./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c --full-output --preprocessor.use.memory.slicer true --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/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c -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 a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-dev-6ae2ee4-m [2023-11-22 22:39:58,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 22:39:58,640 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 22:39:58,645 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 22:39:58,646 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 22:39:58,669 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 22:39:58,670 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 22:39:58,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 22:39:58,671 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 22:39:58,674 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 22:39:58,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 22:39:58,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 22:39:58,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 22:39:58,676 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 22:39:58,676 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 22:39:58,676 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 22:39:58,676 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 22:39:58,677 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 22:39:58,677 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 22:39:58,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 22:39:58,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 22:39:58,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 22:39:58,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 22:39:58,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 22:39:58,678 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 22:39:58,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 22:39:58,679 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 22:39:58,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 22:39:58,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:39:58,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 22:39:58,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 22:39:58,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 22:39:58,680 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 22:39:58,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 22:39:58,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 22:39:58,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 22:39:58,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 22:39:58,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 22:39:58,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 22:39:58,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7b742cc0d0eaef445a8f90399cbd092d4cb10efae03dcad0c8e37a0643e7fd6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-22 22:39:58,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 22:39:58,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 22:39:58,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 22:39:58,882 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 22:39:58,882 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 22:39:58,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-22 22:39:59,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 22:40:00,257 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 22:40:00,257 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-22 22:40:00,268 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3112f53c1/ab43ad8d36d64503a9eacdf516c0392e/FLAGacb5bfa94 [2023-11-22 22:40:00,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3112f53c1/ab43ad8d36d64503a9eacdf516c0392e [2023-11-22 22:40:00,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 22:40:00,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 22:40:00,294 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 22:40:00,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 22:40:00,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 22:40:00,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:00,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@108146c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00, skipping insertion in model container [2023-11-22 22:40:00,299 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:00,370 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 22:40:00,507 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2023-11-22 22:40:00,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:40:00,792 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 22:40:00,801 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-array/btor2c-lazyMod.safe_linked_list_fifo_n2d4.c[1266,1279] [2023-11-22 22:40:00,922 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 22:40:00,934 INFO L206 MainTranslator]: Completed translation [2023-11-22 22:40:00,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00 WrapperNode [2023-11-22 22:40:00,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 22:40:00,936 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 22:40:00,936 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 22:40:00,936 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 22:40:00,941 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,009 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,442 INFO L138 Inliner]: procedures = 18, calls = 107, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4288 [2023-11-22 22:40:01,442 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 22:40:01,442 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 22:40:01,443 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 22:40:01,443 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 22:40:01,464 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,464 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,539 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,654 INFO L189 HeapSplitter]: Split 63 memory accesses to 16 slices as follows [2, 2, 17, 2, 2, 6, 2, 2, 14, 2, 2, 2, 2, 2, 2, 2] [2023-11-22 22:40:01,655 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,655 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,783 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,804 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,821 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,884 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 22:40:01,885 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 22:40:01,885 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 22:40:01,885 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 22:40:01,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (1/1) ... [2023-11-22 22:40:01,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 22:40:01,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:01,912 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 22:40:01,939 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 22:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 22:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-22 22:40:01,961 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-22 22:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-22 22:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-22 22:40:01,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-22 22:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-22 22:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-22 22:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-22 22:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-22 22:40:01,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-22 22:40:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-22 22:40:01,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-22 22:40:01,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-22 22:40:01,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-22 22:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-22 22:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2023-11-22 22:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2023-11-22 22:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2023-11-22 22:40:01,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2023-11-22 22:40:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2023-11-22 22:40:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2023-11-22 22:40:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#13 [2023-11-22 22:40:01,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#14 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#15 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 22:40:01,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-22 22:40:01,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2023-11-22 22:40:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#13 [2023-11-22 22:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#14 [2023-11-22 22:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#15 [2023-11-22 22:40:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 22:40:02,240 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 22:40:02,242 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 22:40:04,007 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 22:40:04,063 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 22:40:04,064 INFO L309 CfgBuilder]: Removed 19 assume(true) statements. [2023-11-22 22:40:04,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:40:04 BoogieIcfgContainer [2023-11-22 22:40:04,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 22:40:04,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 22:40:04,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 22:40:04,068 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 22:40:04,068 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:40:00" (1/3) ... [2023-11-22 22:40:04,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e0b83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:40:04, skipping insertion in model container [2023-11-22 22:40:04,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:40:00" (2/3) ... [2023-11-22 22:40:04,069 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e0b83f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:40:04, skipping insertion in model container [2023-11-22 22:40:04,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:40:04" (3/3) ... [2023-11-22 22:40:04,070 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.safe_linked_list_fifo_n2d4.c [2023-11-22 22:40:04,082 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 22:40:04,082 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 22:40:04,130 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 22:40:04,134 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;@269e9349, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 22:40:04,135 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 22:40:04,140 INFO L276 IsEmpty]: Start isEmpty. Operand has 861 states, 853 states have (on average 1.6752637749120751) internal successors, (1429), 854 states have internal predecessors, (1429), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 22:40:04,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-22 22:40:04,154 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:04,154 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:04,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:04,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:04,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1183569807, now seen corresponding path program 1 times [2023-11-22 22:40:04,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:04,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072899004] [2023-11-22 22:40:04,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:04,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:04,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-22 22:40:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-22 22:40:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-22 22:40:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-22 22:40:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-22 22:40:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:04,815 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 22:40:04,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:04,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072899004] [2023-11-22 22:40:04,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072899004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:04,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:04,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 22:40:04,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269407579] [2023-11-22 22:40:04,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:04,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-22 22:40:04,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:04,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-22 22:40:04,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:40:04,852 INFO L87 Difference]: Start difference. First operand has 861 states, 853 states have (on average 1.6752637749120751) internal successors, (1429), 854 states have internal predecessors, (1429), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:04,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:04,930 INFO L93 Difference]: Finished difference Result 1715 states and 2873 transitions. [2023-11-22 22:40:04,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-22 22:40:04,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 334 [2023-11-22 22:40:04,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:04,943 INFO L225 Difference]: With dead ends: 1715 [2023-11-22 22:40:04,943 INFO L226 Difference]: Without dead ends: 859 [2023-11-22 22:40:04,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-22 22:40:04,950 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1396 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:04,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1396 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:40:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2023-11-22 22:40:05,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 859. [2023-11-22 22:40:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 852 states have (on average 1.6502347417840375) internal successors, (1406), 852 states have internal predecessors, (1406), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 22:40:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1416 transitions. [2023-11-22 22:40:05,007 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1416 transitions. Word has length 334 [2023-11-22 22:40:05,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:05,008 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1416 transitions. [2023-11-22 22:40:05,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 156.0) internal successors, (312), 2 states have internal predecessors, (312), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:05,009 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1416 transitions. [2023-11-22 22:40:05,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-22 22:40:05,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:05,013 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:05,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 22:40:05,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:05,014 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:05,014 INFO L85 PathProgramCache]: Analyzing trace with hash 739740613, now seen corresponding path program 1 times [2023-11-22 22:40:05,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:05,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427298228] [2023-11-22 22:40:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:05,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2023-11-22 22:40:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-22 22:40:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2023-11-22 22:40:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-22 22:40:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2023-11-22 22:40:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:05,484 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 22:40:05,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:05,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427298228] [2023-11-22 22:40:05,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427298228] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:05,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:40:05,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:40:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751670217] [2023-11-22 22:40:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:05,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:05,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:05,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:05,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:40:05,497 INFO L87 Difference]: Start difference. First operand 859 states and 1416 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:05,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:05,596 INFO L93 Difference]: Finished difference Result 1717 states and 2831 transitions. [2023-11-22 22:40:05,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:05,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 334 [2023-11-22 22:40:05,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:05,599 INFO L225 Difference]: With dead ends: 1717 [2023-11-22 22:40:05,599 INFO L226 Difference]: Without dead ends: 863 [2023-11-22 22:40:05,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:40:05,632 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2788 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:05,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2788 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:40:05,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2023-11-22 22:40:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 860. [2023-11-22 22:40:05,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 853 states have (on average 1.64947245017585) internal successors, (1407), 853 states have internal predecessors, (1407), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 22:40:05,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1417 transitions. [2023-11-22 22:40:05,689 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1417 transitions. Word has length 334 [2023-11-22 22:40:05,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:05,690 INFO L495 AbstractCegarLoop]: Abstraction has 860 states and 1417 transitions. [2023-11-22 22:40:05,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:05,690 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1417 transitions. [2023-11-22 22:40:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2023-11-22 22:40:05,695 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:05,695 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:05,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 22:40:05,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:05,696 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:05,696 INFO L85 PathProgramCache]: Analyzing trace with hash 291099465, now seen corresponding path program 1 times [2023-11-22 22:40:05,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:05,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053397525] [2023-11-22 22:40:05,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:05,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2023-11-22 22:40:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2023-11-22 22:40:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:40:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:40:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2023-11-22 22:40:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 22:40:06,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:06,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053397525] [2023-11-22 22:40:06,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053397525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:06,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92969546] [2023-11-22 22:40:06,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:06,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:06,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:06,326 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 22:40:06,352 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 22:40:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:06,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1274 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:40:06,819 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-22 22:40:06,860 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:06,893 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:06,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92969546] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:06,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:06,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 6 [2023-11-22 22:40:06,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653938918] [2023-11-22 22:40:06,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:06,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:06,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:06,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:06,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:06,896 INFO L87 Difference]: Start difference. First operand 860 states and 1417 transitions. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:06,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:06,959 INFO L93 Difference]: Finished difference Result 1579 states and 2601 transitions. [2023-11-22 22:40:06,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:06,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 337 [2023-11-22 22:40:06,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:06,963 INFO L225 Difference]: With dead ends: 1579 [2023-11-22 22:40:06,963 INFO L226 Difference]: Without dead ends: 861 [2023-11-22 22:40:06,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 685 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:40:06,965 INFO L413 NwaCegarLoop]: 1395 mSDtfsCounter, 5 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:06,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2783 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:40:06,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-22 22:40:07,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 861. [2023-11-22 22:40:07,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 854 states have (on average 1.648711943793911) internal successors, (1408), 854 states have internal predecessors, (1408), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-22 22:40:07,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1418 transitions. [2023-11-22 22:40:07,016 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1418 transitions. Word has length 337 [2023-11-22 22:40:07,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:07,018 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1418 transitions. [2023-11-22 22:40:07,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:07,019 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1418 transitions. [2023-11-22 22:40:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2023-11-22 22:40:07,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:07,022 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:07,040 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 22:40:07,237 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 22:40:07,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:07,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:07,238 INFO L85 PathProgramCache]: Analyzing trace with hash 534669315, now seen corresponding path program 1 times [2023-11-22 22:40:07,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:07,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348886300] [2023-11-22 22:40:07,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:07,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-22 22:40:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-22 22:40:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-22 22:40:07,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-22 22:40:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-22 22:40:07,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348886300] [2023-11-22 22:40:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348886300] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275379267] [2023-11-22 22:40:07,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:07,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:07,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:07,619 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 22:40:07,660 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 22:40:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:08,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-22 22:40:08,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:08,174 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:09,206 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:09,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275379267] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:09,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:09,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3] total 13 [2023-11-22 22:40:09,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707785987] [2023-11-22 22:40:09,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:09,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:40:09,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:09,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:40:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:40:09,209 INFO L87 Difference]: Start difference. First operand 861 states and 1418 transitions. Second operand has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:12,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:12,581 INFO L93 Difference]: Finished difference Result 4127 states and 6718 transitions. [2023-11-22 22:40:12,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-22 22:40:12,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 340 [2023-11-22 22:40:12,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:12,591 INFO L225 Difference]: With dead ends: 4127 [2023-11-22 22:40:12,591 INFO L226 Difference]: Without dead ends: 3608 [2023-11-22 22:40:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2023-11-22 22:40:12,593 INFO L413 NwaCegarLoop]: 2368 mSDtfsCounter, 14971 mSDsluCounter, 5585 mSDsCounter, 0 mSdLazyCounter, 4139 mSolverCounterSat, 405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14976 SdHoareTripleChecker+Valid, 7953 SdHoareTripleChecker+Invalid, 4544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 405 IncrementalHoareTripleChecker+Valid, 4139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:12,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14976 Valid, 7953 Invalid, 4544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [405 Valid, 4139 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 22:40:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3608 states. [2023-11-22 22:40:12,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3608 to 940. [2023-11-22 22:40:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 929 states have (on average 1.643702906350915) internal successors, (1527), 929 states have internal predecessors, (1527), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-22 22:40:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1545 transitions. [2023-11-22 22:40:12,646 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1545 transitions. Word has length 340 [2023-11-22 22:40:12,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:12,647 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1545 transitions. [2023-11-22 22:40:12,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 35.333333333333336) internal successors, (318), 9 states have internal predecessors, (318), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1545 transitions. [2023-11-22 22:40:12,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-22 22:40:12,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:12,650 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:12,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-22 22:40:12,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-22 22:40:12,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:12,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:12,881 INFO L85 PathProgramCache]: Analyzing trace with hash -2143737229, now seen corresponding path program 1 times [2023-11-22 22:40:12,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:12,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493986874] [2023-11-22 22:40:12,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:12,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2023-11-22 22:40:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2023-11-22 22:40:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2023-11-22 22:40:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2023-11-22 22:40:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-22 22:40:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,180 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:13,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493986874] [2023-11-22 22:40:13,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493986874] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:13,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963564516] [2023-11-22 22:40:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:13,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:13,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:13,197 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 22:40:13,211 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 22:40:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:13,655 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 22:40:13,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:13,698 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963564516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:40:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674669903] [2023-11-22 22:40:13,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:13,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:13,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:13,700 INFO L87 Difference]: Start difference. First operand 940 states and 1545 transitions. Second operand has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:14,901 INFO L93 Difference]: Finished difference Result 2652 states and 4336 transitions. [2023-11-22 22:40:14,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:40:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 341 [2023-11-22 22:40:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:14,908 INFO L225 Difference]: With dead ends: 2652 [2023-11-22 22:40:14,908 INFO L226 Difference]: Without dead ends: 2056 [2023-11-22 22:40:14,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:40:14,910 INFO L413 NwaCegarLoop]: 2641 mSDtfsCounter, 1501 mSDsluCounter, 7533 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 10174 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:14,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 10174 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 22:40:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-11-22 22:40:14,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 962. [2023-11-22 22:40:14,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 951 states have (on average 1.640378548895899) internal successors, (1560), 951 states have internal predecessors, (1560), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-22 22:40:14,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1578 transitions. [2023-11-22 22:40:14,940 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1578 transitions. Word has length 341 [2023-11-22 22:40:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:14,940 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1578 transitions. [2023-11-22 22:40:14,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 53.166666666666664) internal successors, (319), 6 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1578 transitions. [2023-11-22 22:40:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-22 22:40:14,943 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:14,944 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:14,970 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-22 22:40:15,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:15,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:15,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:15,158 INFO L85 PathProgramCache]: Analyzing trace with hash 456098947, now seen corresponding path program 1 times [2023-11-22 22:40:15,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:15,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28044365] [2023-11-22 22:40:15,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:15,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-22 22:40:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-22 22:40:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-22 22:40:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-22 22:40:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-22 22:40:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:15,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28044365] [2023-11-22 22:40:15,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28044365] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:15,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453822841] [2023-11-22 22:40:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:15,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:15,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:15,540 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 22:40:15,567 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 22:40:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:15,970 INFO L262 TraceCheckSpWp]: Trace formula consists of 1287 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-22 22:40:15,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:16,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:16,397 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:16,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453822841] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:16,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:16,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4, 3] total 12 [2023-11-22 22:40:16,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811389832] [2023-11-22 22:40:16,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:40:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:40:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:16,402 INFO L87 Difference]: Start difference. First operand 962 states and 1578 transitions. Second operand has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:16,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:16,514 INFO L93 Difference]: Finished difference Result 1750 states and 2862 transitions. [2023-11-22 22:40:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:40:16,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 341 [2023-11-22 22:40:16,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:16,518 INFO L225 Difference]: With dead ends: 1750 [2023-11-22 22:40:16,518 INFO L226 Difference]: Without dead ends: 1132 [2023-11-22 22:40:16,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 683 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:40:16,520 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 6466 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6466 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:16,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6466 Valid, 2256 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:40:16,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2023-11-22 22:40:16,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 962. [2023-11-22 22:40:16,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 951 states have (on average 1.6393270241850684) internal successors, (1559), 951 states have internal predecessors, (1559), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-22 22:40:16,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1577 transitions. [2023-11-22 22:40:16,544 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1577 transitions. Word has length 341 [2023-11-22 22:40:16,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:16,545 INFO L495 AbstractCegarLoop]: Abstraction has 962 states and 1577 transitions. [2023-11-22 22:40:16,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 39.875) internal successors, (319), 8 states have internal predecessors, (319), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:16,545 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1577 transitions. [2023-11-22 22:40:16,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2023-11-22 22:40:16,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:16,547 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:16,563 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 22:40:16,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:16,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:16,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash 61732161, now seen corresponding path program 1 times [2023-11-22 22:40:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:16,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110244828] [2023-11-22 22:40:16,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:16,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:16,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2023-11-22 22:40:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2023-11-22 22:40:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2023-11-22 22:40:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2023-11-22 22:40:17,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-22 22:40:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,141 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:17,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110244828] [2023-11-22 22:40:17,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110244828] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:17,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678148547] [2023-11-22 22:40:17,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:17,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:17,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:17,143 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 22:40:17,169 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 22:40:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:17,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 22:40:17,641 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:17,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:17,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678148547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:17,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:17,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-22 22:40:17,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716464586] [2023-11-22 22:40:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:17,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:40:17,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:40:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:40:17,657 INFO L87 Difference]: Start difference. First operand 962 states and 1577 transitions. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:17,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:17,724 INFO L93 Difference]: Finished difference Result 1917 states and 3144 transitions. [2023-11-22 22:40:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:40:17,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 341 [2023-11-22 22:40:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:17,728 INFO L225 Difference]: With dead ends: 1917 [2023-11-22 22:40:17,728 INFO L226 Difference]: Without dead ends: 966 [2023-11-22 22:40:17,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:40:17,730 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 5 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:17,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2785 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:40:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2023-11-22 22:40:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 963. [2023-11-22 22:40:17,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 952 states have (on average 1.638655462184874) internal successors, (1560), 952 states have internal predecessors, (1560), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-22 22:40:17,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1578 transitions. [2023-11-22 22:40:17,760 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1578 transitions. Word has length 341 [2023-11-22 22:40:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:17,760 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1578 transitions. [2023-11-22 22:40:17,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:17,761 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1578 transitions. [2023-11-22 22:40:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2023-11-22 22:40:17,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:17,764 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:17,777 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 22:40:17,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:17,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:17,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:17,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1766144644, now seen corresponding path program 1 times [2023-11-22 22:40:17,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:17,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4969017] [2023-11-22 22:40:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:17,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-11-22 22:40:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2023-11-22 22:40:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2023-11-22 22:40:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2023-11-22 22:40:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:40:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,300 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:18,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4969017] [2023-11-22 22:40:18,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4969017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:18,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743977451] [2023-11-22 22:40:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:18,302 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 22:40:18,325 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 22:40:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:18,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-22 22:40:18,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:18,862 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:18,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:19,701 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:19,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743977451] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:19,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:19,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 8] total 12 [2023-11-22 22:40:19,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810845428] [2023-11-22 22:40:19,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:19,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:40:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:40:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:19,705 INFO L87 Difference]: Start difference. First operand 963 states and 1578 transitions. Second operand has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:40:21,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:21,029 INFO L93 Difference]: Finished difference Result 2606 states and 4270 transitions. [2023-11-22 22:40:21,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:21,029 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 344 [2023-11-22 22:40:21,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:21,033 INFO L225 Difference]: With dead ends: 2606 [2023-11-22 22:40:21,034 INFO L226 Difference]: Without dead ends: 1511 [2023-11-22 22:40:21,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 700 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:40:21,035 INFO L413 NwaCegarLoop]: 1678 mSDtfsCounter, 5907 mSDsluCounter, 3418 mSDsCounter, 0 mSdLazyCounter, 2324 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5912 SdHoareTripleChecker+Valid, 5096 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:21,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5912 Valid, 5096 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2324 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 22:40:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2023-11-22 22:40:21,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 1428. [2023-11-22 22:40:21,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1416 states have (on average 1.6391242937853108) internal successors, (2321), 1416 states have internal predecessors, (2321), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:21,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2341 transitions. [2023-11-22 22:40:21,094 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2341 transitions. Word has length 344 [2023-11-22 22:40:21,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:21,094 INFO L495 AbstractCegarLoop]: Abstraction has 1428 states and 2341 transitions. [2023-11-22 22:40:21,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 51.583333333333336) internal successors, (619), 12 states have internal predecessors, (619), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-22 22:40:21,094 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2341 transitions. [2023-11-22 22:40:21,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2023-11-22 22:40:21,096 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:21,096 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:21,112 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-22 22:40:21,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:21,310 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:21,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:21,312 INFO L85 PathProgramCache]: Analyzing trace with hash -734031740, now seen corresponding path program 1 times [2023-11-22 22:40:21,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:21,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621321820] [2023-11-22 22:40:21,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:21,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2023-11-22 22:40:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2023-11-22 22:40:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2023-11-22 22:40:21,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2023-11-22 22:40:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2023-11-22 22:40:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:21,618 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-22 22:40:21,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:21,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621321820] [2023-11-22 22:40:21,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621321820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:21,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277502675] [2023-11-22 22:40:21,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:21,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:21,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:21,620 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 22:40:21,679 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 22:40:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 1310 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:40:22,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:22,132 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:22,159 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-22 22:40:22,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277502675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:22,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:22,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 9 [2023-11-22 22:40:22,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188608661] [2023-11-22 22:40:22,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:22,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:40:22,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:22,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:40:22,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:40:22,162 INFO L87 Difference]: Start difference. First operand 1428 states and 2341 transitions. Second operand has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:40:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:22,337 INFO L93 Difference]: Finished difference Result 2865 states and 4700 transitions. [2023-11-22 22:40:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:40:22,338 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 348 [2023-11-22 22:40:22,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:22,348 INFO L225 Difference]: With dead ends: 2865 [2023-11-22 22:40:22,350 INFO L226 Difference]: Without dead ends: 1447 [2023-11-22 22:40:22,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:40:22,354 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 32 mSDsluCounter, 9757 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 11158 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:22,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 11158 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:40:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2023-11-22 22:40:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1444. [2023-11-22 22:40:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1444 states, 1432 states have (on average 1.6375698324022345) internal successors, (2345), 1432 states have internal predecessors, (2345), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2365 transitions. [2023-11-22 22:40:22,391 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2365 transitions. Word has length 348 [2023-11-22 22:40:22,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:22,391 INFO L495 AbstractCegarLoop]: Abstraction has 1444 states and 2365 transitions. [2023-11-22 22:40:22,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.22222222222222) internal successors, (434), 9 states have internal predecessors, (434), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:40:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2365 transitions. [2023-11-22 22:40:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2023-11-22 22:40:22,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:22,393 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:22,423 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 22:40:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:22,609 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:22,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1381246028, now seen corresponding path program 2 times [2023-11-22 22:40:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:22,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223350834] [2023-11-22 22:40:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-22 22:40:22,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-22 22:40:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-22 22:40:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-22 22:40:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-22 22:40:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:22,937 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-22 22:40:22,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223350834] [2023-11-22 22:40:22,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223350834] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:22,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47883400] [2023-11-22 22:40:22,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:40:22,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:22,938 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 22:40:22,965 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 22:40:23,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:23,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:23,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 1051 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-22 22:40:23,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:23,623 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-22 22:40:23,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:23,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47883400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:23,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:23,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2023-11-22 22:40:23,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805185860] [2023-11-22 22:40:23,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:23,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:40:23,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:23,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:40:23,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:40:23,625 INFO L87 Difference]: Start difference. First operand 1444 states and 2365 transitions. Second operand has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:25,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:25,080 INFO L93 Difference]: Finished difference Result 3612 states and 5906 transitions. [2023-11-22 22:40:25,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-22 22:40:25,081 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 360 [2023-11-22 22:40:25,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:25,088 INFO L225 Difference]: With dead ends: 3612 [2023-11-22 22:40:25,088 INFO L226 Difference]: Without dead ends: 2533 [2023-11-22 22:40:25,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:40:25,091 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 2702 mSDsluCounter, 3705 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2707 SdHoareTripleChecker+Valid, 4654 SdHoareTripleChecker+Invalid, 3059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:25,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2707 Valid, 4654 Invalid, 3059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 22:40:25,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2023-11-22 22:40:25,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 1452. [2023-11-22 22:40:25,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1452 states, 1440 states have (on average 1.6340277777777779) internal successors, (2353), 1440 states have internal predecessors, (2353), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2373 transitions. [2023-11-22 22:40:25,135 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2373 transitions. Word has length 360 [2023-11-22 22:40:25,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:25,135 INFO L495 AbstractCegarLoop]: Abstraction has 1452 states and 2373 transitions. [2023-11-22 22:40:25,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:25,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2373 transitions. [2023-11-22 22:40:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2023-11-22 22:40:25,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:25,138 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:25,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-22 22:40:25,351 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,SelfDestructingSolverStorable9 [2023-11-22 22:40:25,352 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:25,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:25,353 INFO L85 PathProgramCache]: Analyzing trace with hash 132772900, now seen corresponding path program 1 times [2023-11-22 22:40:25,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:25,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232636762] [2023-11-22 22:40:25,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:25,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2023-11-22 22:40:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2023-11-22 22:40:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2023-11-22 22:40:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2023-11-22 22:40:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-22 22:40:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-22 22:40:25,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:25,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232636762] [2023-11-22 22:40:25,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232636762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:25,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612042151] [2023-11-22 22:40:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:25,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:25,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:25,673 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 22:40:25,674 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 22:40:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:26,116 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 22:40:26,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:26,138 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-22 22:40:26,138 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 10 proven. 24 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-22 22:40:26,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612042151] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:40:26,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:40:26,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 10] total 15 [2023-11-22 22:40:26,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158808681] [2023-11-22 22:40:26,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:40:26,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 22:40:26,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:26,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 22:40:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:40:26,241 INFO L87 Difference]: Start difference. First operand 1452 states and 2373 transitions. Second operand has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:40:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:26,482 INFO L93 Difference]: Finished difference Result 2897 states and 4737 transitions. [2023-11-22 22:40:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:26,483 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 361 [2023-11-22 22:40:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:26,487 INFO L225 Difference]: With dead ends: 2897 [2023-11-22 22:40:26,487 INFO L226 Difference]: Without dead ends: 1459 [2023-11-22 22:40:26,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 735 GetRequests, 722 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-22 22:40:26,507 INFO L413 NwaCegarLoop]: 1406 mSDtfsCounter, 32 mSDsluCounter, 14000 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15406 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:26,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15406 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:40:26,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-11-22 22:40:26,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1456. [2023-11-22 22:40:26,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1444 states have (on average 1.6336565096952909) internal successors, (2359), 1444 states have internal predecessors, (2359), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:26,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2379 transitions. [2023-11-22 22:40:26,597 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2379 transitions. Word has length 361 [2023-11-22 22:40:26,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:26,600 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 2379 transitions. [2023-11-22 22:40:26,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 23.8) internal successors, (357), 15 states have internal predecessors, (357), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:40:26,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2379 transitions. [2023-11-22 22:40:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-22 22:40:26,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:26,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:26,619 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 22:40:26,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:26,819 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:26,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash 238754336, now seen corresponding path program 2 times [2023-11-22 22:40:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:26,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989587227] [2023-11-22 22:40:26,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:26,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-22 22:40:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-22 22:40:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 22:40:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:27,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:27,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989587227] [2023-11-22 22:40:27,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989587227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:27,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596242094] [2023-11-22 22:40:27,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:40:27,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:27,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:27,121 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 22:40:27,138 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 22:40:27,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:40:27,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:40:27,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 1054 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-22 22:40:27,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:28,156 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-22 22:40:28,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:28,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596242094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:28,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:28,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2023-11-22 22:40:28,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124400943] [2023-11-22 22:40:28,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:28,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:28,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:28,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:28,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:28,159 INFO L87 Difference]: Start difference. First operand 1456 states and 2379 transitions. Second operand has 6 states, 6 states have (on average 54.0) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:29,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:29,548 INFO L93 Difference]: Finished difference Result 3576 states and 5842 transitions. [2023-11-22 22:40:29,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:40:29,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2023-11-22 22:40:29,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:29,555 INFO L225 Difference]: With dead ends: 3576 [2023-11-22 22:40:29,555 INFO L226 Difference]: Without dead ends: 2489 [2023-11-22 22:40:29,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:29,558 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 2092 mSDsluCounter, 3583 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 4979 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:29,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 4979 Invalid, 2863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 22:40:29,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2489 states. [2023-11-22 22:40:29,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2489 to 1480. [2023-11-22 22:40:29,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1468 states have (on average 1.6314713896457766) internal successors, (2395), 1468 states have internal predecessors, (2395), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:29,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2415 transitions. [2023-11-22 22:40:29,597 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2415 transitions. Word has length 364 [2023-11-22 22:40:29,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:29,598 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2415 transitions. [2023-11-22 22:40:29,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.0) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:29,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2415 transitions. [2023-11-22 22:40:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-22 22:40:29,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:29,600 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:29,613 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 22:40:29,813 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,SelfDestructingSolverStorable11 [2023-11-22 22:40:29,814 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:29,814 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1068388062, now seen corresponding path program 1 times [2023-11-22 22:40:29,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617748159] [2023-11-22 22:40:29,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:29,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-22 22:40:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-22 22:40:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 22:40:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:30,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:30,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617748159] [2023-11-22 22:40:30,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617748159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:30,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863920206] [2023-11-22 22:40:30,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:30,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:30,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:30,082 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 22:40:30,083 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 22:40:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:30,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-22 22:40:30,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:30,895 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-22 22:40:30,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:31,166 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-22 22:40:31,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863920206] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:31,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:31,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 7] total 12 [2023-11-22 22:40:31,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683022803] [2023-11-22 22:40:31,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:31,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:31,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:31,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:31,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:40:31,169 INFO L87 Difference]: Start difference. First operand 1480 states and 2415 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:31,908 INFO L93 Difference]: Finished difference Result 2599 states and 4235 transitions. [2023-11-22 22:40:31,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:40:31,909 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2023-11-22 22:40:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:31,914 INFO L225 Difference]: With dead ends: 2599 [2023-11-22 22:40:31,914 INFO L226 Difference]: Without dead ends: 1488 [2023-11-22 22:40:31,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:40:31,917 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 1095 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 2556 SdHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:31,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 2556 Invalid, 1696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 22:40:31,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2023-11-22 22:40:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 1486. [2023-11-22 22:40:31,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1486 states, 1474 states have (on average 1.630257801899593) internal successors, (2403), 1474 states have internal predecessors, (2403), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:31,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1486 states to 1486 states and 2423 transitions. [2023-11-22 22:40:31,974 INFO L78 Accepts]: Start accepts. Automaton has 1486 states and 2423 transitions. Word has length 364 [2023-11-22 22:40:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:31,976 INFO L495 AbstractCegarLoop]: Abstraction has 1486 states and 2423 transitions. [2023-11-22 22:40:31,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1486 states and 2423 transitions. [2023-11-22 22:40:31,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2023-11-22 22:40:31,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:31,980 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:31,994 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 22:40:32,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-22 22:40:32,193 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:32,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:32,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1068328480, now seen corresponding path program 1 times [2023-11-22 22:40:32,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:32,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376406479] [2023-11-22 22:40:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-22 22:40:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-22 22:40:32,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 22:40:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:32,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376406479] [2023-11-22 22:40:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376406479] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920029286] [2023-11-22 22:40:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:32,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:32,465 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 22:40:32,488 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 22:40:32,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:32,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 1365 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-22 22:40:32,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-22 22:40:33,620 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-22 22:40:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920029286] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:33,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:33,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 8] total 14 [2023-11-22 22:40:33,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560937462] [2023-11-22 22:40:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:33,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:40:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:40:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:40:33,686 INFO L87 Difference]: Start difference. First operand 1486 states and 2423 transitions. Second operand has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:33,932 INFO L93 Difference]: Finished difference Result 4843 states and 7883 transitions. [2023-11-22 22:40:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:33,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 364 [2023-11-22 22:40:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:33,942 INFO L225 Difference]: With dead ends: 4843 [2023-11-22 22:40:33,942 INFO L226 Difference]: Without dead ends: 3726 [2023-11-22 22:40:33,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-22 22:40:33,944 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 2495 mSDsluCounter, 5198 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2500 SdHoareTripleChecker+Valid, 6790 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:33,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2500 Valid, 6790 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:40:33,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3726 states. [2023-11-22 22:40:33,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3726 to 1502. [2023-11-22 22:40:34,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1490 states have (on average 1.6288590604026845) internal successors, (2427), 1490 states have internal predecessors, (2427), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-22 22:40:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 2447 transitions. [2023-11-22 22:40:34,002 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 2447 transitions. Word has length 364 [2023-11-22 22:40:34,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:34,003 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 2447 transitions. [2023-11-22 22:40:34,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 64.8) internal successors, (324), 5 states have internal predecessors, (324), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:40:34,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 2447 transitions. [2023-11-22 22:40:34,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-11-22 22:40:34,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:34,006 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:34,034 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 22:40:34,220 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,SelfDestructingSolverStorable13 [2023-11-22 22:40:34,220 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:34,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:34,221 INFO L85 PathProgramCache]: Analyzing trace with hash -990474520, now seen corresponding path program 1 times [2023-11-22 22:40:34,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:34,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8914405] [2023-11-22 22:40:34,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:34,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:34,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2023-11-22 22:40:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2023-11-22 22:40:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2023-11-22 22:40:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:34,520 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:34,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:34,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8914405] [2023-11-22 22:40:34,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8914405] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:34,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068973552] [2023-11-22 22:40:34,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:34,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:34,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:34,537 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 22:40:34,600 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 22:40:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:35,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 22:40:35,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:35,167 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-22 22:40:35,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:40:35,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068973552] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:40:35,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:40:35,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:40:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955814449] [2023-11-22 22:40:35,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:35,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:35,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:35,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:35,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:40:35,170 INFO L87 Difference]: Start difference. First operand 1502 states and 2447 transitions. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:36,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:36,318 INFO L93 Difference]: Finished difference Result 3742 states and 6084 transitions. [2023-11-22 22:40:36,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:40:36,319 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 365 [2023-11-22 22:40:36,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:36,324 INFO L225 Difference]: With dead ends: 3742 [2023-11-22 22:40:36,324 INFO L226 Difference]: Without dead ends: 2609 [2023-11-22 22:40:36,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 372 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:40:36,326 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 2989 mSDsluCounter, 2518 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2997 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 2336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:36,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2997 Valid, 3367 Invalid, 2336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-22 22:40:36,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2609 states. [2023-11-22 22:40:36,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2609 to 1614. [2023-11-22 22:40:36,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1614 states, 1598 states have (on average 1.6214017521902377) internal successors, (2591), 1598 states have internal predecessors, (2591), 14 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-22 22:40:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2619 transitions. [2023-11-22 22:40:36,369 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2619 transitions. Word has length 365 [2023-11-22 22:40:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:36,369 INFO L495 AbstractCegarLoop]: Abstraction has 1614 states and 2619 transitions. [2023-11-22 22:40:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2619 transitions. [2023-11-22 22:40:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-22 22:40:36,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:36,372 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:36,403 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 22:40:36,584 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,SelfDestructingSolverStorable14 [2023-11-22 22:40:36,585 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:36,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1558568068, now seen corresponding path program 1 times [2023-11-22 22:40:36,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:36,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546823507] [2023-11-22 22:40:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:36,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-22 22:40:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-22 22:40:36,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-22 22:40:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:36,805 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:36,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546823507] [2023-11-22 22:40:36,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546823507] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:36,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979118438] [2023-11-22 22:40:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:36,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:36,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:36,822 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 22:40:36,845 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 22:40:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:37,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 1371 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-22 22:40:37,321 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:37,664 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-22 22:40:37,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-22 22:40:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979118438] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:37,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 8] total 14 [2023-11-22 22:40:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256845620] [2023-11-22 22:40:37,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:37,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:40:37,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:37,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:40:37,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:40:37,995 INFO L87 Difference]: Start difference. First operand 1614 states and 2619 transitions. Second operand has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:39,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:40:39,292 INFO L93 Difference]: Finished difference Result 3968 states and 6430 transitions. [2023-11-22 22:40:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:40:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 366 [2023-11-22 22:40:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:40:39,296 INFO L225 Difference]: With dead ends: 3968 [2023-11-22 22:40:39,297 INFO L226 Difference]: Without dead ends: 2723 [2023-11-22 22:40:39,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 749 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-22 22:40:39,298 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 2783 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 2343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:40:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2788 Valid, 3384 Invalid, 2343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 22:40:39,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-11-22 22:40:39,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1728. [2023-11-22 22:40:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1728 states, 1708 states have (on average 1.6153395784543325) internal successors, (2759), 1708 states have internal predecessors, (2759), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 22:40:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 2795 transitions. [2023-11-22 22:40:39,349 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 2795 transitions. Word has length 366 [2023-11-22 22:40:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:40:39,349 INFO L495 AbstractCegarLoop]: Abstraction has 1728 states and 2795 transitions. [2023-11-22 22:40:39,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.333333333333336) internal successors, (326), 6 states have internal predecessors, (326), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:40:39,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 2795 transitions. [2023-11-22 22:40:39,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2023-11-22 22:40:39,351 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:40:39,351 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:39,372 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 22:40:39,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:39,565 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:40:39,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:40:39,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1782459070, now seen corresponding path program 1 times [2023-11-22 22:40:39,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:40:39,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230436244] [2023-11-22 22:40:39,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:39,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:40:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:40:39,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:40:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2023-11-22 22:40:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2023-11-22 22:40:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2023-11-22 22:40:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:40:39,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:40:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230436244] [2023-11-22 22:40:39,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230436244] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:39,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855204453] [2023-11-22 22:40:39,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:40:39,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:40:39,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:40:39,785 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 22:40:39,811 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 22:40:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:40:40,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 1372 conjuncts, 110 conjunts are in the unsatisfiable core [2023-11-22 22:40:40,274 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:40:41,411 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-22 22:40:41,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:40:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-11-22 22:40:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855204453] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:40:42,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:40:42,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [4, 13] total 32 [2023-11-22 22:40:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677932433] [2023-11-22 22:40:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:40:42,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:40:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:40:42,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:40:42,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=796, Unknown=0, NotChecked=0, Total=992 [2023-11-22 22:40:42,089 INFO L87 Difference]: Start difference. First operand 1728 states and 2795 transitions. Second operand has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-22 22:41:01,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:01,656 INFO L93 Difference]: Finished difference Result 37042 states and 59533 transitions. [2023-11-22 22:41:01,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2023-11-22 22:41:01,657 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 366 [2023-11-22 22:41:01,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:01,700 INFO L225 Difference]: With dead ends: 37042 [2023-11-22 22:41:01,700 INFO L226 Difference]: Without dead ends: 35683 [2023-11-22 22:41:01,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 748 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21107 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=7118, Invalid=45552, Unknown=0, NotChecked=0, Total=52670 [2023-11-22 22:41:01,715 INFO L413 NwaCegarLoop]: 5407 mSDtfsCounter, 34578 mSDsluCounter, 38156 mSDsCounter, 0 mSdLazyCounter, 13521 mSolverCounterSat, 745 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34593 SdHoareTripleChecker+Valid, 43563 SdHoareTripleChecker+Invalid, 14266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 13521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:01,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34593 Valid, 43563 Invalid, 14266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [745 Valid, 13521 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2023-11-22 22:41:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35683 states. [2023-11-22 22:41:01,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35683 to 1905. [2023-11-22 22:41:01,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1871 states have (on average 1.6087653661143773) internal successors, (3010), 1871 states have internal predecessors, (3010), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:01,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 3074 transitions. [2023-11-22 22:41:01,924 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 3074 transitions. Word has length 366 [2023-11-22 22:41:01,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:01,925 INFO L495 AbstractCegarLoop]: Abstraction has 1905 states and 3074 transitions. [2023-11-22 22:41:01,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 18.11111111111111) internal successors, (326), 18 states have internal predecessors, (326), 3 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-22 22:41:01,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 3074 transitions. [2023-11-22 22:41:01,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 22:41:01,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:01,927 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:01,941 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 22:41:02,141 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,SelfDestructingSolverStorable16 [2023-11-22 22:41:02,141 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:02,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -2144674914, now seen corresponding path program 1 times [2023-11-22 22:41:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:02,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302407550] [2023-11-22 22:41:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:41:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:41:02,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-22 22:41:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-22 22:41:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-22 22:41:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,342 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:41:02,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:02,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302407550] [2023-11-22 22:41:02,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302407550] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:02,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446842069] [2023-11-22 22:41:02,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:02,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:02,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:02,344 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 22:41:02,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-22 22:41:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:02,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 1375 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-22 22:41:02,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-22 22:41:02,871 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:41:02,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446842069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:02,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:41:02,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:41:02,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592771488] [2023-11-22 22:41:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:41:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:41:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:02,873 INFO L87 Difference]: Start difference. First operand 1905 states and 3074 transitions. Second operand has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:41:03,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:03,071 INFO L93 Difference]: Finished difference Result 4943 states and 7955 transitions. [2023-11-22 22:41:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:41:03,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 367 [2023-11-22 22:41:03,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:03,076 INFO L225 Difference]: With dead ends: 4943 [2023-11-22 22:41:03,076 INFO L226 Difference]: Without dead ends: 3407 [2023-11-22 22:41:03,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:03,078 INFO L413 NwaCegarLoop]: 1509 mSDtfsCounter, 834 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 4405 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:03,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 4405 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:03,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2023-11-22 22:41:03,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 1911. [2023-11-22 22:41:03,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1877 states have (on average 1.6078849227490677) internal successors, (3018), 1877 states have internal predecessors, (3018), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:03,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 3082 transitions. [2023-11-22 22:41:03,229 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 3082 transitions. Word has length 367 [2023-11-22 22:41:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:03,229 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 3082 transitions. [2023-11-22 22:41:03,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-22 22:41:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 3082 transitions. [2023-11-22 22:41:03,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2023-11-22 22:41:03,233 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:03,233 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:03,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:03,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-22 22:41:03,446 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:03,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:03,447 INFO L85 PathProgramCache]: Analyzing trace with hash 2095899484, now seen corresponding path program 1 times [2023-11-22 22:41:03,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:03,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230468142] [2023-11-22 22:41:03,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:03,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:03,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2023-11-22 22:41:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2023-11-22 22:41:03,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 309 [2023-11-22 22:41:03,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2023-11-22 22:41:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2023-11-22 22:41:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:41:03,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230468142] [2023-11-22 22:41:03,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230468142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:03,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561136749] [2023-11-22 22:41:03,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:03,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:03,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:03,664 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:03,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-22 22:41:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 1376 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:41:04,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:04,188 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-22 22:41:04,188 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:04,213 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-22 22:41:04,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561136749] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:04,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:04,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:41:04,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014005141] [2023-11-22 22:41:04,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:04,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:41:04,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:04,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:41:04,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:04,216 INFO L87 Difference]: Start difference. First operand 1911 states and 3082 transitions. Second operand has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:41:04,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:04,383 INFO L93 Difference]: Finished difference Result 3805 states and 6140 transitions. [2023-11-22 22:41:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:41:04,384 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 367 [2023-11-22 22:41:04,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:04,386 INFO L225 Difference]: With dead ends: 3805 [2023-11-22 22:41:04,387 INFO L226 Difference]: Without dead ends: 1918 [2023-11-22 22:41:04,388 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 746 GetRequests, 739 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:04,388 INFO L413 NwaCegarLoop]: 1401 mSDtfsCounter, 28 mSDsluCounter, 5586 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6987 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:04,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 6987 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:04,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1918 states. [2023-11-22 22:41:04,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1918 to 1915. [2023-11-22 22:41:04,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1915 states, 1881 states have (on average 1.6076555023923444) internal successors, (3024), 1881 states have internal predecessors, (3024), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:04,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1915 states to 1915 states and 3088 transitions. [2023-11-22 22:41:04,468 INFO L78 Accepts]: Start accepts. Automaton has 1915 states and 3088 transitions. Word has length 367 [2023-11-22 22:41:04,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:04,468 INFO L495 AbstractCegarLoop]: Abstraction has 1915 states and 3088 transitions. [2023-11-22 22:41:04,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 38.0) internal successors, (342), 9 states have internal predecessors, (342), 1 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2023-11-22 22:41:04,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1915 states and 3088 transitions. [2023-11-22 22:41:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2023-11-22 22:41:04,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:04,471 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:04,502 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:04,685 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:04,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 764750321, now seen corresponding path program 2 times [2023-11-22 22:41:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:04,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50636935] [2023-11-22 22:41:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:04,971 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-22 22:41:04,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:04,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50636935] [2023-11-22 22:41:04,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50636935] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:04,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:41:04,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:41:04,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050368497] [2023-11-22 22:41:04,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:04,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:41:04,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:04,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:41:04,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:41:04,974 INFO L87 Difference]: Start difference. First operand 1915 states and 3088 transitions. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:41:05,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:05,104 INFO L93 Difference]: Finished difference Result 3457 states and 5563 transitions. [2023-11-22 22:41:05,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:41:05,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 370 [2023-11-22 22:41:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:05,107 INFO L225 Difference]: With dead ends: 3457 [2023-11-22 22:41:05,108 INFO L226 Difference]: Without dead ends: 1915 [2023-11-22 22:41:05,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 22:41:05,110 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 1 mSDsluCounter, 2779 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4172 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:05,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4172 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:05,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2023-11-22 22:41:05,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1913. [2023-11-22 22:41:05,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1913 states, 1879 states have (on average 1.6072378924960085) internal successors, (3020), 1879 states have internal predecessors, (3020), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:05,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1913 states to 1913 states and 3084 transitions. [2023-11-22 22:41:05,193 INFO L78 Accepts]: Start accepts. Automaton has 1913 states and 3084 transitions. Word has length 370 [2023-11-22 22:41:05,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:05,193 INFO L495 AbstractCegarLoop]: Abstraction has 1913 states and 3084 transitions. [2023-11-22 22:41:05,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:41:05,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1913 states and 3084 transitions. [2023-11-22 22:41:05,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2023-11-22 22:41:05,195 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:05,196 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:05,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-22 22:41:05,197 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:05,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:05,197 INFO L85 PathProgramCache]: Analyzing trace with hash -499814111, now seen corresponding path program 1 times [2023-11-22 22:41:05,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:05,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954482940] [2023-11-22 22:41:05,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:05,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:06,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2023-11-22 22:41:06,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:06,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954482940] [2023-11-22 22:41:06,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954482940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:06,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:41:06,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:41:06,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758147542] [2023-11-22 22:41:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:06,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:41:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:41:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:06,241 INFO L87 Difference]: Start difference. First operand 1913 states and 3084 transitions. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:41:06,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:06,590 INFO L93 Difference]: Finished difference Result 4730 states and 7590 transitions. [2023-11-22 22:41:06,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:41:06,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 371 [2023-11-22 22:41:06,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:06,595 INFO L225 Difference]: With dead ends: 4730 [2023-11-22 22:41:06,595 INFO L226 Difference]: Without dead ends: 3190 [2023-11-22 22:41:06,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:41:06,597 INFO L413 NwaCegarLoop]: 1564 mSDtfsCounter, 4586 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4591 SdHoareTripleChecker+Valid, 5698 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:06,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4591 Valid, 5698 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:41:06,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2023-11-22 22:41:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 2268. [2023-11-22 22:41:06,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2268 states, 2218 states have (on average 1.5982867448151488) internal successors, (3545), 2218 states have internal predecessors, (3545), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:06,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2268 states to 2268 states and 3641 transitions. [2023-11-22 22:41:06,706 INFO L78 Accepts]: Start accepts. Automaton has 2268 states and 3641 transitions. Word has length 371 [2023-11-22 22:41:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:06,706 INFO L495 AbstractCegarLoop]: Abstraction has 2268 states and 3641 transitions. [2023-11-22 22:41:06,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:41:06,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2268 states and 3641 transitions. [2023-11-22 22:41:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-22 22:41:06,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:06,713 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:06,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-22 22:41:06,714 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:06,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:06,714 INFO L85 PathProgramCache]: Analyzing trace with hash 505328536, now seen corresponding path program 1 times [2023-11-22 22:41:06,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:06,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255301262] [2023-11-22 22:41:06,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:06,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2023-11-22 22:41:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-11-22 22:41:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-22 22:41:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-22 22:41:07,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-22 22:41:07,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:07,933 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-22 22:41:07,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:07,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255301262] [2023-11-22 22:41:07,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255301262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:07,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:41:07,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 22:41:07,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736109337] [2023-11-22 22:41:07,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:07,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:41:07,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:07,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:41:07,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 22:41:07,935 INFO L87 Difference]: Start difference. First operand 2268 states and 3641 transitions. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:08,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:08,245 INFO L93 Difference]: Finished difference Result 5348 states and 8584 transitions. [2023-11-22 22:41:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-22 22:41:08,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 750 [2023-11-22 22:41:08,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:08,250 INFO L225 Difference]: With dead ends: 5348 [2023-11-22 22:41:08,250 INFO L226 Difference]: Without dead ends: 3808 [2023-11-22 22:41:08,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 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 22:41:08,252 INFO L413 NwaCegarLoop]: 1620 mSDtfsCounter, 835 mSDsluCounter, 3011 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4631 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:08,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4631 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:08,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3808 states. [2023-11-22 22:41:08,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3808 to 2272. [2023-11-22 22:41:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2222 states have (on average 1.5972097209720972) internal successors, (3549), 2222 states have internal predecessors, (3549), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3645 transitions. [2023-11-22 22:41:08,361 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3645 transitions. Word has length 750 [2023-11-22 22:41:08,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:08,362 INFO L495 AbstractCegarLoop]: Abstraction has 2272 states and 3645 transitions. [2023-11-22 22:41:08,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:08,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3645 transitions. [2023-11-22 22:41:08,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-11-22 22:41:08,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:08,368 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:08,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-22 22:41:08,368 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:08,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:08,369 INFO L85 PathProgramCache]: Analyzing trace with hash 31414550, now seen corresponding path program 1 times [2023-11-22 22:41:08,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:08,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819139566] [2023-11-22 22:41:08,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:08,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:09,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:09,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 660 [2023-11-22 22:41:09,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-11-22 22:41:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-22 22:41:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-22 22:41:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-22 22:41:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-22 22:41:09,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:09,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819139566] [2023-11-22 22:41:09,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819139566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:09,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:41:09,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:41:09,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944793700] [2023-11-22 22:41:09,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:09,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:41:09,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:41:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:41:09,305 INFO L87 Difference]: Start difference. First operand 2272 states and 3645 transitions. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:10,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:10,149 INFO L93 Difference]: Finished difference Result 3816 states and 6120 transitions. [2023-11-22 22:41:10,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:41:10,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 750 [2023-11-22 22:41:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:10,153 INFO L225 Difference]: With dead ends: 3816 [2023-11-22 22:41:10,154 INFO L226 Difference]: Without dead ends: 2272 [2023-11-22 22:41:10,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:10,157 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 2351 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2351 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:10,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2351 Valid, 1676 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 22:41:10,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2272 states. [2023-11-22 22:41:10,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2272 to 2272. [2023-11-22 22:41:10,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2272 states, 2222 states have (on average 1.5963096309630964) internal successors, (3547), 2222 states have internal predecessors, (3547), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:10,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2272 states to 2272 states and 3643 transitions. [2023-11-22 22:41:10,274 INFO L78 Accepts]: Start accepts. Automaton has 2272 states and 3643 transitions. Word has length 750 [2023-11-22 22:41:10,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:10,274 INFO L495 AbstractCegarLoop]: Abstraction has 2272 states and 3643 transitions. [2023-11-22 22:41:10,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:10,275 INFO L276 IsEmpty]: Start isEmpty. Operand 2272 states and 3643 transitions. [2023-11-22 22:41:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2023-11-22 22:41:10,283 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:10,283 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:10,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-22 22:41:10,284 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:10,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2006836071, now seen corresponding path program 1 times [2023-11-22 22:41:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:10,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310886393] [2023-11-22 22:41:10,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:11,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2023-11-22 22:41:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2023-11-22 22:41:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-22 22:41:11,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-22 22:41:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-22 22:41:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:11,011 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-22 22:41:11,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:11,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310886393] [2023-11-22 22:41:11,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310886393] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:11,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:41:11,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-22 22:41:11,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293405981] [2023-11-22 22:41:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:11,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:11,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:11,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:41:11,015 INFO L87 Difference]: Start difference. First operand 2272 states and 3643 transitions. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:11,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:11,173 INFO L93 Difference]: Finished difference Result 3818 states and 6120 transitions. [2023-11-22 22:41:11,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 751 [2023-11-22 22:41:11,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:11,177 INFO L225 Difference]: With dead ends: 3818 [2023-11-22 22:41:11,177 INFO L226 Difference]: Without dead ends: 2274 [2023-11-22 22:41:11,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 22:41:11,180 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 0 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:11,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2785 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:11,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-11-22 22:41:11,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2274. [2023-11-22 22:41:11,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2224 states have (on average 1.595773381294964) internal successors, (3549), 2224 states have internal predecessors, (3549), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3645 transitions. [2023-11-22 22:41:11,295 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3645 transitions. Word has length 751 [2023-11-22 22:41:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:11,295 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3645 transitions. [2023-11-22 22:41:11,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:11,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3645 transitions. [2023-11-22 22:41:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-11-22 22:41:11,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:11,303 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:11,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-22 22:41:11,303 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:11,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:11,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1846462196, now seen corresponding path program 1 times [2023-11-22 22:41:11,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:11,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780244895] [2023-11-22 22:41:11,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:11,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:12,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2023-11-22 22:41:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-22 22:41:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-22 22:41:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-22 22:41:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-22 22:41:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-22 22:41:12,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780244895] [2023-11-22 22:41:12,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780244895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:12,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169390391] [2023-11-22 22:41:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:12,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:12,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:12,056 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:12,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-22 22:41:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:12,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 4015 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:41:12,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:13,852 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-22 22:41:13,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:41:13,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169390391] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:13,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:41:13,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:41:13,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389449779] [2023-11-22 22:41:13,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:13,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:41:13,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:13,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:41:13,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:13,869 INFO L87 Difference]: Start difference. First operand 2274 states and 3645 transitions. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:14,689 INFO L93 Difference]: Finished difference Result 3820 states and 6120 transitions. [2023-11-22 22:41:14,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:41:14,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 752 [2023-11-22 22:41:14,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:14,692 INFO L225 Difference]: With dead ends: 3820 [2023-11-22 22:41:14,693 INFO L226 Difference]: Without dead ends: 2274 [2023-11-22 22:41:14,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 771 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:14,695 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 1057 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1057 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:14,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1057 Valid, 1676 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-22 22:41:14,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2023-11-22 22:41:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2274. [2023-11-22 22:41:14,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 2224 states have (on average 1.5948741007194245) internal successors, (3547), 2224 states have internal predecessors, (3547), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:14,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3643 transitions. [2023-11-22 22:41:14,811 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3643 transitions. Word has length 752 [2023-11-22 22:41:14,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:14,811 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3643 transitions. [2023-11-22 22:41:14,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:14,811 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3643 transitions. [2023-11-22 22:41:14,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2023-11-22 22:41:14,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:14,818 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:14,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:15,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:15,039 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:15,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:15,040 INFO L85 PathProgramCache]: Analyzing trace with hash -237631666, now seen corresponding path program 1 times [2023-11-22 22:41:15,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:15,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336990032] [2023-11-22 22:41:15,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:15,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:15,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 662 [2023-11-22 22:41:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-22 22:41:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-22 22:41:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-22 22:41:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-22 22:41:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:15,754 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2023-11-22 22:41:15,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:15,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336990032] [2023-11-22 22:41:15,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336990032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:15,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081002520] [2023-11-22 22:41:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:15,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:15,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:15,774 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:15,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-22 22:41:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:16,819 INFO L262 TraceCheckSpWp]: Trace formula consists of 4014 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:41:16,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2023-11-22 22:41:16,851 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:16,884 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-22 22:41:16,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1081002520] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:16,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:16,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:16,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109752701] [2023-11-22 22:41:16,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:16,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:16,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:16,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:16,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:16,887 INFO L87 Difference]: Start difference. First operand 2274 states and 3643 transitions. Second operand has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:17,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:17,077 INFO L93 Difference]: Finished difference Result 3822 states and 6120 transitions. [2023-11-22 22:41:17,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:17,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 752 [2023-11-22 22:41:17,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:17,081 INFO L225 Difference]: With dead ends: 3822 [2023-11-22 22:41:17,081 INFO L226 Difference]: Without dead ends: 2276 [2023-11-22 22:41:17,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1526 GetRequests, 1521 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:17,083 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:17,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:17,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2276 states. [2023-11-22 22:41:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2276 to 2276. [2023-11-22 22:41:17,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2226 states have (on average 1.5943396226415094) internal successors, (3549), 2226 states have internal predecessors, (3549), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:17,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 3645 transitions. [2023-11-22 22:41:17,225 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 3645 transitions. Word has length 752 [2023-11-22 22:41:17,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:17,225 INFO L495 AbstractCegarLoop]: Abstraction has 2276 states and 3645 transitions. [2023-11-22 22:41:17,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:17,226 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 3645 transitions. [2023-11-22 22:41:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 754 [2023-11-22 22:41:17,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:17,232 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:17,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-22 22:41:17,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:17,449 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:17,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1737248409, now seen corresponding path program 1 times [2023-11-22 22:41:17,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:17,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820370289] [2023-11-22 22:41:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:17,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 663 [2023-11-22 22:41:18,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2023-11-22 22:41:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-22 22:41:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-22 22:41:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-22 22:41:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-11-22 22:41:18,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820370289] [2023-11-22 22:41:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820370289] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812720213] [2023-11-22 22:41:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:18,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:18,138 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:18,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-22 22:41:19,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:19,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 4021 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:41:19,088 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-22 22:41:19,104 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:19,132 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 22:41:19,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812720213] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:19,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:19,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:19,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128805418] [2023-11-22 22:41:19,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:19,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:19,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:19,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:19,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:19,134 INFO L87 Difference]: Start difference. First operand 2276 states and 3645 transitions. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:19,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:19,285 INFO L93 Difference]: Finished difference Result 3826 states and 6124 transitions. [2023-11-22 22:41:19,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:19,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 753 [2023-11-22 22:41:19,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:19,289 INFO L225 Difference]: With dead ends: 3826 [2023-11-22 22:41:19,289 INFO L226 Difference]: Without dead ends: 2278 [2023-11-22 22:41:19,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1528 GetRequests, 1523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:19,291 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:19,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:19,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2023-11-22 22:41:19,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2278. [2023-11-22 22:41:19,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 2228 states have (on average 1.593806104129264) internal successors, (3551), 2228 states have internal predecessors, (3551), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3647 transitions. [2023-11-22 22:41:19,459 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3647 transitions. Word has length 753 [2023-11-22 22:41:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:19,460 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3647 transitions. [2023-11-22 22:41:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3647 transitions. [2023-11-22 22:41:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2023-11-22 22:41:19,466 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:19,467 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:19,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-22 22:41:19,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-22 22:41:19,704 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:19,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:19,704 INFO L85 PathProgramCache]: Analyzing trace with hash -534445391, now seen corresponding path program 1 times [2023-11-22 22:41:19,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:19,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780247125] [2023-11-22 22:41:19,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:19,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:19,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:20,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 664 [2023-11-22 22:41:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-22 22:41:20,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-22 22:41:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-22 22:41:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-22 22:41:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-22 22:41:20,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:20,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780247125] [2023-11-22 22:41:20,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780247125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:20,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189015852] [2023-11-22 22:41:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:20,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:20,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:20,435 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:20,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-22 22:41:21,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:21,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 4028 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:41:21,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-22 22:41:21,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-22 22:41:21,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189015852] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:21,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:21,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:21,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331081944] [2023-11-22 22:41:21,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:21,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:21,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:21,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:21,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:21,417 INFO L87 Difference]: Start difference. First operand 2278 states and 3647 transitions. Second operand has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:21,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:21,568 INFO L93 Difference]: Finished difference Result 3830 states and 6128 transitions. [2023-11-22 22:41:21,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:21,569 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 754 [2023-11-22 22:41:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:21,571 INFO L225 Difference]: With dead ends: 3830 [2023-11-22 22:41:21,571 INFO L226 Difference]: Without dead ends: 2280 [2023-11-22 22:41:21,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1530 GetRequests, 1525 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:21,573 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:21,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:21,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2023-11-22 22:41:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2280. [2023-11-22 22:41:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 2230 states have (on average 1.5932735426008968) internal successors, (3553), 2230 states have internal predecessors, (3553), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3649 transitions. [2023-11-22 22:41:21,694 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3649 transitions. Word has length 754 [2023-11-22 22:41:21,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:21,695 INFO L495 AbstractCegarLoop]: Abstraction has 2280 states and 3649 transitions. [2023-11-22 22:41:21,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.66666666666666) internal successors, (686), 3 states have internal predecessors, (686), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3649 transitions. [2023-11-22 22:41:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2023-11-22 22:41:21,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:21,702 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:21,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:21,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-22 22:41:21,921 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:21,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:21,925 INFO L85 PathProgramCache]: Analyzing trace with hash -524840803, now seen corresponding path program 1 times [2023-11-22 22:41:21,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:21,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468402660] [2023-11-22 22:41:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:21,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:22,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:22,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:22,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2023-11-22 22:41:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2023-11-22 22:41:22,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-22 22:41:22,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-22 22:41:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-22 22:41:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2023-11-22 22:41:22,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468402660] [2023-11-22 22:41:22,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468402660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:22,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953842321] [2023-11-22 22:41:22,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:22,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:22,628 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:22,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-22 22:41:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:23,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 4035 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:41:23,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-22 22:41:23,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-22 22:41:23,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953842321] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:23,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:23,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785436381] [2023-11-22 22:41:23,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:23,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:23,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:23,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:23,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:23,599 INFO L87 Difference]: Start difference. First operand 2280 states and 3649 transitions. Second operand has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:23,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:23,753 INFO L93 Difference]: Finished difference Result 3834 states and 6132 transitions. [2023-11-22 22:41:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:23,754 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 755 [2023-11-22 22:41:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:23,757 INFO L225 Difference]: With dead ends: 3834 [2023-11-22 22:41:23,757 INFO L226 Difference]: Without dead ends: 2282 [2023-11-22 22:41:23,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1532 GetRequests, 1527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:23,759 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:23,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:23,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-11-22 22:41:23,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2282. [2023-11-22 22:41:23,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2282 states, 2232 states have (on average 1.592741935483871) internal successors, (3555), 2232 states have internal predecessors, (3555), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:23,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3651 transitions. [2023-11-22 22:41:23,940 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3651 transitions. Word has length 755 [2023-11-22 22:41:23,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:23,941 INFO L495 AbstractCegarLoop]: Abstraction has 2282 states and 3651 transitions. [2023-11-22 22:41:23,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:23,941 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3651 transitions. [2023-11-22 22:41:23,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-11-22 22:41:23,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:23,947 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:23,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-22 22:41:24,165 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:24,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1638962323, now seen corresponding path program 1 times [2023-11-22 22:41:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:24,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005060023] [2023-11-22 22:41:24,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:24,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 666 [2023-11-22 22:41:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2023-11-22 22:41:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-22 22:41:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-22 22:41:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:41:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2023-11-22 22:41:24,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005060023] [2023-11-22 22:41:24,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005060023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:24,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320140499] [2023-11-22 22:41:24,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:24,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:24,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:24,883 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:24,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-22 22:41:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:25,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 4042 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:25,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2023-11-22 22:41:25,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:25,806 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-22 22:41:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320140499] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:25,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:25,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:25,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280881135] [2023-11-22 22:41:25,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:25,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:25,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:25,810 INFO L87 Difference]: Start difference. First operand 2282 states and 3651 transitions. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:25,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:25,958 INFO L93 Difference]: Finished difference Result 3838 states and 6136 transitions. [2023-11-22 22:41:25,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:25,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 756 [2023-11-22 22:41:25,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:25,980 INFO L225 Difference]: With dead ends: 3838 [2023-11-22 22:41:25,980 INFO L226 Difference]: Without dead ends: 2284 [2023-11-22 22:41:25,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1534 GetRequests, 1529 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:25,987 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:25,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2023-11-22 22:41:26,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2284. [2023-11-22 22:41:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 2234 states have (on average 1.5922112802148611) internal successors, (3557), 2234 states have internal predecessors, (3557), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 3653 transitions. [2023-11-22 22:41:26,114 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 3653 transitions. Word has length 756 [2023-11-22 22:41:26,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:26,114 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 3653 transitions. [2023-11-22 22:41:26,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:26,115 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 3653 transitions. [2023-11-22 22:41:26,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 758 [2023-11-22 22:41:26,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:26,121 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:26,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-22 22:41:26,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:26,332 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:26,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:26,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1206270055, now seen corresponding path program 1 times [2023-11-22 22:41:26,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:26,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588255052] [2023-11-22 22:41:26,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:26,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2023-11-22 22:41:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-22 22:41:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-22 22:41:26,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-22 22:41:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-22 22:41:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:26,992 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2023-11-22 22:41:26,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588255052] [2023-11-22 22:41:26,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588255052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:26,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444753711] [2023-11-22 22:41:26,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:26,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:26,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:26,993 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:26,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-22 22:41:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:27,936 INFO L262 TraceCheckSpWp]: Trace formula consists of 4049 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:27,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2023-11-22 22:41:27,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:27,992 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-22 22:41:27,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444753711] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:27,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:27,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:27,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638645294] [2023-11-22 22:41:27,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:27,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:27,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:27,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:27,997 INFO L87 Difference]: Start difference. First operand 2284 states and 3653 transitions. Second operand has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:28,193 INFO L93 Difference]: Finished difference Result 3842 states and 6140 transitions. [2023-11-22 22:41:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:28,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 757 [2023-11-22 22:41:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:28,196 INFO L225 Difference]: With dead ends: 3842 [2023-11-22 22:41:28,196 INFO L226 Difference]: Without dead ends: 2286 [2023-11-22 22:41:28,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1536 GetRequests, 1531 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:28,198 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:28,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:28,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2286 states. [2023-11-22 22:41:28,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2286 to 2286. [2023-11-22 22:41:28,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2286 states, 2236 states have (on average 1.5916815742397137) internal successors, (3559), 2236 states have internal predecessors, (3559), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2286 states to 2286 states and 3655 transitions. [2023-11-22 22:41:28,315 INFO L78 Accepts]: Start accepts. Automaton has 2286 states and 3655 transitions. Word has length 757 [2023-11-22 22:41:28,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:28,316 INFO L495 AbstractCegarLoop]: Abstraction has 2286 states and 3655 transitions. [2023-11-22 22:41:28,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:28,316 INFO L276 IsEmpty]: Start isEmpty. Operand 2286 states and 3655 transitions. [2023-11-22 22:41:28,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 759 [2023-11-22 22:41:28,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:28,322 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:28,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:28,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:28,536 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:28,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:28,537 INFO L85 PathProgramCache]: Analyzing trace with hash -622811231, now seen corresponding path program 1 times [2023-11-22 22:41:28,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:28,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113527468] [2023-11-22 22:41:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:28,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:29,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:29,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2023-11-22 22:41:29,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-22 22:41:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-22 22:41:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-22 22:41:29,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 723 [2023-11-22 22:41:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2023-11-22 22:41:29,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113527468] [2023-11-22 22:41:29,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113527468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:29,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488544666] [2023-11-22 22:41:29,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:29,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:29,210 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:29,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-22 22:41:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:30,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 4056 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:30,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-11-22 22:41:30,160 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-22 22:41:30,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488544666] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:30,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:30,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:30,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526299672] [2023-11-22 22:41:30,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:30,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:30,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:30,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:30,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:30,187 INFO L87 Difference]: Start difference. First operand 2286 states and 3655 transitions. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:30,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:30,340 INFO L93 Difference]: Finished difference Result 3846 states and 6144 transitions. [2023-11-22 22:41:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:30,341 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 758 [2023-11-22 22:41:30,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:30,343 INFO L225 Difference]: With dead ends: 3846 [2023-11-22 22:41:30,344 INFO L226 Difference]: Without dead ends: 2288 [2023-11-22 22:41:30,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1533 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:30,345 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:30,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2288 states. [2023-11-22 22:41:30,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2288 to 2288. [2023-11-22 22:41:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2288 states, 2238 states have (on average 1.5911528150134049) internal successors, (3561), 2238 states have internal predecessors, (3561), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2288 states to 2288 states and 3657 transitions. [2023-11-22 22:41:30,501 INFO L78 Accepts]: Start accepts. Automaton has 2288 states and 3657 transitions. Word has length 758 [2023-11-22 22:41:30,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:30,502 INFO L495 AbstractCegarLoop]: Abstraction has 2288 states and 3657 transitions. [2023-11-22 22:41:30,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:30,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2288 states and 3657 transitions. [2023-11-22 22:41:30,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-11-22 22:41:30,509 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:30,510 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:30,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-22 22:41:30,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-22 22:41:30,733 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:30,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:30,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1617986198, now seen corresponding path program 1 times [2023-11-22 22:41:30,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:30,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359251461] [2023-11-22 22:41:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:30,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2023-11-22 22:41:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-22 22:41:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-22 22:41:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-22 22:41:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-22 22:41:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:31,403 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2023-11-22 22:41:31,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:31,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359251461] [2023-11-22 22:41:31,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359251461] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:31,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885951944] [2023-11-22 22:41:31,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:31,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:31,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:31,410 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:31,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-22 22:41:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:32,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 4063 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:32,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2023-11-22 22:41:32,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:32,407 INFO L134 CoverageAnalysis]: Checked inductivity of 329 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-22 22:41:32,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885951944] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:32,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987225150] [2023-11-22 22:41:32,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:32,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:32,410 INFO L87 Difference]: Start difference. First operand 2288 states and 3657 transitions. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:32,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:32,564 INFO L93 Difference]: Finished difference Result 3850 states and 6148 transitions. [2023-11-22 22:41:32,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:32,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 759 [2023-11-22 22:41:32,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:32,567 INFO L225 Difference]: With dead ends: 3850 [2023-11-22 22:41:32,567 INFO L226 Difference]: Without dead ends: 2290 [2023-11-22 22:41:32,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1540 GetRequests, 1535 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:32,569 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:32,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2023-11-22 22:41:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2290. [2023-11-22 22:41:32,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2290 states, 2240 states have (on average 1.590625) internal successors, (3563), 2240 states have internal predecessors, (3563), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:32,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2290 states to 2290 states and 3659 transitions. [2023-11-22 22:41:32,691 INFO L78 Accepts]: Start accepts. Automaton has 2290 states and 3659 transitions. Word has length 759 [2023-11-22 22:41:32,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:32,692 INFO L495 AbstractCegarLoop]: Abstraction has 2290 states and 3659 transitions. [2023-11-22 22:41:32,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:32,692 INFO L276 IsEmpty]: Start isEmpty. Operand 2290 states and 3659 transitions. [2023-11-22 22:41:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-11-22 22:41:32,698 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:32,698 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:32,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:32,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2023-11-22 22:41:32,916 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:32,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1187210216, now seen corresponding path program 1 times [2023-11-22 22:41:32,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919958321] [2023-11-22 22:41:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2023-11-22 22:41:33,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-22 22:41:33,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-22 22:41:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-22 22:41:33,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-22 22:41:33,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-11-22 22:41:33,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:33,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919958321] [2023-11-22 22:41:33,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919958321] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:33,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136203813] [2023-11-22 22:41:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:33,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:33,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:33,647 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:33,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-22 22:41:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:34,606 INFO L262 TraceCheckSpWp]: Trace formula consists of 4070 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:34,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-22 22:41:34,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-22 22:41:34,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136203813] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:34,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:34,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:34,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314015694] [2023-11-22 22:41:34,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:34,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:34,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:34,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:34,660 INFO L87 Difference]: Start difference. First operand 2290 states and 3659 transitions. Second operand has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:34,822 INFO L93 Difference]: Finished difference Result 3854 states and 6152 transitions. [2023-11-22 22:41:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 760 [2023-11-22 22:41:34,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:34,825 INFO L225 Difference]: With dead ends: 3854 [2023-11-22 22:41:34,825 INFO L226 Difference]: Without dead ends: 2292 [2023-11-22 22:41:34,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1537 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:34,827 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:34,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:34,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2292 states. [2023-11-22 22:41:34,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2292 to 2292. [2023-11-22 22:41:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2292 states, 2242 states have (on average 1.5900981266726137) internal successors, (3565), 2242 states have internal predecessors, (3565), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:34,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2292 states to 2292 states and 3661 transitions. [2023-11-22 22:41:34,957 INFO L78 Accepts]: Start accepts. Automaton has 2292 states and 3661 transitions. Word has length 760 [2023-11-22 22:41:34,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:34,957 INFO L495 AbstractCegarLoop]: Abstraction has 2292 states and 3661 transitions. [2023-11-22 22:41:34,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.66666666666666) internal successors, (692), 3 states have internal predecessors, (692), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:34,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2292 states and 3661 transitions. [2023-11-22 22:41:34,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 762 [2023-11-22 22:41:34,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:34,964 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:34,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:35,172 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:35,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:35,172 INFO L85 PathProgramCache]: Analyzing trace with hash 209951787, now seen corresponding path program 1 times [2023-11-22 22:41:35,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:35,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547193833] [2023-11-22 22:41:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:35,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 671 [2023-11-22 22:41:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-11-22 22:41:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2023-11-22 22:41:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-22 22:41:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-22 22:41:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2023-11-22 22:41:36,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:36,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547193833] [2023-11-22 22:41:36,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547193833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:36,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500397289] [2023-11-22 22:41:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:36,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:36,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:36,002 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:36,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-22 22:41:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:36,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 4077 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:37,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-11-22 22:41:37,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-22 22:41:37,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500397289] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:37,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:37,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082639035] [2023-11-22 22:41:37,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:37,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:37,051 INFO L87 Difference]: Start difference. First operand 2292 states and 3661 transitions. Second operand has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:37,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:37,216 INFO L93 Difference]: Finished difference Result 3858 states and 6156 transitions. [2023-11-22 22:41:37,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:37,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 761 [2023-11-22 22:41:37,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:37,220 INFO L225 Difference]: With dead ends: 3858 [2023-11-22 22:41:37,220 INFO L226 Difference]: Without dead ends: 2294 [2023-11-22 22:41:37,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1544 GetRequests, 1539 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:37,222 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:37,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2294 states. [2023-11-22 22:41:37,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2294 to 2294. [2023-11-22 22:41:37,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2294 states, 2244 states have (on average 1.589572192513369) internal successors, (3567), 2244 states have internal predecessors, (3567), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:37,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2294 states to 2294 states and 3663 transitions. [2023-11-22 22:41:37,351 INFO L78 Accepts]: Start accepts. Automaton has 2294 states and 3663 transitions. Word has length 761 [2023-11-22 22:41:37,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:37,352 INFO L495 AbstractCegarLoop]: Abstraction has 2294 states and 3663 transitions. [2023-11-22 22:41:37,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2294 states and 3663 transitions. [2023-11-22 22:41:37,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 763 [2023-11-22 22:41:37,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:37,358 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:37,376 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:37,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:37,559 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:37,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash -227457749, now seen corresponding path program 1 times [2023-11-22 22:41:37,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:37,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064150783] [2023-11-22 22:41:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:37,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 672 [2023-11-22 22:41:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 686 [2023-11-22 22:41:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2023-11-22 22:41:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-22 22:41:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-22 22:41:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:38,238 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-11-22 22:41:38,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064150783] [2023-11-22 22:41:38,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064150783] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:38,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990556136] [2023-11-22 22:41:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:38,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:38,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:38,239 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:38,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-22 22:41:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:39,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 4084 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:39,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-22 22:41:39,328 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:39,353 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-22 22:41:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990556136] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:39,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:39,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:39,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696594975] [2023-11-22 22:41:39,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:39,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:39,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:39,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:39,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:39,356 INFO L87 Difference]: Start difference. First operand 2294 states and 3663 transitions. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:39,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:39,520 INFO L93 Difference]: Finished difference Result 3862 states and 6160 transitions. [2023-11-22 22:41:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 762 [2023-11-22 22:41:39,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:39,523 INFO L225 Difference]: With dead ends: 3862 [2023-11-22 22:41:39,524 INFO L226 Difference]: Without dead ends: 2296 [2023-11-22 22:41:39,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 1541 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:39,526 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:39,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-11-22 22:41:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2296. [2023-11-22 22:41:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2296 states, 2246 states have (on average 1.5890471950133571) internal successors, (3569), 2246 states have internal predecessors, (3569), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 3665 transitions. [2023-11-22 22:41:39,657 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 3665 transitions. Word has length 762 [2023-11-22 22:41:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:39,658 INFO L495 AbstractCegarLoop]: Abstraction has 2296 states and 3665 transitions. [2023-11-22 22:41:39,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 3665 transitions. [2023-11-22 22:41:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 764 [2023-11-22 22:41:39,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:39,665 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:39,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-22 22:41:39,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:39,873 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:39,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:39,874 INFO L85 PathProgramCache]: Analyzing trace with hash -503742641, now seen corresponding path program 1 times [2023-11-22 22:41:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:39,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326852260] [2023-11-22 22:41:39,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:39,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:40,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 673 [2023-11-22 22:41:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-22 22:41:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-22 22:41:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-22 22:41:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-22 22:41:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2023-11-22 22:41:40,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326852260] [2023-11-22 22:41:40,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326852260] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:40,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877644323] [2023-11-22 22:41:40,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:40,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:40,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:40,584 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:40,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-22 22:41:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:41,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 4091 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-22 22:41:41,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:41,619 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-22 22:41:41,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:41,644 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-22 22:41:41,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877644323] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:41,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:41,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:41,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642202346] [2023-11-22 22:41:41,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:41,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:41,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:41,647 INFO L87 Difference]: Start difference. First operand 2296 states and 3665 transitions. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:41,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:41,814 INFO L93 Difference]: Finished difference Result 3866 states and 6164 transitions. [2023-11-22 22:41:41,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:41,815 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 763 [2023-11-22 22:41:41,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:41,817 INFO L225 Difference]: With dead ends: 3866 [2023-11-22 22:41:41,817 INFO L226 Difference]: Without dead ends: 2298 [2023-11-22 22:41:41,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1548 GetRequests, 1543 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:41,819 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:41,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:41,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2023-11-22 22:41:41,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2298. [2023-11-22 22:41:41,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2248 states have (on average 1.5885231316725978) internal successors, (3571), 2248 states have internal predecessors, (3571), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 3667 transitions. [2023-11-22 22:41:41,987 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 3667 transitions. Word has length 763 [2023-11-22 22:41:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:41,987 INFO L495 AbstractCegarLoop]: Abstraction has 2298 states and 3667 transitions. [2023-11-22 22:41:41,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 3667 transitions. [2023-11-22 22:41:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 765 [2023-11-22 22:41:41,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:41,993 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:42,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-22 22:41:42,211 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:42,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash -141058092, now seen corresponding path program 1 times [2023-11-22 22:41:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:42,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857506471] [2023-11-22 22:41:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:42,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 674 [2023-11-22 22:41:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 688 [2023-11-22 22:41:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 705 [2023-11-22 22:41:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-22 22:41:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-22 22:41:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:42,898 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2023-11-22 22:41:42,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:42,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857506471] [2023-11-22 22:41:42,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857506471] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:42,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209019007] [2023-11-22 22:41:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:42,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:42,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:42,900 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:42,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-22 22:41:43,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:43,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 4098 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:43,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:43,907 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-22 22:41:43,907 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 334 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-22 22:41:43,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209019007] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:43,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:43,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:43,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922748394] [2023-11-22 22:41:43,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:43,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:43,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:43,934 INFO L87 Difference]: Start difference. First operand 2298 states and 3667 transitions. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:44,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:44,098 INFO L93 Difference]: Finished difference Result 3870 states and 6168 transitions. [2023-11-22 22:41:44,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:44,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 764 [2023-11-22 22:41:44,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:44,101 INFO L225 Difference]: With dead ends: 3870 [2023-11-22 22:41:44,101 INFO L226 Difference]: Without dead ends: 2300 [2023-11-22 22:41:44,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1550 GetRequests, 1545 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:44,103 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:44,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2783 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:44,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2023-11-22 22:41:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2023-11-22 22:41:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 2250 states have (on average 1.588) internal successors, (3573), 2250 states have internal predecessors, (3573), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3669 transitions. [2023-11-22 22:41:44,236 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3669 transitions. Word has length 764 [2023-11-22 22:41:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:44,237 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3669 transitions. [2023-11-22 22:41:44,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:44,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3669 transitions. [2023-11-22 22:41:44,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2023-11-22 22:41:44,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:44,243 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:44,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:44,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-22 22:41:44,461 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:44,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash -413116194, now seen corresponding path program 1 times [2023-11-22 22:41:44,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:44,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518804953] [2023-11-22 22:41:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:44,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:45,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2023-11-22 22:41:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2023-11-22 22:41:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-22 22:41:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-22 22:41:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-22 22:41:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:45,177 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-11-22 22:41:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518804953] [2023-11-22 22:41:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518804953] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172628820] [2023-11-22 22:41:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:45,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:45,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:45,179 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:45,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-22 22:41:46,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:46,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 4105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 22:41:46,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:46,238 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 192 proven. 4 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-22 22:41:46,239 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-22 22:41:46,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172628820] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:46,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 22:41:46,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 7 [2023-11-22 22:41:46,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827269694] [2023-11-22 22:41:46,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:46,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 22:41:46,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:46,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 22:41:46,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:46,266 INFO L87 Difference]: Start difference. First operand 2300 states and 3669 transitions. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:46,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:46,434 INFO L93 Difference]: Finished difference Result 3874 states and 6172 transitions. [2023-11-22 22:41:46,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 22:41:46,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 765 [2023-11-22 22:41:46,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:46,437 INFO L225 Difference]: With dead ends: 3874 [2023-11-22 22:41:46,437 INFO L226 Difference]: Without dead ends: 2302 [2023-11-22 22:41:46,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1552 GetRequests, 1547 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:41:46,439 INFO L413 NwaCegarLoop]: 1393 mSDtfsCounter, 0 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2784 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:46,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2784 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-22 22:41:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2023-11-22 22:41:46,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2302. [2023-11-22 22:41:46,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2302 states, 2252 states have (on average 1.5874777975133214) internal successors, (3575), 2252 states have internal predecessors, (3575), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:46,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2302 states to 2302 states and 3671 transitions. [2023-11-22 22:41:46,578 INFO L78 Accepts]: Start accepts. Automaton has 2302 states and 3671 transitions. Word has length 765 [2023-11-22 22:41:46,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:46,578 INFO L495 AbstractCegarLoop]: Abstraction has 2302 states and 3671 transitions. [2023-11-22 22:41:46,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:46,579 INFO L276 IsEmpty]: Start isEmpty. Operand 2302 states and 3671 transitions. [2023-11-22 22:41:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2023-11-22 22:41:46,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:46,585 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:46,604 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-22 22:41:46,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-22 22:41:46,786 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:46,787 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:46,787 INFO L85 PathProgramCache]: Analyzing trace with hash -142266535, now seen corresponding path program 1 times [2023-11-22 22:41:46,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:46,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853437980] [2023-11-22 22:41:46,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:46,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:47,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2023-11-22 22:41:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-22 22:41:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-22 22:41:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:41:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-22 22:41:47,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:47,566 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-22 22:41:47,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853437980] [2023-11-22 22:41:47,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853437980] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:47,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438044624] [2023-11-22 22:41:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:47,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:47,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:47,567 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:47,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-22 22:41:48,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:48,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 4112 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:41:48,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:48,653 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 192 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2023-11-22 22:41:48,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:48,687 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2023-11-22 22:41:48,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438044624] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:48,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:48,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:41:48,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482523790] [2023-11-22 22:41:48,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:48,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:41:48,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:48,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:41:48,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:48,691 INFO L87 Difference]: Start difference. First operand 2302 states and 3671 transitions. Second operand has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:48,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:48,959 INFO L93 Difference]: Finished difference Result 3881 states and 6181 transitions. [2023-11-22 22:41:48,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:41:48,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 766 [2023-11-22 22:41:48,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:48,963 INFO L225 Difference]: With dead ends: 3881 [2023-11-22 22:41:48,963 INFO L226 Difference]: Without dead ends: 2307 [2023-11-22 22:41:48,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1554 GetRequests, 1547 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:48,966 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 8 mSDsluCounter, 8350 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9746 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:48,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9746 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2023-11-22 22:41:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2304. [2023-11-22 22:41:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2304 states, 2254 states have (on average 1.5869565217391304) internal successors, (3577), 2254 states have internal predecessors, (3577), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2304 states to 2304 states and 3673 transitions. [2023-11-22 22:41:49,113 INFO L78 Accepts]: Start accepts. Automaton has 2304 states and 3673 transitions. Word has length 766 [2023-11-22 22:41:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:49,113 INFO L495 AbstractCegarLoop]: Abstraction has 2304 states and 3673 transitions. [2023-11-22 22:41:49,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:49,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2304 states and 3673 transitions. [2023-11-22 22:41:49,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2023-11-22 22:41:49,120 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:49,120 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:49,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:49,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-22 22:41:49,335 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:49,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash -951308848, now seen corresponding path program 2 times [2023-11-22 22:41:49,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:49,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838203623] [2023-11-22 22:41:49,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:49,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 677 [2023-11-22 22:41:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 691 [2023-11-22 22:41:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-22 22:41:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-11-22 22:41:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-22 22:41:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:50,055 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 92 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-22 22:41:50,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838203623] [2023-11-22 22:41:50,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838203623] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:50,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380617117] [2023-11-22 22:41:50,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:41:50,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:50,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:50,057 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:50,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-22 22:41:50,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:41:50,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:41:50,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 1055 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-22 22:41:50,758 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-11-22 22:41:50,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:41:50,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380617117] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:50,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:41:50,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:41:50,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620582217] [2023-11-22 22:41:50,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:50,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:41:50,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:50,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:41:50,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:41:50,854 INFO L87 Difference]: Start difference. First operand 2304 states and 3673 transitions. Second operand has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:51,612 INFO L93 Difference]: Finished difference Result 4756 states and 7589 transitions. [2023-11-22 22:41:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 22:41:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 767 [2023-11-22 22:41:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:51,623 INFO L225 Difference]: With dead ends: 4756 [2023-11-22 22:41:51,623 INFO L226 Difference]: Without dead ends: 3929 [2023-11-22 22:41:51,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 786 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:41:51,628 INFO L413 NwaCegarLoop]: 1496 mSDtfsCounter, 844 mSDsluCounter, 5265 mSDsCounter, 0 mSdLazyCounter, 754 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 6761 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 754 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:51,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 6761 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 754 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-22 22:41:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3929 states. [2023-11-22 22:41:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3929 to 2291. [2023-11-22 22:41:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 2241 states have (on average 1.5867916108879965) internal successors, (3556), 2241 states have internal predecessors, (3556), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:51,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3652 transitions. [2023-11-22 22:41:51,787 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3652 transitions. Word has length 767 [2023-11-22 22:41:51,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:51,788 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3652 transitions. [2023-11-22 22:41:51,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.83333333333333) internal successors, (695), 6 states have internal predecessors, (695), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:51,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3652 transitions. [2023-11-22 22:41:51,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-11-22 22:41:51,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:51,795 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:51,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-22 22:41:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:52,004 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:52,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:52,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1627888462, now seen corresponding path program 1 times [2023-11-22 22:41:52,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:52,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160630023] [2023-11-22 22:41:52,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:52,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2023-11-22 22:41:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2023-11-22 22:41:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-22 22:41:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-22 22:41:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-22 22:41:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-22 22:41:52,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:52,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160630023] [2023-11-22 22:41:52,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160630023] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:52,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226616080] [2023-11-22 22:41:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:52,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:52,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:52,789 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:52,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-22 22:41:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:53,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 4126 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:41:53,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:53,798 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 193 proven. 6 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2023-11-22 22:41:53,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2023-11-22 22:41:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226616080] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:53,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:53,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:41:53,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758901601] [2023-11-22 22:41:53,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:41:53,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:41:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:53,836 INFO L87 Difference]: Start difference. First operand 2291 states and 3652 transitions. Second operand has 9 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:54,071 INFO L93 Difference]: Finished difference Result 3859 states and 6143 transitions. [2023-11-22 22:41:54,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:41:54,072 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 769 [2023-11-22 22:41:54,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:54,076 INFO L225 Difference]: With dead ends: 3859 [2023-11-22 22:41:54,076 INFO L226 Difference]: Without dead ends: 2296 [2023-11-22 22:41:54,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1560 GetRequests, 1553 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:54,079 INFO L413 NwaCegarLoop]: 1396 mSDtfsCounter, 8 mSDsluCounter, 5564 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:54,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6960 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-11-22 22:41:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2293. [2023-11-22 22:41:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2293 states, 2243 states have (on average 1.5862683905483728) internal successors, (3558), 2243 states have internal predecessors, (3558), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-22 22:41:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2293 states to 2293 states and 3654 transitions. [2023-11-22 22:41:54,227 INFO L78 Accepts]: Start accepts. Automaton has 2293 states and 3654 transitions. Word has length 769 [2023-11-22 22:41:54,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:54,228 INFO L495 AbstractCegarLoop]: Abstraction has 2293 states and 3654 transitions. [2023-11-22 22:41:54,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:54,228 INFO L276 IsEmpty]: Start isEmpty. Operand 2293 states and 3654 transitions. [2023-11-22 22:41:54,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 771 [2023-11-22 22:41:54,234 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:54,235 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:54,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-22 22:41:54,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-22 22:41:54,448 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:54,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1706940989, now seen corresponding path program 2 times [2023-11-22 22:41:54,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:54,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770071700] [2023-11-22 22:41:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:54,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:54,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 679 [2023-11-22 22:41:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-22 22:41:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-22 22:41:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-22 22:41:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-22 22:41:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:55,174 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 93 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-22 22:41:55,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770071700] [2023-11-22 22:41:55,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770071700] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:55,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985895903] [2023-11-22 22:41:55,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:41:55,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:55,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:55,176 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:55,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-22 22:41:55,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:41:55,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:41:55,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 22:41:55,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:56,572 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-11-22 22:41:56,572 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:41:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985895903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:41:56,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:41:56,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:41:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576264056] [2023-11-22 22:41:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:41:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:41:56,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:56,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:41:56,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:56,575 INFO L87 Difference]: Start difference. First operand 2293 states and 3654 transitions. Second operand has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:57,291 INFO L93 Difference]: Finished difference Result 3358 states and 5341 transitions. [2023-11-22 22:41:57,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:41:57,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 770 [2023-11-22 22:41:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:57,293 INFO L225 Difference]: With dead ends: 3358 [2023-11-22 22:41:57,294 INFO L226 Difference]: Without dead ends: 1514 [2023-11-22 22:41:57,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:41:57,319 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 794 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:57,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1710 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-22 22:41:57,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2023-11-22 22:41:57,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1456. [2023-11-22 22:41:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1422 states have (on average 1.5864978902953586) internal successors, (2256), 1422 states have internal predecessors, (2256), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:57,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2320 transitions. [2023-11-22 22:41:57,411 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2320 transitions. Word has length 770 [2023-11-22 22:41:57,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:57,412 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 2320 transitions. [2023-11-22 22:41:57,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 173.5) internal successors, (694), 4 states have internal predecessors, (694), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:41:57,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2320 transitions. [2023-11-22 22:41:57,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 772 [2023-11-22 22:41:57,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:57,418 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:57,433 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2023-11-22 22:41:57,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:57,624 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:41:57,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:41:57,624 INFO L85 PathProgramCache]: Analyzing trace with hash -2108108955, now seen corresponding path program 1 times [2023-11-22 22:41:57,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:41:57,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805387613] [2023-11-22 22:41:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:57,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:41:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:41:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:41:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:41:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:41:58,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:41:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2023-11-22 22:41:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-22 22:41:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-22 22:41:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-22 22:41:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-22 22:41:58,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-22 22:41:58,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:41:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805387613] [2023-11-22 22:41:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805387613] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:41:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787904527] [2023-11-22 22:41:58,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:41:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:41:58,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:41:58,368 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:41:58,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-22 22:41:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:41:59,450 INFO L262 TraceCheckSpWp]: Trace formula consists of 4137 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:41:59,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:41:59,479 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2023-11-22 22:41:59,479 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:41:59,513 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-22 22:41:59,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787904527] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:41:59,513 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:41:59,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:41:59,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694646796] [2023-11-22 22:41:59,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:41:59,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:41:59,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:41:59,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:41:59,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:59,516 INFO L87 Difference]: Start difference. First operand 1456 states and 2320 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:59,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:41:59,705 INFO L93 Difference]: Finished difference Result 2212 states and 3517 transitions. [2023-11-22 22:41:59,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:41:59,705 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 771 [2023-11-22 22:41:59,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:41:59,707 INFO L225 Difference]: With dead ends: 2212 [2023-11-22 22:41:59,707 INFO L226 Difference]: Without dead ends: 1460 [2023-11-22 22:41:59,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1564 GetRequests, 1557 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:41:59,709 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 8 mSDsluCounter, 6947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8341 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:41:59,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8341 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:41:59,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2023-11-22 22:41:59,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1457. [2023-11-22 22:41:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1457 states, 1423 states have (on average 1.5860857343640198) internal successors, (2257), 1423 states have internal predecessors, (2257), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:41:59,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2321 transitions. [2023-11-22 22:41:59,830 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2321 transitions. Word has length 771 [2023-11-22 22:41:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:41:59,830 INFO L495 AbstractCegarLoop]: Abstraction has 1457 states and 2321 transitions. [2023-11-22 22:41:59,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:41:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2321 transitions. [2023-11-22 22:41:59,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-22 22:41:59,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:41:59,836 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:59,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2023-11-22 22:42:00,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:00,054 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:00,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:00,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1439309709, now seen corresponding path program 2 times [2023-11-22 22:42:00,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:00,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735219614] [2023-11-22 22:42:00,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:00,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2023-11-22 22:42:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2023-11-22 22:42:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 681 [2023-11-22 22:42:00,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-22 22:42:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-22 22:42:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-22 22:42:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2023-11-22 22:42:00,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-22 22:42:00,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735219614] [2023-11-22 22:42:00,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735219614] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:00,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621100051] [2023-11-22 22:42:00,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:00,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:00,780 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:00,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-22 22:42:01,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:42:01,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:01,532 INFO L262 TraceCheckSpWp]: Trace formula consists of 1062 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-22 22:42:01,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2023-11-22 22:42:01,634 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:01,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621100051] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:01,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2023-11-22 22:42:01,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917060168] [2023-11-22 22:42:01,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:01,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:01,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:42:01,637 INFO L87 Difference]: Start difference. First operand 1457 states and 2321 transitions. Second operand has 9 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:04,051 INFO L93 Difference]: Finished difference Result 4312 states and 6839 transitions. [2023-11-22 22:42:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 22:42:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 772 [2023-11-22 22:42:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:04,054 INFO L225 Difference]: With dead ends: 4312 [2023-11-22 22:42:04,055 INFO L226 Difference]: Without dead ends: 3322 [2023-11-22 22:42:04,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 789 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:42:04,056 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 3140 mSDsluCounter, 7737 mSDsCounter, 0 mSdLazyCounter, 5105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3150 SdHoareTripleChecker+Valid, 9249 SdHoareTripleChecker+Invalid, 5117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 5105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:04,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3150 Valid, 9249 Invalid, 5117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 5105 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-22 22:42:04,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3322 states. [2023-11-22 22:42:04,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3322 to 1505. [2023-11-22 22:42:04,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1505 states, 1471 states have (on average 1.5791978246091094) internal successors, (2323), 1471 states have internal predecessors, (2323), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:04,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1505 states to 1505 states and 2387 transitions. [2023-11-22 22:42:04,144 INFO L78 Accepts]: Start accepts. Automaton has 1505 states and 2387 transitions. Word has length 772 [2023-11-22 22:42:04,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:04,144 INFO L495 AbstractCegarLoop]: Abstraction has 1505 states and 2387 transitions. [2023-11-22 22:42:04,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 77.88888888888889) internal successors, (701), 9 states have internal predecessors, (701), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:04,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1505 states and 2387 transitions. [2023-11-22 22:42:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2023-11-22 22:42:04,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:04,150 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:04,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:04,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-22 22:42:04,363 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:04,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:04,364 INFO L85 PathProgramCache]: Analyzing trace with hash 102730867, now seen corresponding path program 1 times [2023-11-22 22:42:04,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:04,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022789428] [2023-11-22 22:42:04,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:05,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2023-11-22 22:42:05,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 696 [2023-11-22 22:42:05,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2023-11-22 22:42:05,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2023-11-22 22:42:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2023-11-22 22:42:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-22 22:42:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:05,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022789428] [2023-11-22 22:42:05,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022789428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:05,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663758219] [2023-11-22 22:42:05,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:05,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:05,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:05,060 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:05,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-22 22:42:06,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:06,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 4142 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:06,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-11-22 22:42:06,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:06,231 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-11-22 22:42:06,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663758219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:06,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:06,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:06,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955205298] [2023-11-22 22:42:06,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:06,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:06,236 INFO L87 Difference]: Start difference. First operand 1505 states and 2387 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:06,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:06,428 INFO L93 Difference]: Finished difference Result 2286 states and 3618 transitions. [2023-11-22 22:42:06,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:06,429 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 772 [2023-11-22 22:42:06,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:06,431 INFO L225 Difference]: With dead ends: 2286 [2023-11-22 22:42:06,431 INFO L226 Difference]: Without dead ends: 1509 [2023-11-22 22:42:06,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1566 GetRequests, 1559 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:06,433 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 8 mSDsluCounter, 6947 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8341 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:06,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8341 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:06,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2023-11-22 22:42:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1506. [2023-11-22 22:42:06,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1472 states have (on average 1.578804347826087) internal successors, (2324), 1472 states have internal predecessors, (2324), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:06,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2388 transitions. [2023-11-22 22:42:06,519 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2388 transitions. Word has length 772 [2023-11-22 22:42:06,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:06,520 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2388 transitions. [2023-11-22 22:42:06,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:06,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2388 transitions. [2023-11-22 22:42:06,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-22 22:42:06,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:06,526 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:06,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:06,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-22 22:42:06,743 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:06,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:06,744 INFO L85 PathProgramCache]: Analyzing trace with hash 180029231, now seen corresponding path program 2 times [2023-11-22 22:42:06,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:06,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142074553] [2023-11-22 22:42:06,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:06,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:07,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-22 22:42:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-22 22:42:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-22 22:42:07,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-22 22:42:07,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-22 22:42:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:07,454 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-22 22:42:07,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142074553] [2023-11-22 22:42:07,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142074553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:07,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696566977] [2023-11-22 22:42:07,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:07,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:07,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:07,456 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:07,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-22 22:42:08,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:42:08,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:08,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 1065 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-22 22:42:08,219 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:09,600 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-11-22 22:42:09,600 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:09,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696566977] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:09,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:09,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:42:09,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764366972] [2023-11-22 22:42:09,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:09,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:09,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:09,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:09,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:42:09,603 INFO L87 Difference]: Start difference. First operand 1506 states and 2388 transitions. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:10,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:10,990 INFO L93 Difference]: Finished difference Result 3635 states and 5748 transitions. [2023-11-22 22:42:10,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:10,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 773 [2023-11-22 22:42:10,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:10,993 INFO L225 Difference]: With dead ends: 3635 [2023-11-22 22:42:10,993 INFO L226 Difference]: Without dead ends: 2569 [2023-11-22 22:42:10,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:10,995 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 2004 mSDsluCounter, 2580 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2009 SdHoareTripleChecker+Valid, 3480 SdHoareTripleChecker+Invalid, 2511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:10,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2009 Valid, 3480 Invalid, 2511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2510 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 22:42:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2569 states. [2023-11-22 22:42:11,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2569 to 1572. [2023-11-22 22:42:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1538 states have (on average 1.566970091027308) internal successors, (2410), 1538 states have internal predecessors, (2410), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:11,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2474 transitions. [2023-11-22 22:42:11,123 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2474 transitions. Word has length 773 [2023-11-22 22:42:11,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:11,123 INFO L495 AbstractCegarLoop]: Abstraction has 1572 states and 2474 transitions. [2023-11-22 22:42:11,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2474 transitions. [2023-11-22 22:42:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2023-11-22 22:42:11,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:11,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:11,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2023-11-22 22:42:11,343 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:11,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:11,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1159279573, now seen corresponding path program 1 times [2023-11-22 22:42:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579983335] [2023-11-22 22:42:11,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:11,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 683 [2023-11-22 22:42:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2023-11-22 22:42:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-22 22:42:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-22 22:42:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-22 22:42:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:12,063 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-22 22:42:12,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579983335] [2023-11-22 22:42:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579983335] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705572578] [2023-11-22 22:42:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:12,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:12,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:12,065 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:12,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-22 22:42:13,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:13,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 4151 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:13,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:13,214 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 195 proven. 6 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-22 22:42:13,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:13,251 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2023-11-22 22:42:13,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705572578] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:13,251 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:13,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60251668] [2023-11-22 22:42:13,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:13,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:13,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:13,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:13,254 INFO L87 Difference]: Start difference. First operand 1572 states and 2474 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:13,467 INFO L93 Difference]: Finished difference Result 2387 states and 3749 transitions. [2023-11-22 22:42:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:13,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 773 [2023-11-22 22:42:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:13,470 INFO L225 Difference]: With dead ends: 2387 [2023-11-22 22:42:13,470 INFO L226 Difference]: Without dead ends: 1576 [2023-11-22 22:42:13,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1568 GetRequests, 1561 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:13,471 INFO L413 NwaCegarLoop]: 1394 mSDtfsCounter, 8 mSDsluCounter, 8338 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9732 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:13,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9732 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2023-11-22 22:42:13,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1573. [2023-11-22 22:42:13,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1573 states, 1539 states have (on average 1.566601689408707) internal successors, (2411), 1539 states have internal predecessors, (2411), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 2475 transitions. [2023-11-22 22:42:13,561 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 2475 transitions. Word has length 773 [2023-11-22 22:42:13,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:13,562 INFO L495 AbstractCegarLoop]: Abstraction has 1573 states and 2475 transitions. [2023-11-22 22:42:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 2475 transitions. [2023-11-22 22:42:13,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2023-11-22 22:42:13,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:13,568 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:13,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:13,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2023-11-22 22:42:13,786 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:13,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:13,786 INFO L85 PathProgramCache]: Analyzing trace with hash -458592235, now seen corresponding path program 2 times [2023-11-22 22:42:13,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:13,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027842503] [2023-11-22 22:42:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:13,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:14,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 684 [2023-11-22 22:42:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-22 22:42:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 715 [2023-11-22 22:42:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-22 22:42:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-22 22:42:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-22 22:42:14,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:14,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027842503] [2023-11-22 22:42:14,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027842503] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:14,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154811205] [2023-11-22 22:42:14,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:14,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:14,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:14,506 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:14,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-22 22:42:15,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:42:15,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:15,295 INFO L262 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-22 22:42:15,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 174 proven. 1 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2023-11-22 22:42:16,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:18,626 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 68 proven. 7 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2023-11-22 22:42:18,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [154811205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:18,627 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:18,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 9] total 16 [2023-11-22 22:42:18,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698454355] [2023-11-22 22:42:18,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:18,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-22 22:42:18,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:18,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-22 22:42:18,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:42:18,630 INFO L87 Difference]: Start difference. First operand 1573 states and 2475 transitions. Second operand has 16 states, 16 states have (on average 120.4375) internal successors, (1927), 16 states have internal predecessors, (1927), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-22 22:42:22,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:22,152 INFO L93 Difference]: Finished difference Result 4451 states and 6987 transitions. [2023-11-22 22:42:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-22 22:42:22,152 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 120.4375) internal successors, (1927), 16 states have internal predecessors, (1927), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 774 [2023-11-22 22:42:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:22,157 INFO L225 Difference]: With dead ends: 4451 [2023-11-22 22:42:22,157 INFO L226 Difference]: Without dead ends: 3493 [2023-11-22 22:42:22,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1597 GetRequests, 1562 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=323, Invalid=1009, Unknown=0, NotChecked=0, Total=1332 [2023-11-22 22:42:22,160 INFO L413 NwaCegarLoop]: 1442 mSDtfsCounter, 8459 mSDsluCounter, 10311 mSDsCounter, 0 mSdLazyCounter, 6910 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8459 SdHoareTripleChecker+Valid, 11753 SdHoareTripleChecker+Invalid, 6941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 6910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:22,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8459 Valid, 11753 Invalid, 6941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 6910 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-22 22:42:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3493 states. [2023-11-22 22:42:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3493 to 1580. [2023-11-22 22:42:22,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1546 states have (on average 1.5601552393272962) internal successors, (2412), 1546 states have internal predecessors, (2412), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:22,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2476 transitions. [2023-11-22 22:42:22,276 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2476 transitions. Word has length 774 [2023-11-22 22:42:22,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:22,277 INFO L495 AbstractCegarLoop]: Abstraction has 1580 states and 2476 transitions. [2023-11-22 22:42:22,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 120.4375) internal successors, (1927), 16 states have internal predecessors, (1927), 4 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2023-11-22 22:42:22,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2476 transitions. [2023-11-22 22:42:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2023-11-22 22:42:22,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:22,283 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:22,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2023-11-22 22:42:22,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:22,515 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:22,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:22,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1650851223, now seen corresponding path program 1 times [2023-11-22 22:42:22,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:22,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511751314] [2023-11-22 22:42:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:22,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2023-11-22 22:42:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2023-11-22 22:42:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2023-11-22 22:42:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2023-11-22 22:42:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-11-22 22:42:23,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:23,298 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-22 22:42:23,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511751314] [2023-11-22 22:42:23,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511751314] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:23,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729706832] [2023-11-22 22:42:23,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:23,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:23,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:23,299 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:23,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-22 22:42:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:24,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 4167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 22:42:24,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:24,481 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 195 proven. 22 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-22 22:42:24,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:24,527 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 95 proven. 3 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-11-22 22:42:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729706832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:24,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 22:42:24,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187914123] [2023-11-22 22:42:24,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:42:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:24,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:42:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:42:24,530 INFO L87 Difference]: Start difference. First operand 1580 states and 2476 transitions. Second operand has 12 states, 12 states have (on average 59.916666666666664) internal successors, (719), 12 states have internal predecessors, (719), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:24,775 INFO L93 Difference]: Finished difference Result 2398 states and 3750 transitions. [2023-11-22 22:42:24,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:42:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 59.916666666666664) internal successors, (719), 12 states have internal predecessors, (719), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 775 [2023-11-22 22:42:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:24,778 INFO L225 Difference]: With dead ends: 2398 [2023-11-22 22:42:24,778 INFO L226 Difference]: Without dead ends: 1582 [2023-11-22 22:42:24,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1563 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:42:24,779 INFO L413 NwaCegarLoop]: 1398 mSDtfsCounter, 11 mSDsluCounter, 9756 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11154 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:24,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11154 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:24,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-11-22 22:42:24,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1582. [2023-11-22 22:42:24,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1548 states have (on average 1.5594315245478036) internal successors, (2414), 1548 states have internal predecessors, (2414), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2478 transitions. [2023-11-22 22:42:24,891 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2478 transitions. Word has length 775 [2023-11-22 22:42:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:24,892 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 2478 transitions. [2023-11-22 22:42:24,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 59.916666666666664) internal successors, (719), 12 states have internal predecessors, (719), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2478 transitions. [2023-11-22 22:42:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-22 22:42:24,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:24,898 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:24,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-22 22:42:25,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2023-11-22 22:42:25,108 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:25,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:25,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1032632297, now seen corresponding path program 2 times [2023-11-22 22:42:25,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:25,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363443236] [2023-11-22 22:42:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:25,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:25,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:25,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-22 22:42:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-22 22:42:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-22 22:42:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-22 22:42:25,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-22 22:42:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:25,838 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-22 22:42:25,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363443236] [2023-11-22 22:42:25,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363443236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:25,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797268576] [2023-11-22 22:42:25,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:25,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:25,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:25,839 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:25,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-22 22:42:26,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:42:26,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:26,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-22 22:42:26,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 190 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2023-11-22 22:42:27,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:27,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797268576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:27,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:27,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2023-11-22 22:42:27,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652078082] [2023-11-22 22:42:27,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:27,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:42:27,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:27,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:42:27,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:42:27,120 INFO L87 Difference]: Start difference. First operand 1582 states and 2478 transitions. Second operand has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:28,180 INFO L93 Difference]: Finished difference Result 2691 states and 4204 transitions. [2023-11-22 22:42:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:42:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 777 [2023-11-22 22:42:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:28,183 INFO L225 Difference]: With dead ends: 2691 [2023-11-22 22:42:28,183 INFO L226 Difference]: Without dead ends: 1582 [2023-11-22 22:42:28,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:28,184 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1157 mSDsluCounter, 1867 mSDsCounter, 0 mSdLazyCounter, 2102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:28,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 2713 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2102 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-22 22:42:28,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1582 states. [2023-11-22 22:42:28,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1582 to 1456. [2023-11-22 22:42:28,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1422 states have (on average 1.5724331926863573) internal successors, (2236), 1422 states have internal predecessors, (2236), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:28,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2300 transitions. [2023-11-22 22:42:28,286 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2300 transitions. Word has length 777 [2023-11-22 22:42:28,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:28,287 INFO L495 AbstractCegarLoop]: Abstraction has 1456 states and 2300 transitions. [2023-11-22 22:42:28,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:28,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2300 transitions. [2023-11-22 22:42:28,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2023-11-22 22:42:28,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:28,292 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:28,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:28,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:28,505 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:28,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:28,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1070523387, now seen corresponding path program 1 times [2023-11-22 22:42:28,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:28,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129112125] [2023-11-22 22:42:28,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:28,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 687 [2023-11-22 22:42:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 701 [2023-11-22 22:42:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-22 22:42:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-22 22:42:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-22 22:42:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:29,325 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-22 22:42:29,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129112125] [2023-11-22 22:42:29,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129112125] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:29,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589222982] [2023-11-22 22:42:29,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:29,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:29,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:29,327 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:29,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-22 22:42:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:30,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 4181 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:30,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 195 proven. 14 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-22 22:42:30,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:30,568 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2023-11-22 22:42:30,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589222982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:30,569 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:30,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:30,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467727772] [2023-11-22 22:42:30,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:30,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:30,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:30,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:30,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:30,571 INFO L87 Difference]: Start difference. First operand 1456 states and 2300 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:30,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:30,823 INFO L93 Difference]: Finished difference Result 2214 states and 3489 transitions. [2023-11-22 22:42:30,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:30,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 777 [2023-11-22 22:42:30,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:30,826 INFO L225 Difference]: With dead ends: 2214 [2023-11-22 22:42:30,826 INFO L226 Difference]: Without dead ends: 1459 [2023-11-22 22:42:30,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1577 GetRequests, 1569 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:30,827 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 8 mSDsluCounter, 9717 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 11109 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:30,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 11109 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:30,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1459 states. [2023-11-22 22:42:30,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1459 to 1459. [2023-11-22 22:42:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1459 states, 1425 states have (on average 1.5712280701754386) internal successors, (2239), 1425 states have internal predecessors, (2239), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:30,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1459 states to 1459 states and 2303 transitions. [2023-11-22 22:42:30,930 INFO L78 Accepts]: Start accepts. Automaton has 1459 states and 2303 transitions. Word has length 777 [2023-11-22 22:42:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:30,930 INFO L495 AbstractCegarLoop]: Abstraction has 1459 states and 2303 transitions. [2023-11-22 22:42:30,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:30,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1459 states and 2303 transitions. [2023-11-22 22:42:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-22 22:42:30,935 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:30,936 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:30,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:31,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2023-11-22 22:42:31,156 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:31,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1121846621, now seen corresponding path program 2 times [2023-11-22 22:42:31,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:31,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763659994] [2023-11-22 22:42:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:31,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-22 22:42:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-22 22:42:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:42:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-22 22:42:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-22 22:42:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-22 22:42:31,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763659994] [2023-11-22 22:42:31,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763659994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:31,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487849127] [2023-11-22 22:42:31,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:31,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:31,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:31,871 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:31,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-22 22:42:32,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-22 22:42:32,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:32,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-22 22:42:32,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2023-11-22 22:42:32,741 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:32,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487849127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:32,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:32,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4] total 9 [2023-11-22 22:42:32,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122235997] [2023-11-22 22:42:32,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:32,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:42:32,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:32,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:42:32,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:32,743 INFO L87 Difference]: Start difference. First operand 1459 states and 2303 transitions. Second operand has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:42:33,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:33,249 INFO L93 Difference]: Finished difference Result 3724 states and 5852 transitions. [2023-11-22 22:42:33,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 22:42:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 780 [2023-11-22 22:42:33,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:33,253 INFO L225 Difference]: With dead ends: 3724 [2023-11-22 22:42:33,253 INFO L226 Difference]: Without dead ends: 2966 [2023-11-22 22:42:33,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 799 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:42:33,254 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 4004 mSDsluCounter, 7644 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4004 SdHoareTripleChecker+Valid, 9284 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:33,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4004 Valid, 9284 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:33,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2966 states. [2023-11-22 22:42:33,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2966 to 1460. [2023-11-22 22:42:33,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 1426 states have (on average 1.5715287517531558) internal successors, (2241), 1426 states have internal predecessors, (2241), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2305 transitions. [2023-11-22 22:42:33,364 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2305 transitions. Word has length 780 [2023-11-22 22:42:33,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:33,365 INFO L495 AbstractCegarLoop]: Abstraction has 1460 states and 2305 transitions. [2023-11-22 22:42:33,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 89.28571428571429) internal successors, (625), 7 states have internal predecessors, (625), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-22 22:42:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2305 transitions. [2023-11-22 22:42:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2023-11-22 22:42:33,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:33,370 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:33,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:33,579 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:33,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1514873631, now seen corresponding path program 1 times [2023-11-22 22:42:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:33,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009794708] [2023-11-22 22:42:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:33,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 690 [2023-11-22 22:42:34,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 704 [2023-11-22 22:42:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:42:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-22 22:42:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-22 22:42:34,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-22 22:42:34,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009794708] [2023-11-22 22:42:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009794708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208343632] [2023-11-22 22:42:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:34,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:34,328 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:34,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-22 22:42:35,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:35,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 4203 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:35,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:35,560 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 195 proven. 14 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2023-11-22 22:42:35,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:35,610 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2023-11-22 22:42:35,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208343632] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:35,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:35,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:35,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962262210] [2023-11-22 22:42:35,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:35,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:35,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:35,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:35,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:35,613 INFO L87 Difference]: Start difference. First operand 1460 states and 2305 transitions. Second operand has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:35,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:35,872 INFO L93 Difference]: Finished difference Result 2224 states and 3501 transitions. [2023-11-22 22:42:35,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:35,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 780 [2023-11-22 22:42:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:35,875 INFO L225 Difference]: With dead ends: 2224 [2023-11-22 22:42:35,875 INFO L226 Difference]: Without dead ends: 1463 [2023-11-22 22:42:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1583 GetRequests, 1575 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:35,876 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 8 mSDsluCounter, 5550 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6942 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:35,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6942 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:35,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-22 22:42:35,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2023-11-22 22:42:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1429 states have (on average 1.5703289013296011) internal successors, (2244), 1429 states have internal predecessors, (2244), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2308 transitions. [2023-11-22 22:42:35,987 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2308 transitions. Word has length 780 [2023-11-22 22:42:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:35,987 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2308 transitions. [2023-11-22 22:42:35,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.33333333333333) internal successors, (714), 9 states have internal predecessors, (714), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2308 transitions. [2023-11-22 22:42:35,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 784 [2023-11-22 22:42:35,992 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:35,993 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:36,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:36,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:36,213 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:36,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:36,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1092963264, now seen corresponding path program 2 times [2023-11-22 22:42:36,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:36,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831229438] [2023-11-22 22:42:36,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:36,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:36,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:36,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:36,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 693 [2023-11-22 22:42:36,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-22 22:42:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-22 22:42:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-22 22:42:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-11-22 22:42:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:36,978 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-22 22:42:36,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831229438] [2023-11-22 22:42:36,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831229438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:36,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684512192] [2023-11-22 22:42:36,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:36,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:36,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:36,980 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:36,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2023-11-22 22:42:38,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:42:38,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:38,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 4224 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-22 22:42:38,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:39,288 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2023-11-22 22:42:39,288 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:39,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684512192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:39,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:39,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-22 22:42:39,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433713745] [2023-11-22 22:42:39,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:39,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 22:42:39,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:39,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 22:42:39,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:42:39,291 INFO L87 Difference]: Start difference. First operand 1463 states and 2308 transitions. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:39,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:39,565 INFO L93 Difference]: Finished difference Result 2227 states and 3501 transitions. [2023-11-22 22:42:39,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:39,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 783 [2023-11-22 22:42:39,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:39,567 INFO L225 Difference]: With dead ends: 2227 [2023-11-22 22:42:39,567 INFO L226 Difference]: Without dead ends: 1463 [2023-11-22 22:42:39,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 807 GetRequests, 802 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:42:39,568 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 897 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:39,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 2584 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:42:39,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-22 22:42:39,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2023-11-22 22:42:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1429 states have (on average 1.5689293212036388) internal successors, (2242), 1429 states have internal predecessors, (2242), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2306 transitions. [2023-11-22 22:42:39,680 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2306 transitions. Word has length 783 [2023-11-22 22:42:39,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:39,681 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2306 transitions. [2023-11-22 22:42:39,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:39,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2306 transitions. [2023-11-22 22:42:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2023-11-22 22:42:39,686 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:39,686 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:39,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2023-11-22 22:42:39,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2023-11-22 22:42:39,893 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:39,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:39,894 INFO L85 PathProgramCache]: Analyzing trace with hash 792853397, now seen corresponding path program 1 times [2023-11-22 22:42:39,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:39,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590873908] [2023-11-22 22:42:39,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:39,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-11-22 22:42:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 708 [2023-11-22 22:42:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-22 22:42:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 739 [2023-11-22 22:42:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-22 22:42:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:40,795 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2023-11-22 22:42:40,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590873908] [2023-11-22 22:42:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590873908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:40,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:42:40,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 22:42:40,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647131821] [2023-11-22 22:42:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:40,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 22:42:40,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:40,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 22:42:40,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-22 22:42:40,797 INFO L87 Difference]: Start difference. First operand 1463 states and 2306 transitions. Second operand has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:41,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:41,061 INFO L93 Difference]: Finished difference Result 2227 states and 3497 transitions. [2023-11-22 22:42:41,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 22:42:41,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 784 [2023-11-22 22:42:41,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:41,063 INFO L225 Difference]: With dead ends: 2227 [2023-11-22 22:42:41,063 INFO L226 Difference]: Without dead ends: 1463 [2023-11-22 22:42:41,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:42:41,064 INFO L413 NwaCegarLoop]: 1291 mSDtfsCounter, 2272 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 2584 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:41,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2277 Valid, 2584 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:41,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1463 states. [2023-11-22 22:42:41,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1463 to 1463. [2023-11-22 22:42:41,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1463 states, 1429 states have (on average 1.5682295311406578) internal successors, (2241), 1429 states have internal predecessors, (2241), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:41,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1463 states to 1463 states and 2305 transitions. [2023-11-22 22:42:41,193 INFO L78 Accepts]: Start accepts. Automaton has 1463 states and 2305 transitions. Word has length 784 [2023-11-22 22:42:41,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:41,193 INFO L495 AbstractCegarLoop]: Abstraction has 1463 states and 2305 transitions. [2023-11-22 22:42:41,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:42:41,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1463 states and 2305 transitions. [2023-11-22 22:42:41,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2023-11-22 22:42:41,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:41,199 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:41,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-11-22 22:42:41,199 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:41,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:41,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1593531768, now seen corresponding path program 1 times [2023-11-22 22:42:41,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:41,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831058776] [2023-11-22 22:42:41,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:41,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:41,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 695 [2023-11-22 22:42:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2023-11-22 22:42:41,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-22 22:42:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 740 [2023-11-22 22:42:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 750 [2023-11-22 22:42:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:41,999 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-22 22:42:41,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:41,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831058776] [2023-11-22 22:42:41,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831058776] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:41,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322330051] [2023-11-22 22:42:41,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:42,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:42,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:42,001 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:42,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2023-11-22 22:42:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:43,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 4230 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:43,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:43,101 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 195 proven. 14 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2023-11-22 22:42:43,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2023-11-22 22:42:43,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322330051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:43,133 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:43,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:43,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168878247] [2023-11-22 22:42:43,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:43,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:43,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:43,135 INFO L87 Difference]: Start difference. First operand 1463 states and 2305 transitions. Second operand has 9 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:43,367 INFO L93 Difference]: Finished difference Result 2230 states and 3501 transitions. [2023-11-22 22:42:43,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:43,368 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 785 [2023-11-22 22:42:43,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:43,370 INFO L225 Difference]: With dead ends: 2230 [2023-11-22 22:42:43,370 INFO L226 Difference]: Without dead ends: 1466 [2023-11-22 22:42:43,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1593 GetRequests, 1585 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:43,371 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 6924 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:43,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8313 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:43,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2023-11-22 22:42:43,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1466. [2023-11-22 22:42:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1466 states, 1432 states have (on average 1.5670391061452513) internal successors, (2244), 1432 states have internal predecessors, (2244), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:43,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1466 states to 1466 states and 2308 transitions. [2023-11-22 22:42:43,518 INFO L78 Accepts]: Start accepts. Automaton has 1466 states and 2308 transitions. Word has length 785 [2023-11-22 22:42:43,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:43,519 INFO L495 AbstractCegarLoop]: Abstraction has 1466 states and 2308 transitions. [2023-11-22 22:42:43,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:43,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1466 states and 2308 transitions. [2023-11-22 22:42:43,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2023-11-22 22:42:43,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:43,525 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:43,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2023-11-22 22:42:43,727 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:43,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:43,727 INFO L85 PathProgramCache]: Analyzing trace with hash -2015880192, now seen corresponding path program 2 times [2023-11-22 22:42:43,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:43,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043513185] [2023-11-22 22:42:43,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:43,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:43,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2023-11-22 22:42:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2023-11-22 22:42:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2023-11-22 22:42:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-11-22 22:42:44,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2023-11-22 22:42:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 698 [2023-11-22 22:42:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-22 22:42:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 729 [2023-11-22 22:42:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-22 22:42:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-22 22:42:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:44,456 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 95 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-22 22:42:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043513185] [2023-11-22 22:42:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043513185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278274006] [2023-11-22 22:42:44,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:44,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:44,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:44,457 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:44,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2023-11-22 22:42:45,756 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:42:45,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:45,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 4251 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 22:42:45,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:45,837 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-22 22:42:45,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:45,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278274006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:45,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:45,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 10 [2023-11-22 22:42:45,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526603338] [2023-11-22 22:42:45,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:42:45,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:45,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:42:45,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:45,839 INFO L87 Difference]: Start difference. First operand 1466 states and 2308 transitions. Second operand has 8 states, 7 states have (on average 100.0) internal successors, (700), 8 states have internal predecessors, (700), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 22:42:46,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:46,286 INFO L93 Difference]: Finished difference Result 3368 states and 5262 transitions. [2023-11-22 22:42:46,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:46,287 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 100.0) internal successors, (700), 8 states have internal predecessors, (700), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 788 [2023-11-22 22:42:46,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:46,289 INFO L225 Difference]: With dead ends: 3368 [2023-11-22 22:42:46,289 INFO L226 Difference]: Without dead ends: 2378 [2023-11-22 22:42:46,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 803 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:42:46,312 INFO L413 NwaCegarLoop]: 1470 mSDtfsCounter, 808 mSDsluCounter, 7313 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 8783 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:46,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 8783 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:42:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2023-11-22 22:42:46,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1634. [2023-11-22 22:42:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1634 states, 1600 states have (on average 1.54125) internal successors, (2466), 1600 states have internal predecessors, (2466), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2530 transitions. [2023-11-22 22:42:46,470 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2530 transitions. Word has length 788 [2023-11-22 22:42:46,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:46,470 INFO L495 AbstractCegarLoop]: Abstraction has 1634 states and 2530 transitions. [2023-11-22 22:42:46,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 100.0) internal successors, (700), 8 states have internal predecessors, (700), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 22:42:46,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2530 transitions. [2023-11-22 22:42:46,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2023-11-22 22:42:46,479 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:46,479 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:46,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:46,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2023-11-22 22:42:46,713 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:46,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:46,713 INFO L85 PathProgramCache]: Analyzing trace with hash -132296586, now seen corresponding path program 1 times [2023-11-22 22:42:46,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:46,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330184254] [2023-11-22 22:42:46,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:46,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:42:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:42:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:42:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:42:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-22 22:42:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 700 [2023-11-22 22:42:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-22 22:42:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-22 22:42:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-22 22:42:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 755 [2023-11-22 22:42:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:47,491 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-22 22:42:47,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330184254] [2023-11-22 22:42:47,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330184254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:47,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519090390] [2023-11-22 22:42:47,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:47,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:47,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:47,515 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:47,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2023-11-22 22:42:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:48,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 4259 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:48,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-22 22:42:48,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2023-11-22 22:42:48,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519090390] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:48,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:48,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:48,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639148343] [2023-11-22 22:42:48,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:48,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:48,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:48,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:48,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:48,769 INFO L87 Difference]: Start difference. First operand 1634 states and 2530 transitions. Second operand has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:49,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:49,012 INFO L93 Difference]: Finished difference Result 2488 states and 3840 transitions. [2023-11-22 22:42:49,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:49,013 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 790 [2023-11-22 22:42:49,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:49,015 INFO L225 Difference]: With dead ends: 2488 [2023-11-22 22:42:49,015 INFO L226 Difference]: Without dead ends: 1637 [2023-11-22 22:42:49,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1603 GetRequests, 1595 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:49,016 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 6924 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8313 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:49,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8313 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:49,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2023-11-22 22:42:49,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1637. [2023-11-22 22:42:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1637 states, 1603 states have (on average 1.5402370555208984) internal successors, (2469), 1603 states have internal predecessors, (2469), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:49,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2533 transitions. [2023-11-22 22:42:49,144 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2533 transitions. Word has length 790 [2023-11-22 22:42:49,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:49,145 INFO L495 AbstractCegarLoop]: Abstraction has 1637 states and 2533 transitions. [2023-11-22 22:42:49,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:49,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2533 transitions. [2023-11-22 22:42:49,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2023-11-22 22:42:49,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:49,151 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:49,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2023-11-22 22:42:49,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2023-11-22 22:42:49,356 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:49,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:49,357 INFO L85 PathProgramCache]: Analyzing trace with hash 750271015, now seen corresponding path program 2 times [2023-11-22 22:42:49,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:49,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232230888] [2023-11-22 22:42:49,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:49,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:42:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:42:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:42:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:42:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-22 22:42:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 703 [2023-11-22 22:42:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-22 22:42:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-22 22:42:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-11-22 22:42:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2023-11-22 22:42:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:50,144 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-22 22:42:50,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232230888] [2023-11-22 22:42:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232230888] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:50,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926778256] [2023-11-22 22:42:50,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:50,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:50,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:50,146 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:50,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2023-11-22 22:42:51,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:42:51,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:51,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 4280 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:51,423 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:51,446 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 196 proven. 14 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-22 22:42:51,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:51,478 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-22 22:42:51,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926778256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:51,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:51,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:51,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424501434] [2023-11-22 22:42:51,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:51,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:51,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:51,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:51,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:51,481 INFO L87 Difference]: Start difference. First operand 1637 states and 2533 transitions. Second operand has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:51,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:51,739 INFO L93 Difference]: Finished difference Result 2494 states and 3846 transitions. [2023-11-22 22:42:51,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:51,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 793 [2023-11-22 22:42:51,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:51,742 INFO L225 Difference]: With dead ends: 2494 [2023-11-22 22:42:51,743 INFO L226 Difference]: Without dead ends: 1640 [2023-11-22 22:42:51,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1609 GetRequests, 1601 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:51,744 INFO L413 NwaCegarLoop]: 1389 mSDtfsCounter, 8 mSDsluCounter, 8310 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 9699 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:51,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 9699 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-11-22 22:42:51,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1640. [2023-11-22 22:42:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1640 states, 1606 states have (on average 1.5392278953922789) internal successors, (2472), 1606 states have internal predecessors, (2472), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2536 transitions. [2023-11-22 22:42:51,874 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2536 transitions. Word has length 793 [2023-11-22 22:42:51,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:51,874 INFO L495 AbstractCegarLoop]: Abstraction has 1640 states and 2536 transitions. [2023-11-22 22:42:51,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:51,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2536 transitions. [2023-11-22 22:42:51,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2023-11-22 22:42:51,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:51,880 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:51,896 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:52,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2023-11-22 22:42:52,081 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2051164189, now seen corresponding path program 3 times [2023-11-22 22:42:52,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:52,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483538820] [2023-11-22 22:42:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:52,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:42:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:42:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:42:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:42:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2023-11-22 22:42:52,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2023-11-22 22:42:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-22 22:42:52,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2023-11-22 22:42:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2023-11-22 22:42:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 761 [2023-11-22 22:42:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:52,875 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 96 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-22 22:42:52,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:52,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483538820] [2023-11-22 22:42:52,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483538820] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:52,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263584414] [2023-11-22 22:42:52,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 22:42:52,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:52,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:52,877 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:52,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2023-11-22 22:42:54,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 22:42:54,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:42:54,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 3554 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-22 22:42:54,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked. [2023-11-22 22:42:54,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:42:54,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263584414] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:42:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:42:54,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4] total 11 [2023-11-22 22:42:54,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937678461] [2023-11-22 22:42:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:42:54,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:54,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-22 22:42:54,152 INFO L87 Difference]: Start difference. First operand 1640 states and 2536 transitions. Second operand has 9 states, 8 states have (on average 81.875) internal successors, (655), 9 states have internal predecessors, (655), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:42:55,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:55,758 INFO L93 Difference]: Finished difference Result 2826 states and 4355 transitions. [2023-11-22 22:42:55,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:42:55,758 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 81.875) internal successors, (655), 9 states have internal predecessors, (655), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 796 [2023-11-22 22:42:55,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:55,760 INFO L225 Difference]: With dead ends: 2826 [2023-11-22 22:42:55,760 INFO L226 Difference]: Without dead ends: 1676 [2023-11-22 22:42:55,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 822 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-22 22:42:55,761 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 1390 mSDsluCounter, 5044 mSDsCounter, 0 mSdLazyCounter, 3947 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1395 SdHoareTripleChecker+Valid, 5888 SdHoareTripleChecker+Invalid, 3949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3947 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:55,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1395 Valid, 5888 Invalid, 3949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3947 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-22 22:42:55,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2023-11-22 22:42:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 1664. [2023-11-22 22:42:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1630 states have (on average 1.5300613496932516) internal successors, (2494), 1630 states have internal predecessors, (2494), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:55,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2558 transitions. [2023-11-22 22:42:55,907 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2558 transitions. Word has length 796 [2023-11-22 22:42:55,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:55,907 INFO L495 AbstractCegarLoop]: Abstraction has 1664 states and 2558 transitions. [2023-11-22 22:42:55,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 81.875) internal successors, (655), 9 states have internal predecessors, (655), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:42:55,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2558 transitions. [2023-11-22 22:42:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 799 [2023-11-22 22:42:55,913 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:55,928 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:55,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:56,157 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:56,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1952340173, now seen corresponding path program 1 times [2023-11-22 22:42:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:56,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386036517] [2023-11-22 22:42:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:42:56,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:42:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:42:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:42:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:42:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 707 [2023-11-22 22:42:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:42:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 738 [2023-11-22 22:42:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 752 [2023-11-22 22:42:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 763 [2023-11-22 22:42:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-22 22:42:56,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386036517] [2023-11-22 22:42:56,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386036517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:56,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640678391] [2023-11-22 22:42:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:56,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:56,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:56,972 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:56,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2023-11-22 22:42:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:58,269 INFO L262 TraceCheckSpWp]: Trace formula consists of 4307 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:42:58,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:42:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 197 proven. 14 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2023-11-22 22:42:58,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:42:58,330 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2023-11-22 22:42:58,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640678391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:42:58,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:42:58,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:42:58,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583434485] [2023-11-22 22:42:58,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:42:58,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:42:58,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:42:58,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:42:58,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:42:58,335 INFO L87 Difference]: Start difference. First operand 1664 states and 2558 transitions. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:58,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:42:58,580 INFO L93 Difference]: Finished difference Result 2536 states and 3885 transitions. [2023-11-22 22:42:58,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:42:58,581 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 798 [2023-11-22 22:42:58,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:42:58,583 INFO L225 Difference]: With dead ends: 2536 [2023-11-22 22:42:58,583 INFO L226 Difference]: Without dead ends: 1667 [2023-11-22 22:42:58,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1619 GetRequests, 1611 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:42:58,584 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 8 mSDsluCounter, 6919 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8307 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:42:58,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8307 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:42:58,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1667 states. [2023-11-22 22:42:58,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1667 to 1667. [2023-11-22 22:42:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1633 states have (on average 1.5290875688916106) internal successors, (2497), 1633 states have internal predecessors, (2497), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:42:58,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2561 transitions. [2023-11-22 22:42:58,720 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2561 transitions. Word has length 798 [2023-11-22 22:42:58,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:42:58,720 INFO L495 AbstractCegarLoop]: Abstraction has 1667 states and 2561 transitions. [2023-11-22 22:42:58,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:42:58,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2561 transitions. [2023-11-22 22:42:58,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2023-11-22 22:42:58,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:42:58,727 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:42:58,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2023-11-22 22:42:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:58,945 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:42:58,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:42:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash -106140265, now seen corresponding path program 2 times [2023-11-22 22:42:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:42:58,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89472377] [2023-11-22 22:42:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:42:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:42:59,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:42:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:42:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:42:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:42:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 710 [2023-11-22 22:42:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 724 [2023-11-22 22:42:59,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2023-11-22 22:42:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 755 [2023-11-22 22:42:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 766 [2023-11-22 22:42:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:42:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-22 22:42:59,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:42:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89472377] [2023-11-22 22:42:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89472377] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:42:59,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70391352] [2023-11-22 22:42:59,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:42:59,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:42:59,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:42:59,768 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:42:59,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2023-11-22 22:43:01,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:43:01,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:01,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 4328 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:43:01,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:01,192 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 197 proven. 6 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2023-11-22 22:43:01,192 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:01,221 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2023-11-22 22:43:01,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [70391352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:01,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:01,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:43:01,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069663176] [2023-11-22 22:43:01,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:01,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:43:01,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:43:01,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:01,224 INFO L87 Difference]: Start difference. First operand 1667 states and 2561 transitions. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:01,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:01,466 INFO L93 Difference]: Finished difference Result 2543 states and 3892 transitions. [2023-11-22 22:43:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:01,467 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 801 [2023-11-22 22:43:01,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:01,469 INFO L225 Difference]: With dead ends: 2543 [2023-11-22 22:43:01,469 INFO L226 Difference]: Without dead ends: 1671 [2023-11-22 22:43:01,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1624 GetRequests, 1617 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:01,470 INFO L413 NwaCegarLoop]: 1388 mSDtfsCounter, 8 mSDsluCounter, 6917 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8305 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:01,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8305 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:43:01,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1671 states. [2023-11-22 22:43:01,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1671 to 1668. [2023-11-22 22:43:01,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1634 states have (on average 1.5287637698898409) internal successors, (2498), 1634 states have internal predecessors, (2498), 32 states have call successors, (32), 1 states have call predecessors, (32), 1 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2023-11-22 22:43:01,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2562 transitions. [2023-11-22 22:43:01,609 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2562 transitions. Word has length 801 [2023-11-22 22:43:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:01,610 INFO L495 AbstractCegarLoop]: Abstraction has 1668 states and 2562 transitions. [2023-11-22 22:43:01,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:01,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2562 transitions. [2023-11-22 22:43:01,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2023-11-22 22:43:01,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:01,616 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:01,644 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2023-11-22 22:43:01,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:01,833 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:01,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:01,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1786781020, now seen corresponding path program 3 times [2023-11-22 22:43:01,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:01,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924683296] [2023-11-22 22:43:01,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:01,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:43:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:43:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:43:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:43:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2023-11-22 22:43:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 725 [2023-11-22 22:43:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 742 [2023-11-22 22:43:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 756 [2023-11-22 22:43:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-22 22:43:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:02,699 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-22 22:43:02,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924683296] [2023-11-22 22:43:02,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924683296] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:02,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112748373] [2023-11-22 22:43:02,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-22 22:43:02,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:02,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:02,701 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:43:02,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2023-11-22 22:43:03,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-22 22:43:03,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:04,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 3557 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-22 22:43:04,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:05,230 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 65 proven. 8 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-22 22:43:05,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-22 22:43:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112748373] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:05,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:05,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 18 [2023-11-22 22:43:05,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321765877] [2023-11-22 22:43:05,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:05,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-22 22:43:05,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:05,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-22 22:43:05,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-22 22:43:05,784 INFO L87 Difference]: Start difference. First operand 1668 states and 2562 transitions. Second operand has 18 states, 18 states have (on average 95.33333333333333) internal successors, (1716), 18 states have internal predecessors, (1716), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-22 22:43:07,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:07,987 INFO L93 Difference]: Finished difference Result 2620 states and 4004 transitions. [2023-11-22 22:43:07,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-22 22:43:07,988 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 95.33333333333333) internal successors, (1716), 18 states have internal predecessors, (1716), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 802 [2023-11-22 22:43:07,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:07,990 INFO L225 Difference]: With dead ends: 2620 [2023-11-22 22:43:07,990 INFO L226 Difference]: Without dead ends: 1521 [2023-11-22 22:43:07,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1638 GetRequests, 1612 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2023-11-22 22:43:07,991 INFO L413 NwaCegarLoop]: 901 mSDtfsCounter, 3219 mSDsluCounter, 6736 mSDsCounter, 0 mSdLazyCounter, 5994 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3223 SdHoareTripleChecker+Valid, 7637 SdHoareTripleChecker+Invalid, 6008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 5994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:07,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3223 Valid, 7637 Invalid, 6008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 5994 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-22 22:43:07,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2023-11-22 22:43:08,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1487. [2023-11-22 22:43:08,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1487 states, 1467 states have (on average 1.522154055896387) internal successors, (2233), 1467 states have internal predecessors, (2233), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 22:43:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1487 states to 1487 states and 2269 transitions. [2023-11-22 22:43:08,192 INFO L78 Accepts]: Start accepts. Automaton has 1487 states and 2269 transitions. Word has length 802 [2023-11-22 22:43:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:08,193 INFO L495 AbstractCegarLoop]: Abstraction has 1487 states and 2269 transitions. [2023-11-22 22:43:08,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 95.33333333333333) internal successors, (1716), 18 states have internal predecessors, (1716), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-22 22:43:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 1487 states and 2269 transitions. [2023-11-22 22:43:08,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 804 [2023-11-22 22:43:08,198 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:08,208 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:08,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2023-11-22 22:43:08,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:08,425 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:08,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:08,426 INFO L85 PathProgramCache]: Analyzing trace with hash -719291156, now seen corresponding path program 1 times [2023-11-22 22:43:08,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:08,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371410052] [2023-11-22 22:43:08,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:08,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:08,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:43:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:43:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:43:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:43:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 712 [2023-11-22 22:43:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 726 [2023-11-22 22:43:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 743 [2023-11-22 22:43:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 757 [2023-11-22 22:43:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 768 [2023-11-22 22:43:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-22 22:43:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:09,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371410052] [2023-11-22 22:43:09,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371410052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:09,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720311881] [2023-11-22 22:43:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:09,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:09,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:09,284 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:43:09,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2023-11-22 22:43:10,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:10,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 4344 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-22 22:43:10,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 197 proven. 22 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2023-11-22 22:43:10,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:10,757 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 97 proven. 3 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked. [2023-11-22 22:43:10,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720311881] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:10,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:10,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 5] total 12 [2023-11-22 22:43:10,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331943549] [2023-11-22 22:43:10,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:10,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-22 22:43:10,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-22 22:43:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:43:10,760 INFO L87 Difference]: Start difference. First operand 1487 states and 2269 transitions. Second operand has 12 states, 12 states have (on average 60.416666666666664) internal successors, (725), 12 states have internal predecessors, (725), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:11,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:11,017 INFO L93 Difference]: Finished difference Result 2272 states and 3452 transitions. [2023-11-22 22:43:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:11,017 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 60.416666666666664) internal successors, (725), 12 states have internal predecessors, (725), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 803 [2023-11-22 22:43:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:11,019 INFO L225 Difference]: With dead ends: 2272 [2023-11-22 22:43:11,019 INFO L226 Difference]: Without dead ends: 1489 [2023-11-22 22:43:11,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1629 GetRequests, 1619 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:43:11,020 INFO L413 NwaCegarLoop]: 1391 mSDtfsCounter, 11 mSDsluCounter, 9707 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 11098 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:11,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 11098 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:43:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2023-11-22 22:43:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1489. [2023-11-22 22:43:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 1469 states have (on average 1.5214431586113002) internal successors, (2235), 1469 states have internal predecessors, (2235), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 22:43:11,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 2271 transitions. [2023-11-22 22:43:11,143 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 2271 transitions. Word has length 803 [2023-11-22 22:43:11,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:11,144 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 2271 transitions. [2023-11-22 22:43:11,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 60.416666666666664) internal successors, (725), 12 states have internal predecessors, (725), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 2271 transitions. [2023-11-22 22:43:11,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2023-11-22 22:43:11,149 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:11,149 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:11,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2023-11-22 22:43:11,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2023-11-22 22:43:11,362 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:11,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash -993971476, now seen corresponding path program 2 times [2023-11-22 22:43:11,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:11,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455042597] [2023-11-22 22:43:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:11,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:43:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:43:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:43:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:43:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 714 [2023-11-22 22:43:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 728 [2023-11-22 22:43:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 745 [2023-11-22 22:43:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 759 [2023-11-22 22:43:12,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 770 [2023-11-22 22:43:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:12,154 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-22 22:43:12,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455042597] [2023-11-22 22:43:12,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455042597] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:12,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790023805] [2023-11-22 22:43:12,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-22 22:43:12,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:12,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:12,156 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:43:12,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2023-11-22 22:43:13,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-22 22:43:13,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-22 22:43:13,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 4358 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-22 22:43:13,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:13,574 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 197 proven. 14 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2023-11-22 22:43:13,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 22:43:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 97 proven. 1 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2023-11-22 22:43:13,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790023805] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-22 22:43:13,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-22 22:43:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 4] total 9 [2023-11-22 22:43:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135700604] [2023-11-22 22:43:13,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-22 22:43:13,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:43:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:13,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:43:13,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:13,608 INFO L87 Difference]: Start difference. First operand 1489 states and 2271 transitions. Second operand has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:13,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:13,846 INFO L93 Difference]: Finished difference Result 2277 states and 3458 transitions. [2023-11-22 22:43:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 22:43:13,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 805 [2023-11-22 22:43:13,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:13,849 INFO L225 Difference]: With dead ends: 2277 [2023-11-22 22:43:13,849 INFO L226 Difference]: Without dead ends: 1492 [2023-11-22 22:43:13,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1633 GetRequests, 1625 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:43:13,850 INFO L413 NwaCegarLoop]: 1387 mSDtfsCounter, 8 mSDsluCounter, 6917 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 8304 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:13,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 8304 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:43:13,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2023-11-22 22:43:13,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 1492. [2023-11-22 22:43:13,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1492 states, 1472 states have (on average 1.5203804347826086) internal successors, (2238), 1472 states have internal predecessors, (2238), 18 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-22 22:43:13,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1492 states to 1492 states and 2274 transitions. [2023-11-22 22:43:13,975 INFO L78 Accepts]: Start accepts. Automaton has 1492 states and 2274 transitions. Word has length 805 [2023-11-22 22:43:13,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:13,976 INFO L495 AbstractCegarLoop]: Abstraction has 1492 states and 2274 transitions. [2023-11-22 22:43:13,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-22 22:43:13,976 INFO L276 IsEmpty]: Start isEmpty. Operand 1492 states and 2274 transitions. [2023-11-22 22:43:13,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2023-11-22 22:43:13,981 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:13,981 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:13,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2023-11-22 22:43:14,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2023-11-22 22:43:14,196 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:14,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:14,197 INFO L85 PathProgramCache]: Analyzing trace with hash -362397567, now seen corresponding path program 3 times [2023-11-22 22:43:14,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:14,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371836364] [2023-11-22 22:43:14,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:14,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:16,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:18,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:43:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:43:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:43:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:43:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2023-11-22 22:43:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 731 [2023-11-22 22:43:18,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2023-11-22 22:43:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 762 [2023-11-22 22:43:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 773 [2023-11-22 22:43:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:18,077 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-22 22:43:18,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:18,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371836364] [2023-11-22 22:43:18,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371836364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:18,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:18,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:43:18,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611032278] [2023-11-22 22:43:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:18,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:43:18,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:43:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:43:18,079 INFO L87 Difference]: Start difference. First operand 1492 states and 2274 transitions. Second operand has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:43:18,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:18,642 INFO L93 Difference]: Finished difference Result 4648 states and 7004 transitions. [2023-11-22 22:43:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:18,643 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 808 [2023-11-22 22:43:18,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:18,647 INFO L225 Difference]: With dead ends: 4648 [2023-11-22 22:43:18,647 INFO L226 Difference]: Without dead ends: 3860 [2023-11-22 22:43:18,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:43:18,649 INFO L413 NwaCegarLoop]: 2038 mSDtfsCounter, 3346 mSDsluCounter, 6797 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 8835 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:18,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 8835 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:43:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2023-11-22 22:43:18,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 2448. [2023-11-22 22:43:18,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2448 states, 2410 states have (on average 1.5029045643153527) internal successors, (3622), 2410 states have internal predecessors, (3622), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:18,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2448 states to 2448 states and 3694 transitions. [2023-11-22 22:43:18,858 INFO L78 Accepts]: Start accepts. Automaton has 2448 states and 3694 transitions. Word has length 808 [2023-11-22 22:43:18,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:18,858 INFO L495 AbstractCegarLoop]: Abstraction has 2448 states and 3694 transitions. [2023-11-22 22:43:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.83333333333333) internal successors, (707), 6 states have internal predecessors, (707), 2 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-22 22:43:18,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2448 states and 3694 transitions. [2023-11-22 22:43:18,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 810 [2023-11-22 22:43:18,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:18,865 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:18,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-11-22 22:43:18,865 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:18,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:18,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1055252924, now seen corresponding path program 1 times [2023-11-22 22:43:18,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:18,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583936100] [2023-11-22 22:43:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:18,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2023-11-22 22:43:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2023-11-22 22:43:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-11-22 22:43:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2023-11-22 22:43:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 718 [2023-11-22 22:43:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 732 [2023-11-22 22:43:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 749 [2023-11-22 22:43:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 763 [2023-11-22 22:43:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 774 [2023-11-22 22:43:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2023-11-22 22:43:23,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:23,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583936100] [2023-11-22 22:43:23,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583936100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:23,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:23,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-22 22:43:23,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665061372] [2023-11-22 22:43:23,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:23,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-22 22:43:23,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:23,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-22 22:43:23,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-22 22:43:23,903 INFO L87 Difference]: Start difference. First operand 2448 states and 3694 transitions. Second operand has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:43:26,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:26,943 INFO L93 Difference]: Finished difference Result 7480 states and 11305 transitions. [2023-11-22 22:43:26,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-22 22:43:26,956 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 809 [2023-11-22 22:43:26,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:26,963 INFO L225 Difference]: With dead ends: 7480 [2023-11-22 22:43:26,968 INFO L226 Difference]: Without dead ends: 5838 [2023-11-22 22:43:26,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:43:26,970 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 3795 mSDsluCounter, 8232 mSDsCounter, 0 mSdLazyCounter, 5060 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3804 SdHoareTripleChecker+Valid, 9738 SdHoareTripleChecker+Invalid, 5069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 5060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:26,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3804 Valid, 9738 Invalid, 5069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 5060 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-22 22:43:26,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5838 states. [2023-11-22 22:43:27,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5838 to 2544. [2023-11-22 22:43:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2544 states, 2506 states have (on average 1.4980047885075818) internal successors, (3754), 2506 states have internal predecessors, (3754), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:27,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 3826 transitions. [2023-11-22 22:43:27,263 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 3826 transitions. Word has length 809 [2023-11-22 22:43:27,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:27,264 INFO L495 AbstractCegarLoop]: Abstraction has 2544 states and 3826 transitions. [2023-11-22 22:43:27,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 73.0) internal successors, (657), 9 states have internal predecessors, (657), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:43:27,264 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 3826 transitions. [2023-11-22 22:43:27,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 812 [2023-11-22 22:43:27,270 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:27,270 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:27,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-11-22 22:43:27,270 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:27,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:27,271 INFO L85 PathProgramCache]: Analyzing trace with hash 877149570, now seen corresponding path program 1 times [2023-11-22 22:43:27,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:27,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537235128] [2023-11-22 22:43:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:27,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:43:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2023-11-22 22:43:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2023-11-22 22:43:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2023-11-22 22:43:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2023-11-22 22:43:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2023-11-22 22:43:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2023-11-22 22:43:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2023-11-22 22:43:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2023-11-22 22:43:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2023-11-22 22:43:31,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:31,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537235128] [2023-11-22 22:43:31,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537235128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:31,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:31,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:31,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696632385] [2023-11-22 22:43:31,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:31,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:31,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:31,508 INFO L87 Difference]: Start difference. First operand 2544 states and 3826 transitions. Second operand has 7 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 22:43:33,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:33,006 INFO L93 Difference]: Finished difference Result 4162 states and 6263 transitions. [2023-11-22 22:43:33,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:33,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 811 [2023-11-22 22:43:33,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:33,008 INFO L225 Difference]: With dead ends: 4162 [2023-11-22 22:43:33,009 INFO L226 Difference]: Without dead ends: 2560 [2023-11-22 22:43:33,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-22 22:43:33,010 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 2191 mSDsluCounter, 2013 mSDsCounter, 0 mSdLazyCounter, 2293 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 2895 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:33,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 2895 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2293 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-22 22:43:33,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2560 states. [2023-11-22 22:43:33,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2560 to 2552. [2023-11-22 22:43:33,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2514 states have (on average 1.4948289578361178) internal successors, (3758), 2514 states have internal predecessors, (3758), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3830 transitions. [2023-11-22 22:43:33,220 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3830 transitions. Word has length 811 [2023-11-22 22:43:33,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:33,221 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 3830 transitions. [2023-11-22 22:43:33,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 95.85714285714286) internal successors, (671), 7 states have internal predecessors, (671), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 22:43:33,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3830 transitions. [2023-11-22 22:43:33,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 814 [2023-11-22 22:43:33,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:33,227 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:33,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-11-22 22:43:33,227 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:33,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:33,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1112215276, now seen corresponding path program 1 times [2023-11-22 22:43:33,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:33,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734494085] [2023-11-22 22:43:33,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:33,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:35,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:43:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-22 22:43:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2023-11-22 22:43:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2023-11-22 22:43:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2023-11-22 22:43:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 735 [2023-11-22 22:43:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 753 [2023-11-22 22:43:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 767 [2023-11-22 22:43:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 778 [2023-11-22 22:43:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 436 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2023-11-22 22:43:37,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:37,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734494085] [2023-11-22 22:43:37,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734494085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:37,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:37,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:37,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601591673] [2023-11-22 22:43:37,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:37,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:37,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:37,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:37,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:37,577 INFO L87 Difference]: Start difference. First operand 2552 states and 3830 transitions. Second operand has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 22:43:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:38,473 INFO L93 Difference]: Finished difference Result 7318 states and 10991 transitions. [2023-11-22 22:43:38,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:43:38,474 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 813 [2023-11-22 22:43:38,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:38,479 INFO L225 Difference]: With dead ends: 7318 [2023-11-22 22:43:38,479 INFO L226 Difference]: Without dead ends: 5734 [2023-11-22 22:43:38,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:43:38,482 INFO L413 NwaCegarLoop]: 2200 mSDtfsCounter, 3540 mSDsluCounter, 7194 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3547 SdHoareTripleChecker+Valid, 9394 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:38,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3547 Valid, 9394 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 22:43:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5734 states. [2023-11-22 22:43:38,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5734 to 2572. [2023-11-22 22:43:38,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2572 states, 2534 states have (on average 1.4925019731649567) internal successors, (3782), 2534 states have internal predecessors, (3782), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:38,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2572 states to 2572 states and 3854 transitions. [2023-11-22 22:43:38,717 INFO L78 Accepts]: Start accepts. Automaton has 2572 states and 3854 transitions. Word has length 813 [2023-11-22 22:43:38,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:38,717 INFO L495 AbstractCegarLoop]: Abstraction has 2572 states and 3854 transitions. [2023-11-22 22:43:38,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.14285714285714) internal successors, (680), 7 states have internal predecessors, (680), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 22:43:38,718 INFO L276 IsEmpty]: Start isEmpty. Operand 2572 states and 3854 transitions. [2023-11-22 22:43:38,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-22 22:43:38,724 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:38,725 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:38,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-11-22 22:43:38,725 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:38,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:38,725 INFO L85 PathProgramCache]: Analyzing trace with hash -705634686, now seen corresponding path program 1 times [2023-11-22 22:43:38,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:38,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016697902] [2023-11-22 22:43:38,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:38,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:43:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-22 22:43:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-22 22:43:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-22 22:43:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:43:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-22 22:43:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-22 22:43:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-11-22 22:43:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2023-11-22 22:43:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:39,828 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2023-11-22 22:43:39,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:39,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016697902] [2023-11-22 22:43:39,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016697902] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:39,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:39,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-22 22:43:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611088721] [2023-11-22 22:43:39,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:39,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-22 22:43:39,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-22 22:43:39,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-22 22:43:39,831 INFO L87 Difference]: Start difference. First operand 2572 states and 3854 transitions. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 22:43:41,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:41,575 INFO L93 Difference]: Finished difference Result 5748 states and 8617 transitions. [2023-11-22 22:43:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 22:43:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 815 [2023-11-22 22:43:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:41,580 INFO L225 Difference]: With dead ends: 5748 [2023-11-22 22:43:41,580 INFO L226 Difference]: Without dead ends: 4166 [2023-11-22 22:43:41,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:43:41,583 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 2169 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 3607 SdHoareTripleChecker+Invalid, 2380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:41,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 3607 Invalid, 2380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-22 22:43:41,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4166 states. [2023-11-22 22:43:41,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4166 to 2580. [2023-11-22 22:43:41,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2542 states have (on average 1.4909520062942565) internal successors, (3790), 2542 states have internal predecessors, (3790), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:41,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3862 transitions. [2023-11-22 22:43:41,822 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3862 transitions. Word has length 815 [2023-11-22 22:43:41,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:41,822 INFO L495 AbstractCegarLoop]: Abstraction has 2580 states and 3862 transitions. [2023-11-22 22:43:41,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 states have internal predecessors, (684), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-22 22:43:41,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3862 transitions. [2023-11-22 22:43:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-22 22:43:41,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:41,829 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:41,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-11-22 22:43:41,830 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:41,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1381166910, now seen corresponding path program 1 times [2023-11-22 22:43:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688170989] [2023-11-22 22:43:41,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:41,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:43:47,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-22 22:43:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-22 22:43:47,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-22 22:43:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:43:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-22 22:43:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-22 22:43:47,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-11-22 22:43:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2023-11-22 22:43:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:47,851 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-22 22:43:47,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688170989] [2023-11-22 22:43:47,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688170989] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 22:43:47,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111698370] [2023-11-22 22:43:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:47,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:47,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 22:43:47,853 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-22 22:43:47,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2023-11-22 22:43:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:49,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 4405 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-22 22:43:49,339 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 22:43:49,917 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2023-11-22 22:43:49,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-22 22:43:49,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [111698370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:49,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-22 22:43:49,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-22 22:43:49,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725948999] [2023-11-22 22:43:49,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:49,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:43:49,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:49,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:43:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-22 22:43:49,920 INFO L87 Difference]: Start difference. First operand 2580 states and 3862 transitions. Second operand has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 22:43:51,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:51,623 INFO L93 Difference]: Finished difference Result 4216 states and 6311 transitions. [2023-11-22 22:43:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:43:51,624 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 815 [2023-11-22 22:43:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:51,626 INFO L225 Difference]: With dead ends: 4216 [2023-11-22 22:43:51,627 INFO L226 Difference]: Without dead ends: 2588 [2023-11-22 22:43:51,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 829 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2023-11-22 22:43:51,628 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 2772 mSDsluCounter, 3012 mSDsCounter, 0 mSdLazyCounter, 3361 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 3886 SdHoareTripleChecker+Invalid, 3372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:51,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2774 Valid, 3886 Invalid, 3372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 3361 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-22 22:43:51,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2588 states. [2023-11-22 22:43:51,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2588 to 2584. [2023-11-22 22:43:51,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2546 states have (on average 1.4901806755695208) internal successors, (3794), 2546 states have internal predecessors, (3794), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:51,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3866 transitions. [2023-11-22 22:43:51,865 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3866 transitions. Word has length 815 [2023-11-22 22:43:51,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:51,866 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3866 transitions. [2023-11-22 22:43:51,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 84.625) internal successors, (677), 8 states have internal predecessors, (677), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-22 22:43:51,866 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3866 transitions. [2023-11-22 22:43:51,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-22 22:43:51,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:51,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:51,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2023-11-22 22:43:52,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 22:43:52,088 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:52,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:52,089 INFO L85 PathProgramCache]: Analyzing trace with hash 272926338, now seen corresponding path program 1 times [2023-11-22 22:43:52,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:52,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761804559] [2023-11-22 22:43:52,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:52,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:43:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:43:57,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:43:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-22 22:43:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-22 22:43:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-22 22:43:57,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:43:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-22 22:43:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-22 22:43:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-11-22 22:43:57,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2023-11-22 22:43:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:43:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-11-22 22:43:57,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:43:57,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761804559] [2023-11-22 22:43:57,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761804559] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:43:57,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:43:57,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 22:43:57,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574041705] [2023-11-22 22:43:57,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:43:57,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 22:43:57,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:43:57,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 22:43:57,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-22 22:43:57,687 INFO L87 Difference]: Start difference. First operand 2584 states and 3866 transitions. Second operand has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:43:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:43:58,713 INFO L93 Difference]: Finished difference Result 7646 states and 11429 transitions. [2023-11-22 22:43:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-22 22:43:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 815 [2023-11-22 22:43:58,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:43:58,719 INFO L225 Difference]: With dead ends: 7646 [2023-11-22 22:43:58,719 INFO L226 Difference]: Without dead ends: 5934 [2023-11-22 22:43:58,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-11-22 22:43:58,721 INFO L413 NwaCegarLoop]: 2144 mSDtfsCounter, 3563 mSDsluCounter, 7740 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3572 SdHoareTripleChecker+Valid, 9884 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-22 22:43:58,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3572 Valid, 9884 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-22 22:43:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2023-11-22 22:43:58,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 2584. [2023-11-22 22:43:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 2546 states have (on average 1.485467399842891) internal successors, (3782), 2546 states have internal predecessors, (3782), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2023-11-22 22:43:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3854 transitions. [2023-11-22 22:43:58,972 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3854 transitions. Word has length 815 [2023-11-22 22:43:58,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:43:58,972 INFO L495 AbstractCegarLoop]: Abstraction has 2584 states and 3854 transitions. [2023-11-22 22:43:58,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 94.0) internal successors, (658), 7 states have internal predecessors, (658), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-22 22:43:58,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3854 transitions. [2023-11-22 22:43:58,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2023-11-22 22:43:58,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:43:58,979 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:58,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-11-22 22:43:58,980 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:43:58,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:43:58,980 INFO L85 PathProgramCache]: Analyzing trace with hash -417742526, now seen corresponding path program 1 times [2023-11-22 22:43:58,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:43:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716846701] [2023-11-22 22:43:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:43:58,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:44:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2023-11-22 22:44:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2023-11-22 22:44:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2023-11-22 22:44:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2023-11-22 22:44:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2023-11-22 22:44:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 721 [2023-11-22 22:44:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 736 [2023-11-22 22:44:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 754 [2023-11-22 22:44:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 769 [2023-11-22 22:44:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 780 [2023-11-22 22:44:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 22:44:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 437 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2023-11-22 22:44:02,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 22:44:02,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716846701] [2023-11-22 22:44:02,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716846701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 22:44:02,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 22:44:02,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 22:44:02,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424902494] [2023-11-22 22:44:02,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 22:44:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 22:44:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 22:44:02,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 22:44:02,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-22 22:44:02,898 INFO L87 Difference]: Start difference. First operand 2584 states and 3854 transitions. Second operand has 8 states, 8 states have (on average 89.25) internal successors, (714), 8 states have internal predecessors, (714), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 22:44:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 22:44:03,570 INFO L93 Difference]: Finished difference Result 6874 states and 10252 transitions. [2023-11-22 22:44:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 22:44:03,570 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 89.25) internal successors, (714), 8 states have internal predecessors, (714), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 815 [2023-11-22 22:44:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 22:44:03,576 INFO L225 Difference]: With dead ends: 6874 [2023-11-22 22:44:03,576 INFO L226 Difference]: Without dead ends: 5132 [2023-11-22 22:44:03,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2023-11-22 22:44:03,579 INFO L413 NwaCegarLoop]: 1574 mSDtfsCounter, 3545 mSDsluCounter, 7557 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3549 SdHoareTripleChecker+Valid, 9131 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-22 22:44:03,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3549 Valid, 9131 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-22 22:44:03,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5132 states. [2023-11-22 22:44:03,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5132 to 3656. [2023-11-22 22:44:03,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 3600 states have (on average 1.4791666666666667) internal successors, (5325), 3600 states have internal predecessors, (5325), 54 states have call successors, (54), 1 states have call predecessors, (54), 1 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2023-11-22 22:44:03,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 5433 transitions. [2023-11-22 22:44:03,940 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 5433 transitions. Word has length 815 [2023-11-22 22:44:03,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 22:44:03,940 INFO L495 AbstractCegarLoop]: Abstraction has 3656 states and 5433 transitions. [2023-11-22 22:44:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 89.25) internal successors, (714), 8 states have internal predecessors, (714), 3 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-22 22:44:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 5433 transitions. [2023-11-22 22:44:03,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 817 [2023-11-22 22:44:03,948 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 22:44:03,948 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:44:03,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-11-22 22:44:03,949 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 22:44:03,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 22:44:03,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1303320472, now seen corresponding path program 1 times [2023-11-22 22:44:03,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 22:44:03,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197609287] [2023-11-22 22:44:03,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 22:44:03,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 22:44:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15