3606), 2704 states have internal predecessors, (3606), 63 states have call successors, (63), 33 states have call predecessors, (63), 41 states have return successors, (78), 68 states have call predecessors, (78), 62 states have call successors, (78) [2023-11-22 18:43:51,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3747 transitions. [2023-11-22 18:43:51,503 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3747 transitions. Word has length 883 [2023-11-22 18:43:51,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:51,504 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3747 transitions. [2023-11-22 18:43:51,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 8 states have internal predecessors, (81), 5 states have call successors, (13), 7 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:43:51,505 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3747 transitions. [2023-11-22 18:43:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2023-11-22 18:43:51,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:51,512 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 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] [2023-11-22 18:43:51,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 18:43:51,513 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:51,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:51,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1214787665, now seen corresponding path program 1 times [2023-11-22 18:43:51,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:51,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568313742] [2023-11-22 18:43:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:43:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:43:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:43:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:43:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:53,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:43:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:43:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:43:53,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:43:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:53,233 INFO L134 CoverageAnalysis]: Checked inductivity of 98214 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98207 trivial. 0 not checked. [2023-11-22 18:43:53,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:53,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568313742] [2023-11-22 18:43:53,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568313742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:53,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:53,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 18:43:53,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021255360] [2023-11-22 18:43:53,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:53,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:43:53,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:53,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:43:53,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 18:43:53,235 INFO L87 Difference]: Start difference. First operand 2806 states and 3747 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:43:53,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:53,906 INFO L93 Difference]: Finished difference Result 4684 states and 6266 transitions. [2023-11-22 18:43:53,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 18:43:53,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 884 [2023-11-22 18:43:53,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:53,917 INFO L225 Difference]: With dead ends: 4684 [2023-11-22 18:43:53,917 INFO L226 Difference]: Without dead ends: 2826 [2023-11-22 18:43:53,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2023-11-22 18:43:53,919 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 137 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:53,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 640 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:43:53,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2023-11-22 18:43:53,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2806. [2023-11-22 18:43:53,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2701 states have (on average 1.3343206219918549) internal successors, (3604), 2704 states have internal predecessors, (3604), 63 states have call successors, (63), 33 states have call predecessors, (63), 41 states have return successors, (78), 68 states have call predecessors, (78), 62 states have call successors, (78) [2023-11-22 18:43:54,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3745 transitions. [2023-11-22 18:43:54,001 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3745 transitions. Word has length 884 [2023-11-22 18:43:54,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:54,002 INFO L495 AbstractCegarLoop]: Abstraction has 2806 states and 3745 transitions. [2023-11-22 18:43:54,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (13), 7 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-22 18:43:54,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3745 transitions. [2023-11-22 18:43:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 18:43:54,010 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:54,011 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 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] [2023-11-22 18:43:54,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 18:43:54,011 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:54,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:54,012 INFO L85 PathProgramCache]: Analyzing trace with hash -489376054, now seen corresponding path program 1 times [2023-11-22 18:43:54,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:54,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872537464] [2023-11-22 18:43:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:54,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:57,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:43:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:43:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:43:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:43:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:43:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:43:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:43:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:43:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:43:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:43:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:43:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:43:57,525 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:43:57,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:43:57,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872537464] [2023-11-22 18:43:57,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872537464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:43:57,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:43:57,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-22 18:43:57,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673109864] [2023-11-22 18:43:57,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:43:57,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-22 18:43:57,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:43:57,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-22 18:43:57,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:43:57,528 INFO L87 Difference]: Start difference. First operand 2806 states and 3745 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-22 18:43:58,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:43:58,256 INFO L93 Difference]: Finished difference Result 5695 states and 7633 transitions. [2023-11-22 18:43:58,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 18:43:58,257 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 886 [2023-11-22 18:43:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:43:58,266 INFO L225 Difference]: With dead ends: 5695 [2023-11-22 18:43:58,266 INFO L226 Difference]: Without dead ends: 2916 [2023-11-22 18:43:58,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-22 18:43:58,272 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 267 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 18:43:58,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 549 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 18:43:58,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2023-11-22 18:43:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 2866. [2023-11-22 18:43:58,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2746 states have (on average 1.3310269482884196) internal successors, (3655), 2746 states have internal predecessors, (3655), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:43:58,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 3832 transitions. [2023-11-22 18:43:58,349 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 3832 transitions. Word has length 886 [2023-11-22 18:43:58,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:43:58,351 INFO L495 AbstractCegarLoop]: Abstraction has 2866 states and 3832 transitions. [2023-11-22 18:43:58,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 5 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2023-11-22 18:43:58,351 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 3832 transitions. [2023-11-22 18:43:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2023-11-22 18:43:58,358 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:43:58,359 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 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] [2023-11-22 18:43:58,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 18:43:58,359 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:43:58,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:43:58,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1456726708, now seen corresponding path program 1 times [2023-11-22 18:43:58,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:43:58,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635547845] [2023-11-22 18:43:58,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:43:58,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:43:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 18:44:00,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 791 [2023-11-22 18:44:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 797 [2023-11-22 18:44:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2023-11-22 18:44:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2023-11-22 18:44:00,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 840 [2023-11-22 18:44:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 848 [2023-11-22 18:44:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:00,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 855 [2023-11-22 18:44:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:01,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 864 [2023-11-22 18:44:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98216 trivial. 0 not checked. [2023-11-22 18:44:01,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635547845] [2023-11-22 18:44:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635547845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 18:44:01,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 18:44:01,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 18:44:01,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069969208] [2023-11-22 18:44:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:01,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 18:44:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:01,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 18:44:01,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-22 18:44:01,042 INFO L87 Difference]: Start difference. First operand 2866 states and 3832 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:44:01,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:01,516 INFO L93 Difference]: Finished difference Result 5739 states and 7690 transitions. [2023-11-22 18:44:01,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 18:44:01,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 886 [2023-11-22 18:44:01,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:01,525 INFO L225 Difference]: With dead ends: 5739 [2023-11-22 18:44:01,525 INFO L226 Difference]: Without dead ends: 2887 [2023-11-22 18:44:01,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 18:44:01,529 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 85 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 515 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:01,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 515 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 18:44:01,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2887 states. [2023-11-22 18:44:01,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2887 to 2867. [2023-11-22 18:44:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2867 states, 2747 states have (on average 1.3309064433927922) internal successors, (3656), 2747 states have internal predecessors, (3656), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:44:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2867 states to 2867 states and 3833 transitions. [2023-11-22 18:44:01,598 INFO L78 Accepts]: Start accepts. Automaton has 2867 states and 3833 transitions. Word has length 886 [2023-11-22 18:44:01,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:01,599 INFO L495 AbstractCegarLoop]: Abstraction has 2867 states and 3833 transitions. [2023-11-22 18:44:01,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (13), 7 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:44:01,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2867 states and 3833 transitions. [2023-11-22 18:44:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2023-11-22 18:44:01,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:01,607 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 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] [2023-11-22 18:44:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 18:44:01,608 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:01,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:01,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1418859270, now seen corresponding path program 1 times [2023-11-22 18:44:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706534212] [2023-11-22 18:44:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:01,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:04,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:44:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:44:04,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:44:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:44:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:44:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:04,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:44:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:44:04,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:44:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 865 [2023-11-22 18:44:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:44:04,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706534212] [2023-11-22 18:44:04,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706534212] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:04,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909081555] [2023-11-22 18:44:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:04,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:04,525 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:04,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-22 18:44:06,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:06,642 INFO L262 TraceCheckSpWp]: Trace formula consists of 6446 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 18:44:06,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:44:06,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:44:06,784 INFO L134 CoverageAnalysis]: Checked inductivity of 98217 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:44:06,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909081555] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:06,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:44:06,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11, 5] total 12 [2023-11-22 18:44:06,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398637536] [2023-11-22 18:44:06,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:06,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 18:44:06,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:06,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 18:44:06,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:44:06,787 INFO L87 Difference]: Start difference. First operand 2867 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:44:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:06,928 INFO L93 Difference]: Finished difference Result 5709 states and 7644 transitions. [2023-11-22 18:44:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 18:44:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 887 [2023-11-22 18:44:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:06,948 INFO L225 Difference]: With dead ends: 5709 [2023-11-22 18:44:06,953 INFO L226 Difference]: Without dead ends: 2870 [2023-11-22 18:44:06,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1802 GetRequests, 1789 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-22 18:44:06,959 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 3 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:06,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 488 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 18:44:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2870 states. [2023-11-22 18:44:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2870 to 2870. [2023-11-22 18:44:07,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2750 states have (on average 1.3305454545454545) internal successors, (3659), 2750 states have internal predecessors, (3659), 78 states have call successors, (78), 33 states have call predecessors, (78), 41 states have return successors, (99), 86 states have call predecessors, (99), 77 states have call successors, (99) [2023-11-22 18:44:07,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 3836 transitions. [2023-11-22 18:44:07,038 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 3836 transitions. Word has length 887 [2023-11-22 18:44:07,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:07,039 INFO L495 AbstractCegarLoop]: Abstraction has 2870 states and 3836 transitions. [2023-11-22 18:44:07,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-22 18:44:07,040 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 3836 transitions. [2023-11-22 18:44:07,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 889 [2023-11-22 18:44:07,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:07,049 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 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] [2023-11-22 18:44:07,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:07,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-22 18:44:07,277 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:07,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash -342286448, now seen corresponding path program 1 times [2023-11-22 18:44:07,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:07,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538875658] [2023-11-22 18:44:07,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:07,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:44:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:44:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:44:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:44:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:44:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:09,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:44:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:44:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:44:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 18:44:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98210 trivial. 0 not checked. [2023-11-22 18:44:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538875658] [2023-11-22 18:44:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538875658] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:09,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801997435] [2023-11-22 18:44:09,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:09,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:09,856 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:09,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-22 18:44:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:13,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 6465 conjuncts, 95 conjunts are in the unsatisfiable core [2023-11-22 18:44:13,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:14,320 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 18:44:14,326 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 18:44:14,538 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 18:44:14,687 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 98191 trivial. 0 not checked. [2023-11-22 18:44:14,687 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:44:15,173 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 35 treesize of output 33 [2023-11-22 18:44:15,178 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 48 treesize of output 46 [2023-11-22 18:44:15,185 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 23 treesize of output 21 [2023-11-22 18:44:15,190 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 29 treesize of output 27 [2023-11-22 18:44:15,318 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 33 treesize of output 31 [2023-11-22 18:44:15,320 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 31 treesize of output 29 [2023-11-22 18:44:15,334 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 52 treesize of output 50 [2023-11-22 18:44:15,343 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 127 treesize of output 119 [2023-11-22 18:44:16,279 INFO L134 CoverageAnalysis]: Checked inductivity of 98218 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 98209 trivial. 0 not checked. [2023-11-22 18:44:16,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801997435] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:16,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:44:16,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [11, 20] total 41 [2023-11-22 18:44:16,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077573186] [2023-11-22 18:44:16,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:16,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 18:44:16,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:16,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 18:44:16,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1511, Unknown=0, NotChecked=0, Total=1640 [2023-11-22 18:44:16,282 INFO L87 Difference]: Start difference. First operand 2870 states and 3836 transitions. Second operand has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-22 18:44:17,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:17,900 INFO L93 Difference]: Finished difference Result 4837 states and 6468 transitions. [2023-11-22 18:44:17,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-22 18:44:17,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 888 [2023-11-22 18:44:17,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:17,908 INFO L225 Difference]: With dead ends: 4837 [2023-11-22 18:44:17,908 INFO L226 Difference]: Without dead ends: 2937 [2023-11-22 18:44:17,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1766 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=216, Invalid=2540, Unknown=0, NotChecked=0, Total=2756 [2023-11-22 18:44:17,915 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 376 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 1245 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:17,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 1401 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1245 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 18:44:17,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2023-11-22 18:44:17,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2905. [2023-11-22 18:44:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2905 states, 2776 states have (on average 1.3285302593659942) internal successors, (3688), 2776 states have internal predecessors, (3688), 86 states have call successors, (86), 33 states have call predecessors, (86), 42 states have return successors, (108), 95 states have call predecessors, (108), 85 states have call successors, (108) [2023-11-22 18:44:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2905 states to 2905 states and 3882 transitions. [2023-11-22 18:44:18,002 INFO L78 Accepts]: Start accepts. Automaton has 2905 states and 3882 transitions. Word has length 888 [2023-11-22 18:44:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:18,003 INFO L495 AbstractCegarLoop]: Abstraction has 2905 states and 3882 transitions. [2023-11-22 18:44:18,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.142857142857143) internal successors, (86), 13 states have internal predecessors, (86), 7 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2023-11-22 18:44:18,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2905 states and 3882 transitions. [2023-11-22 18:44:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2023-11-22 18:44:18,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:18,011 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 4, 4, 3, 3, 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] [2023-11-22 18:44:18,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:18,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-22 18:44:18,230 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:18,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash -324287879, now seen corresponding path program 1 times [2023-11-22 18:44:18,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:18,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950089621] [2023-11-22 18:44:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:18,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:44:20,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:44:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:44:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:44:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:44:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:44:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:44:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:44:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 18:44:20,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:20,807 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 98208 trivial. 0 not checked. [2023-11-22 18:44:20,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950089621] [2023-11-22 18:44:20,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950089621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:20,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440811217] [2023-11-22 18:44:20,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:20,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:20,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:20,808 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:20,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-22 18:44:23,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:23,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 6469 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-22 18:44:23,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:24,173 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 98200 trivial. 0 not checked. [2023-11-22 18:44:24,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:44:25,092 INFO L134 CoverageAnalysis]: Checked inductivity of 98216 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98216 trivial. 0 not checked. [2023-11-22 18:44:25,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440811217] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:25,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 18:44:25,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11, 8] total 21 [2023-11-22 18:44:25,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734155072] [2023-11-22 18:44:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 18:44:25,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 18:44:25,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:25,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 18:44:25,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2023-11-22 18:44:25,094 INFO L87 Difference]: Start difference. First operand 2905 states and 3882 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:44:25,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:25,780 INFO L93 Difference]: Finished difference Result 6765 states and 9039 transitions. [2023-11-22 18:44:25,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 18:44:25,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 889 [2023-11-22 18:44:25,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:25,791 INFO L225 Difference]: With dead ends: 6765 [2023-11-22 18:44:25,795 INFO L226 Difference]: Without dead ends: 4844 [2023-11-22 18:44:25,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1788 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2023-11-22 18:44:25,800 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 570 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 1015 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:25,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 1015 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 18:44:25,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2023-11-22 18:44:25,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4824. [2023-11-22 18:44:25,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4824 states, 4612 states have (on average 1.328707718993929) internal successors, (6128), 4613 states have internal predecessors, (6128), 137 states have call successors, (137), 58 states have call predecessors, (137), 74 states have return successors, (174), 152 states have call predecessors, (174), 136 states have call successors, (174) [2023-11-22 18:44:25,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4824 states to 4824 states and 6439 transitions. [2023-11-22 18:44:25,946 INFO L78 Accepts]: Start accepts. Automaton has 4824 states and 6439 transitions. Word has length 889 [2023-11-22 18:44:25,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:25,947 INFO L495 AbstractCegarLoop]: Abstraction has 4824 states and 6439 transitions. [2023-11-22 18:44:25,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 9 states have internal predecessors, (83), 5 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-22 18:44:25,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4824 states and 6439 transitions. [2023-11-22 18:44:25,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 948 [2023-11-22 18:44:25,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:25,957 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 5, 5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:44:25,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:26,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:26,177 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:26,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1834958916, now seen corresponding path program 1 times [2023-11-22 18:44:26,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:26,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932355000] [2023-11-22 18:44:26,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:26,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:44:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:44:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:44:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:44:28,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:44:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:28,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:44:28,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:44:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:44:28,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 18:44:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 886 [2023-11-22 18:44:28,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2023-11-22 18:44:28,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 907 [2023-11-22 18:44:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 914 [2023-11-22 18:44:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2023-11-22 18:44:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:28,903 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 42 proven. 9 refuted. 0 times theorem prover too weak. 98249 trivial. 0 not checked. [2023-11-22 18:44:28,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:28,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932355000] [2023-11-22 18:44:28,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932355000] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:28,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667145902] [2023-11-22 18:44:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:28,905 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:28,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-22 18:44:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:31,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 7051 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-22 18:44:31,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 18:44:32,413 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 53 proven. 23 refuted. 0 times theorem prover too weak. 98224 trivial. 0 not checked. [2023-11-22 18:44:32,414 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 18:44:33,334 INFO L134 CoverageAnalysis]: Checked inductivity of 98300 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 98265 trivial. 0 not checked. [2023-11-22 18:44:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667145902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 18:44:33,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 18:44:33,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 10] total 25 [2023-11-22 18:44:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111656805] [2023-11-22 18:44:33,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 18:44:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-22 18:44:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 18:44:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-22 18:44:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2023-11-22 18:44:33,337 INFO L87 Difference]: Start difference. First operand 4824 states and 6439 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-11-22 18:44:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 18:44:36,975 INFO L93 Difference]: Finished difference Result 12495 states and 16771 transitions. [2023-11-22 18:44:36,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-22 18:44:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) Word has length 947 [2023-11-22 18:44:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 18:44:36,991 INFO L225 Difference]: With dead ends: 12495 [2023-11-22 18:44:36,991 INFO L226 Difference]: Without dead ends: 8697 [2023-11-22 18:44:36,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1980 GetRequests, 1917 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=852, Invalid=2688, Unknown=0, NotChecked=0, Total=3540 [2023-11-22 18:44:36,999 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 1148 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-22 18:44:36,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1386 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-22 18:44:37,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8697 states. [2023-11-22 18:44:37,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8697 to 8629. [2023-11-22 18:44:37,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8629 states, 8262 states have (on average 1.3299443234083757) internal successors, (10988), 8266 states have internal predecessors, (10988), 237 states have call successors, (237), 98 states have call predecessors, (237), 129 states have return successors, (316), 264 states have call predecessors, (316), 236 states have call successors, (316) [2023-11-22 18:44:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8629 states to 8629 states and 11541 transitions. [2023-11-22 18:44:37,265 INFO L78 Accepts]: Start accepts. Automaton has 8629 states and 11541 transitions. Word has length 947 [2023-11-22 18:44:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 18:44:37,266 INFO L495 AbstractCegarLoop]: Abstraction has 8629 states and 11541 transitions. [2023-11-22 18:44:37,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 20 states have internal predecessors, (224), 7 states have call successors, (45), 12 states have call predecessors, (45), 11 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2023-11-22 18:44:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8629 states and 11541 transitions. [2023-11-22 18:44:37,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2023-11-22 18:44:37,276 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 18:44:37,277 INFO L195 NwaCegarLoop]: trace histogram [256, 256, 256, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-22 18:44:37,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-22 18:44:37,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 18:44:37,495 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 18:44:37,495 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 18:44:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash 374680935, now seen corresponding path program 1 times [2023-11-22 18:44:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 18:44:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119013388] [2023-11-22 18:44:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 18:44:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 18:44:39,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2023-11-22 18:44:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 798 [2023-11-22 18:44:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:39,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 812 [2023-11-22 18:44:39,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 818 [2023-11-22 18:44:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2023-11-22 18:44:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2023-11-22 18:44:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 856 [2023-11-22 18:44:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2023-11-22 18:44:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 886 [2023-11-22 18:44:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 892 [2023-11-22 18:44:40,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 18:44:40,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-22 18:44:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 915 [2023-11-22 18:44:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 923 [2023-11-22 18:44:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2023-11-22 18:44:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 940 [2023-11-22 18:44:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 18:44:40,369 INFO L134 CoverageAnalysis]: Checked inductivity of 98320 backedges. 48 proven. 5 refuted. 0 times theorem prover too weak. 98267 trivial. 0 not checked. [2023-11-22 18:44:40,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 18:44:40,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119013388] [2023-11-22 18:44:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119013388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 18:44:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078193708] [2023-11-22 18:44:40,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 18:44:40,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 18:44:40,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 18:44:40,371 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 18:44:40,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process Killed by 15